DETERMINING SHORT BETWEEN CIRCUITS LOCATION (HS-CAN) [SKYACTIV-D 1.5]

• When disconnecting the connector, verify that there is no looseness, damage, deformation, corrosion, or poor connection of the connector terminals.

• When inspecting the DLC-2, touch it with a paper clip or similar thin pin without directly inserting a tester into the terminals.

• Disconnect the negative battery cable before performing any work that requires handling of connectors.

Step	Inspection	Action
1	INSPECT BETWEEN FRONT BODY CONTROL MODULE (FBCM) AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector 2 which has front body control module (FBCM) terminals 2P and 2N. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Go to Step 13.
No	Go to the next step.
2	INSPECT FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Inspect for continuity between front body control module (FBCM) terminals 2P and 2N. • Is there continuity?	Yes	Replace the front body control module (FBCM) because there is a short between circuits in the front body control module (FBCM). (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)
No	Go to the next step.
3	INSPECT BETWEEN DSC HU/CM AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between DSC HU/CM terminals AF and AC. • Is there continuity?	Yes	Go to the next step.
No	• Go to Step 5.(ATX) • Go to Step 6.(MTX)
4	INSPECT OR DSC HU/CM FOR SHORT BETWEEN CIRCUITS • Disconnect the DSC HU/CM connector. • Inspect for continuity between DSC HU/CM terminals AF and AC (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the DSC HU/CM and front body control module (FBCM) because the wiring harness is shorted between circuits.
No	Replace the DSC HU/CM because there is a short between circuits in the DSC HU/CM. (See DSC HU/CM REMOVAL/INSTALLATION.)
5	INSPECT BETWEEN CONNECTOR C-32 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector C-32. • Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-32 and front body control module (FBCM) because the wiring harness is shorted between circuits.
No	Go to Step 8.
6	INSPECT BETWEEN CONNECTOR C-01 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector C-01. • Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-01 and front body control module (FBCM) because the wiring harness is shorted between circuits.
No	Go to the next step.
7	INSPECT BETWEEN CONNECTOR C-32 AND CONNECTOR C-01 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector C-32. • Connect connector C-01. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-32 and connector C-01 because the wiring harness is shorted between circuits.
No	Go to the next step.
8	INSPECT BETWEEN AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between AFS control module / auto leveling control module terminals A and B. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 10.
9	INSPECT AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the AFS control module / auto leveling control module connector. • Inspect for continuity between AFS control module / auto leveling control module terminals A and B (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the AFS control module / auto leveling control module and connector C-32 because the wiring harness is shorted between circuits.
No	Replace the AFS control module / auto leveling control module because there is a short between circuits in the AFS control module / auto leveling control module. (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.) (See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)
10	INSPECT BETWEEN TCM AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between TCM terminals E and F. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between the front body control module (FBCM) and connector C-32 because the wiring harness is shorted between circuits.
11	INSPECT BETWEEN TCM AND CONNECTOR C-01 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-01. • Inspect for continuity between TCM terminals E and F. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-01 and connector C-32 because the wiring harness is shorted between circuits.
12	INSPECT TCM FOR SHORT BETWEEN CIRCUITS • Disconnect the TCM connector. • Inspect for continuity between TCM terminals E and F (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the TCM and connector C-01 because the wiring harness is shorted between circuits.
No	Replace the TCM because there is a short between circuits in the TCM. (See CONTROL VALVE BODY REMOVAL/INSTALLATION [FN4A-EL].) (See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].) (See CONTROL VALVE BODY REMOVAL/INSTALLATION [GW6A-EL].) (See CONTROL VALVE BODY REMOVAL/INSTALLATION [CW6A-EL].) (See CONTROL VALVE BODY REMOVAL/INSTALLATION [EW6A-EL].)
13	INSPECT BETWEEN CONNECTOR C-03 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector C-03. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Go to the next step.
No	Repair or replace the wiring harness between front body control module (FBCM) and connector C-03 because the wiring harness is shorted between circuits.
14	INSPECT BETWEEN CONNECTOR C-12 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector C-12. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Go to Step 21.
No	Go to the next step.
15	INSPECT BETWEEN LASER SENSOR / FORWARD SENSING CAMERA (FSC) AND CONNECTORS C-12 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Inspect for continuity between laser sensor terminals D and C (with smart city brake support (SCBS)). • Inspect for continuity between forward sensing camera (FSC) terminals E and C (with forward sensing camera (FSC)). • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-03 and connector C-12 because the wiring harness is shorted between circuits.
16	INSPECT BETWEEN CONNECTOR C-42 AND LASER SENSOR FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-42. • Inspect for continuity between laser sensor terminals D and C. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 18.
17	INSPECT LASER SENSOR FOR SHORT BETWEEN CIRCUITS • Disconnect the laser sensor connector. • Inspect for continuity between laser sensor terminals D and C (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the laser sensor and connector C-42 because the wiring harness is shorted between circuits.
No	Replace the laser sensor because there is a short between circuits in the laser sensor. (See LASER SENSOR REMOVAL/INSTALLATION.)
18	INSPECT BETWEEN FORWARD SENSING CAMERA (FSC) AND CONNECTOR C-42 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between forward sensing camera (FSC) terminals E and C. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-12 and connector C-42 because the wiring harness is shorted between circuits.
19	INSPECT BETWEEN FORWARD SENSING CAMERA (FSC) AND CONNECTOR C-27 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-27. • Inspect for continuity between forward sensing camera (FSC) terminals E and C. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-42 and connector C-27 because the wiring harness is shorted between circuits.
20	INSPECT FORWARD SENSING CAMERA (FSC) FOR SHORT BETWEEN CIRCUITS • Disconnect the forward sensing camera (FSC) connector. • Inspect for continuity between forward sensing camera (FSC) terminals E and C (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the forward sensing camera (FSC) and connector C-27 because the wiring harness is shorted between circuits.
No	Replace the forward sensing camera (FSC) because there is a short between circuits in the forward sensing camera (FSC). (See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)
21	INSPECT BETWEEN CONNECTOR C-33 AND DLC-2 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Disconnect connector C-33. • Inspect for continuity between DLC-2 terminals F and E. • Is there continuity?	Yes	Repair or replace the wiring harness between connector C-33 and DLC-2 because the wiring harness is shorted between circuits.
No	Go to the next step.
22	INSPECT BETWEEN START STOP UNIT AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between start stop unit terminals 2M and 2O. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 24.
23	INSPECT START STOP UNIT FOR SHORT BETWEEN CIRCUITS • Disconnect the start stop unit connector. • Is there continuity between start stop unit terminals 2M and 2O (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the start stop unit and connector C-33 because the wiring harness is shorted between circuits.
No	Replace the start stop unit because there is a short between circuits in the start stop unit. (See START STOP UNIT REMOVAL/INSTALLATION.)
24	INSPECT BETWEEN EPS CONTROL MODULE AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between EPS control module terminals 2B and 2D. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 26.
25	INSPECT EPS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the EPS control module connector. • Is there continuity between EPS control module terminals 2B and 2D (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the EPS control module and connector C-33 because the wiring harness is shorted between circuits.
No	Replace the EPS control module because there is a short between circuits in the EPS control module. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
26	INSPECT JB No.2 FOR SHORT BETWEEN CIRCUITS • Connect connector C-33. • Disconnect connector C-34. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Replace the JB No.2 because there is a short between circuits in the JB No.2.
No	Go to the next step.
27	INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOS C-34 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 29.
28	INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS • Disconnect the connectivity master unit (CMU). • Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-34 because the wiring harness is shorted between circuits.
No	Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU). (See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)
29	INSPECT BETWEEN SAS CONTORL MODULE AND CONNECTOS C-34 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between SAS control module terminals 3K and 3L. (with connector 22-pin type) • Inspect for continuity between SAS control module terminals 3B and 3C. (with connector 32-pin type) • Is there continuity?	Yes	Go to the next step.
No	Go to Step 31.
30	INSPECT SAS CONTORL MODULE FOR SHORT BETWEEN CIRCUITS • Disconnect the SAS control module. • Inspect for continuity between SAS control module terminals 3K and 3L (wiring harness side). (with connector 22-pin type) • Inspect for continuity between SAS control module terminals 3B and 3C (wiring harness side). (with connector 32-pin type) • Is there continuity?	Yes	Repair or replace the wiring harness between SAS control module and connector C-34 because the wiring harness is shorted between circuits.
No	Replace the SAS control module because there is a short between circuits in the SAS control module. (See SAS CONTROL MODULE REMOVAL/INSTALLATION.)
31	INSPECT BETWEEN CONNECTOR C-09 AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-09. • Connect connector C-34. • Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Switch the ignition ON (engine off). • Measure the voltage at DLC-2 terminals F and E. • Is the voltage at DLC-2 terminals F and E the same?	Yes	Repair or replace the wiring harness between connector C-34 and connector C-09 because the wiring harness is shorted between circuits.
No	Go to the next step.
32	INSPECT BETWEEN AUDIO AMPLIFIER/VEHICLE CONTROL MODULE (V/C-MODULE) AND CONNECTOR C-09 FOR SHORT BETWEEN CIRCUITS • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) • Inspect for continuity between audio amplifier terminals 2L and 2N. (with Bose^® type audio) • Inspect for continuity between vehicle control module (V/C-module) terminals S and U (with mazda radar cruise control (MRCC) system). • Is there continuity?	Yes	Go to the next step.
No	Go to Step 37.00
33	INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS • Disconnect connector C-40. • Inspect for continuity between audio amplifier terminals 2L and 2N. • Is there continuity?	Yes	Go to the next step.
No	Go to Step 35.
34	INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS • Disconnect the audio amplifier connector. • Is there continuity between audio amplifier terminals 2L and 2N (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the audio amplifier and connector C-40 because the wiring harness is shorted between circuits.
No	Replace the audio amplifier because there is a short between circuits in the audio amplifier. (See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)
35	INSPECT BETWEEN VEHICLE CONTROL MODULE (V/C-MODULE) AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS • Inspect for continuity between vehicle control module (V/C-module) terminals S and U. • Is there continuity?	Yes	Go to the next step.
No	Repair or replace the wiring harness between connector C-09 and connector C-40 because the wiring harness is shorted between circuits.
36	INSPECT VEHICLE CONTROL MODULE (V/C-MODULE) FOR SHORT BETWEEN CIRCUITS • Disconnect the vehicle control module (V/C-module) connector. • Is there continuity between vehicle control module (V/C-module) terminals S and U (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the vehicle control module (V/C-module) and connector C-40 because the wiring harness is shorted between circuits.
No	Replace the vehicle control module (V/C-module) because there is a short between circuits in the vehicle control module (V/C-module). (See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)
37	INSPECT INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS • Disconnect the instrument cluster connector. • Is there continuity between instrument cluster terminals B and D (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the instrument cluster and connector C-09 because the wiring harness is shorted between circuits.
No	Replace the instrument cluster because there is a short between circuits in the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
38	INSPECT PCM FOR SHORT BETWEEN CIRCUITS • Disconnect the PCM connector. • Inspect for continuity between PCM terminals 2C and 2D (wiring harness side). • Is there continuity?	Yes	Repair or replace the wiring harness between the PCM and connector C-32 because the wiring harness is shorted between circuits.
No	Replace the PCM because there is a short between circuits in the PCM. (See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)

Step

Inspection

Action

INSPECT BETWEEN FRONT BODY CONTROL MODULE (FBCM) AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector 2 which has front body control module (FBCM) terminals 2P and 2N.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Go to Step 13.

Go to the next step.

INSPECT FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Inspect for continuity between front body control module (FBCM) terminals 2P and 2N.

• Is there continuity?

Yes

Replace the front body control module (FBCM) because there is a short between circuits in the front body control module (FBCM).

(See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.)

Go to the next step.

INSPECT BETWEEN DSC HU/CM AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between DSC HU/CM terminals AF and AC.

• Is there continuity?

Yes

Go to the next step.

• Go to Step 5.(ATX)

• Go to Step 6.(MTX)

INSPECT OR DSC HU/CM FOR SHORT BETWEEN CIRCUITS

• Disconnect the DSC HU/CM connector.

• Inspect for continuity between DSC HU/CM terminals AF and AC (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the DSC HU/CM and front body control module (FBCM) because the wiring harness is shorted between circuits.

Replace the DSC HU/CM because there is a short between circuits in the DSC HU/CM.

(See DSC HU/CM REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTOR C-32 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector C-32.

• Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-32 and front body control module (FBCM) because the wiring harness is shorted between circuits.

Go to Step 8.

INSPECT BETWEEN CONNECTOR C-01 AND FRONT BODY CONTROL MODULE (FBCM) FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector C-01.

• Connect connector 2 which has front body control module (FBCM) terminals 2P and 2N.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-01 and front body control module (FBCM) because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN CONNECTOR C-32 AND CONNECTOR C-01 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector C-32.

• Connect connector C-01.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-32 and connector C-01 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between AFS control module / auto leveling control module terminals A and B.

• Is there continuity?

Yes

Go to the next step.

Go to Step 10.

INSPECT AFS CONTROL MODULE / AUTO LEVELING CONTROL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the AFS control module / auto leveling control module connector.

• Inspect for continuity between AFS control module / auto leveling control module terminals A and B (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the AFS control module / auto leveling control module and connector C-32 because the wiring harness is shorted between circuits.

Replace the AFS control module / auto leveling control module because there is a short between circuits in the AFS control module / auto leveling control module.

(See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.)

(See AUTO LEVELING CONTROL MODULE REMOVAL/INSTALLATION.)

INSPECT BETWEEN TCM AND CONNECTOR C-32 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between TCM terminals E and F.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between the front body control module (FBCM) and connector C-32 because the wiring harness is shorted between circuits.

INSPECT BETWEEN TCM AND CONNECTOR C-01 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-01.

• Inspect for continuity between TCM terminals E and F.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-01 and connector C-32 because the wiring harness is shorted between circuits.

INSPECT TCM FOR SHORT BETWEEN CIRCUITS

• Disconnect the TCM connector.

• Inspect for continuity between TCM terminals E and F (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the TCM and connector C-01 because the wiring harness is shorted between circuits.

Replace the TCM because there is a short between circuits in the TCM.

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FN4A-EL].)

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [FW6A-EL].)

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [GW6A-EL].)

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [CW6A-EL].)

(See CONTROL VALVE BODY REMOVAL/INSTALLATION [EW6A-EL].)

INSPECT BETWEEN CONNECTOR C-03 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector C-03.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Go to the next step.

Repair or replace the wiring harness between front body control module (FBCM) and connector C-03 because the wiring harness is shorted between circuits.

INSPECT BETWEEN CONNECTOR C-12 AND INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector C-12.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Go to Step 21.

Go to the next step.

INSPECT BETWEEN LASER SENSOR / FORWARD SENSING CAMERA (FSC) AND CONNECTORS C-12 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Inspect for continuity between laser sensor terminals D and C (with smart city brake support (SCBS)).

• Inspect for continuity between forward sensing camera (FSC) terminals E and C (with forward sensing camera (FSC)).

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-03 and connector C-12 because the wiring harness is shorted between circuits.

INSPECT BETWEEN CONNECTOR C-42 AND LASER SENSOR FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-42.

• Inspect for continuity between laser sensor terminals D and C.

• Is there continuity?

Yes

Go to the next step.

Go to Step 18.

INSPECT LASER SENSOR FOR SHORT BETWEEN CIRCUITS

• Disconnect the laser sensor connector.

• Inspect for continuity between laser sensor terminals D and C (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the laser sensor and connector C-42 because the wiring harness is shorted between circuits.

Replace the laser sensor because there is a short between circuits in the laser sensor.

(See LASER SENSOR REMOVAL/INSTALLATION.)

INSPECT BETWEEN FORWARD SENSING CAMERA (FSC) AND CONNECTOR C-42 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between forward sensing camera (FSC) terminals E and C.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-12 and connector C-42 because the wiring harness is shorted between circuits.

INSPECT BETWEEN FORWARD SENSING CAMERA (FSC) AND CONNECTOR C-27 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-27.

• Inspect for continuity between forward sensing camera (FSC) terminals E and C.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-42 and connector C-27 because the wiring harness is shorted between circuits.

INSPECT FORWARD SENSING CAMERA (FSC) FOR SHORT BETWEEN CIRCUITS

• Disconnect the forward sensing camera (FSC) connector.

• Inspect for continuity between forward sensing camera (FSC) terminals E and C (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the forward sensing camera (FSC) and connector C-27 because the wiring harness is shorted between circuits.

Replace the forward sensing camera (FSC) because there is a short between circuits in the forward sensing camera (FSC).

(See FORWARD SENSING CAMERA (FSC) REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTOR C-33 AND DLC-2 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Disconnect connector C-33.

• Inspect for continuity between DLC-2 terminals F and E.

• Is there continuity?

Yes

Repair or replace the wiring harness between connector C-33 and DLC-2 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN START STOP UNIT AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between start stop unit terminals 2M and 2O.

• Is there continuity?

Yes

Go to the next step.

Go to Step 24.

INSPECT START STOP UNIT FOR SHORT BETWEEN CIRCUITS

• Disconnect the start stop unit connector.

• Is there continuity between start stop unit terminals 2M and 2O (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the start stop unit and connector C-33 because the wiring harness is shorted between circuits.

Replace the start stop unit because there is a short between circuits in the start stop unit.

(See START STOP UNIT REMOVAL/INSTALLATION.)

INSPECT BETWEEN EPS CONTROL MODULE AND CONNECTOR C-33 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between EPS control module terminals 2B and 2D.

• Is there continuity?

Yes

Go to the next step.

Go to Step 26.

INSPECT EPS CONTROL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the EPS control module connector.

• Is there continuity between EPS control module terminals 2B and 2D (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the EPS control module and connector C-33 because the wiring harness is shorted between circuits.

Replace the EPS control module because there is a short between circuits in the EPS control module.

(See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)

INSPECT JB No.2 FOR SHORT BETWEEN CIRCUITS

• Connect connector C-33.

• Disconnect connector C-34.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Replace the JB No.2 because there is a short between circuits in the JB No.2.

Go to the next step.

INSPECT BETWEEN CONNECTIVITY MASTER UNIT (CMU) AND CONNECTOS C-34 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F.

• Is there continuity?

Yes

Go to the next step.

Go to Step 29.

INSPECT CONNECTIVITY MASTER UNIT (CMU) FOR SHORT BETWEEN CIRCUITS

• Disconnect the connectivity master unit (CMU).

• Inspect for continuity between connectivity master unit (CMU) terminals 2E and 2F (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between connectivity master unit (CMU) and connector C-34 because the wiring harness is shorted between circuits.

Replace the connectivity master unit (CMU) because there is a short between circuits in the connectivity master unit (CMU).

(See CONNECTIVITY MASTER UNIT (CMU) REMOVAL/INSTALLATION.)

INSPECT BETWEEN SAS CONTORL MODULE AND CONNECTOS C-34 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between SAS control module terminals 3K and 3L. (with connector 22-pin type)

• Inspect for continuity between SAS control module terminals 3B and 3C. (with connector 32-pin type)

• Is there continuity?

Yes

Go to the next step.

Go to Step 31.

INSPECT SAS CONTORL MODULE FOR SHORT BETWEEN CIRCUITS

• Disconnect the SAS control module.

• Inspect for continuity between SAS control module terminals 3K and 3L (wiring harness side). (with connector 22-pin type)

• Inspect for continuity between SAS control module terminals 3B and 3C (wiring harness side). (with connector 32-pin type)

• Is there continuity?

Yes

Repair or replace the wiring harness between SAS control module and connector C-34 because the wiring harness is shorted between circuits.

Replace the SAS control module because there is a short between circuits in the SAS control module.

(See SAS CONTROL MODULE REMOVAL/INSTALLATION.)

INSPECT BETWEEN CONNECTOR C-09 AND CONNECTOR C-34 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-09.

• Connect connector C-34.

• Connect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Switch the ignition ON (engine off).

• Measure the voltage at DLC-2 terminals F and E.

• Is the voltage at DLC-2 terminals F and E the same?

Yes

Repair or replace the wiring harness between connector C-34 and connector C-09 because the wiring harness is shorted between circuits.

Go to the next step.

INSPECT BETWEEN AUDIO AMPLIFIER/VEHICLE CONTROL MODULE (V/C-MODULE) AND CONNECTOR C-09 FOR SHORT BETWEEN CIRCUITS

• Switch the ignition off.

• Disconnect the negative battery cable.

(See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].)

• Inspect for continuity between audio amplifier terminals 2L and 2N. (with Bose^® type audio)

• Inspect for continuity between vehicle control module (V/C-module) terminals S and U (with mazda radar cruise control (MRCC) system).

• Is there continuity?

Yes

Go to the next step.

Go to Step 37.00

INSPECT BETWEEN AUDIO AMPLIFIER AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS

• Disconnect connector C-40.

• Inspect for continuity between audio amplifier terminals 2L and 2N.

• Is there continuity?

Yes

Go to the next step.

Go to Step 35.

INSPECT AUDIO AMPLIFIER FOR SHORT BETWEEN CIRCUITS

• Disconnect the audio amplifier connector.

• Is there continuity between audio amplifier terminals 2L and 2N (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the audio amplifier and connector C-40 because the wiring harness is shorted between circuits.

Replace the audio amplifier because there is a short between circuits in the audio amplifier.

(See AUDIO AMPLIFIER REMOVAL/INSTALLATION.)

INSPECT BETWEEN VEHICLE CONTROL MODULE (V/C-MODULE) AND CONNECTOR C-40 FOR SHORT BETWEEN CIRCUITS

• Inspect for continuity between vehicle control module (V/C-module) terminals S and U.

• Is there continuity?

Yes

Go to the next step.

Repair or replace the wiring harness between connector C-09 and connector C-40 because the wiring harness is shorted between circuits.

INSPECT VEHICLE CONTROL MODULE (V/C-MODULE) FOR SHORT BETWEEN CIRCUITS

• Disconnect the vehicle control module (V/C-module) connector.

• Is there continuity between vehicle control module (V/C-module) terminals S and U (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the vehicle control module (V/C-module) and connector C-40 because the wiring harness is shorted between circuits.

Replace the vehicle control module (V/C-module) because there is a short between circuits in the vehicle control module (V/C-module).

(See VEHICLE CONTROL MODULE (V/C-MODULE) REMOVAL/INSTALLATION [MAZDA RADAR CRUISE CONTROL (MRCC) SYSTEM].)

INSPECT INSTRUMENT CLUSTER FOR SHORT BETWEEN CIRCUITS

• Disconnect the instrument cluster connector.

• Is there continuity between instrument cluster terminals B and D (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the instrument cluster and connector C-09 because the wiring harness is shorted between circuits.

Replace the instrument cluster because there is a short between circuits in the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

INSPECT PCM FOR SHORT BETWEEN CIRCUITS

• Disconnect the PCM connector.

• Inspect for continuity between PCM terminals 2C and 2D (wiring harness side).

• Is there continuity?

Yes

Repair or replace the wiring harness between the PCM and connector C-32 because the wiring harness is shorted between circuits.

Replace the PCM because there is a short between circuits in the PCM.

(See PCM REMOVAL/INSTALLATION [SKYACTIV-D 1.5].)