DETERMINING SHORT TO GROUND LOCATION (MS-CAN) [SKYACTIV-D 2.2 (ATX), MZR 1.6]


id100211000900

Caution
•  Perform the following malfunction diagnosis only when it is diagnosed with a short to ground by CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [SKYACTIV-D 2.2 (ATX), MZR 1.6].)

System Wiring Diagram

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Determination Procedure

Caution
•  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.

Step

Inspection

Action

1
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-34 AND INSTRUMENT CLUSTER
•  Disconnect connector C-34.
•  Inspect for continuity at the following terminals:
―  Between DLC-2 terminal L and body ground
―  Between DLC-2 terminal K and body ground
•  Is there continuity?
Yes
Go to Step 5.
No
Go to the next step.
2
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-34 AND PARKING SENSOR CONTROL MODULE
•  Inspect for continuity at the following terminals:
―  Between parking sensor control module terminal AA and body ground
―  Between parking sensor control module terminal AB and body ground
•  Is there continuity?
Yes
Go to the next step.
No
Go to Step 4.
3
INSPECT CAN LINE IN PARKING SENSOR CONTROL MODULE FOR SHORT TO GROUND
•  Disconnect the parking sensor control module connector.
•  Inspect for continuity at the following terminals:
―  Between parking sensor control module terminal AA (wiring harness side) and body ground
―  Between parking sensor control module terminal AB (wiring harness side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between parking sensor control module and connector C-34 because the wiring harness is shorted to ground.
No
Replace the parking sensor control module because there is a short to ground inside the parking sensor control module.
4
INSPECT CAN LINE IN INSTRUMENT CLUSTER FOR SHORT TO GROUND
•  Disconnect the instrument cluster connector.
•  Inspect for continuity at the following terminals:
―  Between instrument cluster terminal C (wiring harness side) and body ground
―  Between instrument cluster terminal E (wiring harness side) and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between the instrument cluster and connector C-34 because the wiring harness is shorted to ground.
No
Replace the instrument cluster because there is a short to ground in the instrument cluster.
5
INSPECT CAN LINE IN JB No.2 FOR SHORT TO GROUND
•  Connect connector C-34.
•  Disconnect connector C-33.
•  Inspect for continuity at the following terminals:
―  Between instrument cluster terminal C and body ground
―  Between instrument cluster terminal E and body ground
•  Is there continuity?
Yes
Replace the JB No.2 because there is a short to ground in the JB No.2.
No
Go to the next step.
6
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-33 AND DLC-2
•  Inspect for continuity at the following terminals:
―  Between DLC-2 terminal L and body ground
―  Between DLC-2 terminal K and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between connector C-33 and DLC-2 because the wiring harness is shorted to ground.
No
Go to the next step.
7
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-33 AND CLIMATE CONTROL UNIT
•  Inspect for continuity at the following terminals:
―  Between climate control unit terminal 1S and body ground (with full-auto air conditioner (dual type))
―  Between climate control unit terminal 1U and body ground (with full-auto air conditioner (dual type))
―  Between climate control unit terminal D and body ground (with full-auto air conditioner (single type))
―  Between climate control unit terminal B and body ground (with full-auto air conditioner (single type))
•  Is there continuity?
Yes
Go to the next step.
No
Go to Step 9.
8
INSPECT CAN LINE IN CLIMATE CONTROL UNIT FOR SHORT TO GROUND
•  Disconnect the climate control unit connector.
•  Inspect for continuity at the following terminals:
―  Between climate control unit terminal 1S (wiring harness side) and body ground (with full-auto air conditioner (dual type))
―  Between climate control unit terminal 1U (wiring harness side) and body ground (with full-auto air conditioner (dual type))
―  Between climate control unit terminal D (wiring harness side) and body ground (with full-auto air conditioner (single type))
―  Between climate control unit terminal B (wiring harness side) and body ground (with full-auto air conditioner (single type))
•  Is there continuity?
Yes
Repair or replace the wiring harness between the climate control unit and connector C-33 because the wiring harness is shorted to ground.
No
Replace the climate control unit because there is a short to ground inside the climate control unit.
9
INSPECT FOR SHORT TO GROUND BETWEEN CONNECTOR C-08 AND CONNECTOR C-33
•  Disconnect connector C-08.
•  Connect connector C-33.
•  Inspect for continuity at the following terminals:
―  Between DLC-2 terminal L and body ground
―  Between DLC-2 terminal K and body ground
•  Is there continuity?
Yes
Repair or replace the wiring harness between connector C-08 and connector C-33 because the wiring harness is shorted to ground.
No
Go to the next step.
10
INSPECT FOR SHORT TO GROUND BETWEEN REAR VEHICLE MONITORING CONTROL MODULE (LH) / BSM CONTROL MODULE (LH) AND REAR BODY CONTROL MODULE (RBCM)
•  Disconnect the rear body control module (RBCM) connector.
•  Inspect for continuity at the following terminals:
―  Between rear body control module (RBCM) terminal 4G (wiring harness side) and body ground
―  Between rear body control module (RBCM) terminal 4J (wiring harness side) and body ground
•  Is there continuity?
Yes
Go to the next step.
No
Go to Step 13.
11
INSPECT FOR SHORT TO GROUND BETWEEN REAR VEHICLE MONITORING CONTROL MODULE (LH) / BSM CONTROL MODULE (LH) AND CONNECTOR C-19
•  Disconnect connector C-19.
•  Inspect for continuity at the following terminals:
―  Between rear vehicle monitoring control module (LH) terminal A and body ground (with rear vehicle monitoring system)
―  Between rear vehicle monitoring control module (LH) terminal D and body ground (with rear vehicle monitoring system)
―  Between BSM control module (LH) terminal C and body ground (with BSM system)
―  Between BSM control module (LH) terminal D and body ground (with BSM system)
•  Is there continuity?
Yes
Go to the next step.
No
Repair or replace the wiring harness between the rear body control module (RBCM) and connector C-19 because the wiring harness is shorted to ground.
12
INSPECT CAN LINE IN REAR VEHICLE MONITORING CONTROL MODULE (LH) / BSM CONTROL MODULE (LH) FOR SHORT TO GROUND
•  Disconnect the rear vehicle monitoring control module (LH) connector. (with rear vehicle monitoring system)
•  Disconnect the BSM control module (LH) connector. (with BSM system)
•  Inspect for continuity at the following terminals:
―  Between rear vehicle monitoring control module (LH) terminal A (wiring harness side) and body ground (with rear vehicle monitoring system)
―  Between rear vehicle monitoring control module (LH) terminal D (wiring harness side) and body ground (with rear vehicle monitoring system)
―  Between BSM control module (LH) terminal C (wiring harness side) and body ground (with BSM system)
―  Between BSM control module (LH) terminal D (wiring harness side) and body ground (with BSM system)
•  Is there continuity?
Yes
Repair or replace the wiring harness between the rear vehicle monitoring control module (LH) / BSM control module (LH) and connector C-19 because the wiring harness is shorted to ground.
No
Replace the rear vehicle monitoring control module (LH) / BSM control module (LH) because there is a short to ground in the rear vehicle monitoring control module (LH) / BSM control module (LH).
13
INSPECT CAN LINE IN REAR BODY CONTROL MODULE (RBCM) FOR SHORT TO GROUND
•  Inspect for continuity at the following terminals:
―  Between rear body control module (RBCM) terminal 3E and body ground
―  Between rear body control module (RBCM) terminal 3G and body ground
•  Is there continuity?
Yes
Replace the rear body control module (RBCM) because there is a short to ground in the rear body control module (RBCM).
No
Repair or replace the wiring harness between the rear body control module (RBCM) and connector C-08 because the wiring harness is shorted to ground.