DTC B13CF:19 [FRONT BODY CONTROL MODULE (FBCM)]

id0902p2008400

Description

IG2 power supply output circuit malfunction

Detection condition

•  Front body control module (FBCM) detects over-current in the IG2 power supply output circuit with the ignition switched ON (engine off or on).

Fail-safe function

Not applicable

Possible cause

•  Front body control module (FBCM) connector or terminal malfunction

•  Short to ground in front body control module (FBCM) IG2 power supply output circuit

•  IG2 power supply output circuit related parts malfunction

•  Front body control module (FBCM) malfunction

Description	IG2 power supply output circuit malfunction
Detection condition	• Front body control module (FBCM) detects over-current in the IG2 power supply output circuit with the ignition switched ON (engine off or on).
Fail-safe function	Not applicable
Possible cause	• Front body control module (FBCM) connector or terminal malfunction • Short to ground in front body control module (FBCM) IG2 power supply output circuit • IG2 power supply output circuit related parts malfunction • Front body control module (FBCM) malfunction

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs AGAIN • Clear the DTC for the front body control module (FBCM) using the M-MDS. (See CLEARING DTC [FRONT BODY CONTROL MODULE (FBCM)].) • Retrieve the front body control module (FBCM) DTCs using the M-MDS. (See DTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].) • Is the same DTC displayed?	Yes	Go to the next step.
1		No	Go to Step 6.
2	INSPECT FRONT BODY CONTROL MODULE (FBCM) CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Disconnect the front body control module (FBCM) connector. • Inspect the connector engagement and connection condition and inspect the terminals for damage, deformation, corrosion, or disconnection. • Is the connector normal?	Yes	Go to the next step.
2		No	Repair or replace the connector, then go to Step 5.
3	INSPECT FOR SHORT TO GROUND IN FRONT BODY CONTROL MODULE (FBCM) IG2 POWER SUPPLY OUTPUT CIRCUIT • Verify that the front body control module (FBCM) connector is disconnected. • Inspect for continuity between front body control module (FBCM) terminal 1C (wiring harness-side) and body ground. • Is there continuity?	Yes	Go to the next step.
3		No	Go to Step 5.
4	INSPECT IG2 POWER SUPPLY OUTPUT CIRCUIT RELATED PARTS • Inspect the following parts: ― Climate control unit (See CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER].) (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER].) ― A/C relay (See RELAY INSPECTION.) ― PTC heater (With PTC heater) (See PTC (POSITIVE TEMPERATURE COEFFICIENT) HEATER INSPECTION.) ― Seat warmer control unit (With seat warmer) (See SEAT WARMER UNIT INSPECTION.) • Are all parts normal?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between the following: • Climate control unit—Front body control module (FBCM) terminal 1C • A/C relay—Front body control module (FBCM) terminal 1C • PTC heater—Front body control module (FBCM) terminal 1C (With PTC heater) • Seat warmer control unit—Front body control module (FBCM) terminal 1C (With seat warmer) If there is a common connector: • Determine the malfunctioning part by inspecting the common connector and the terminal for corrosion, damage, or pin disconnection, and the common wiring harness for a short to ground. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has a short to ground. Go to the next step.
4		No	Repair or replace the malfunctioning part, then go to the next step. (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [MANUAL AIR CONDITIONER].) (See CLIMATE CONTROL UNIT REMOVAL/INSTALLATION [FULL-AUTO AIR CONDITIONER].) (See RELAY LOCATION.) (See PTC (POSITIVE TEMPERATURE COEFFICIENT) HEATER REMOVAL/INSTALLATION.) (See FRONT SEAT REMOVAL/INSTALLATION.)
5	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Reconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 1.5, SKYACTIV-G 2.0, SKYACTIV-G 2.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 1.5].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].) (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [MZR 1.6].) • Clear the DTC for the front body control module (FBCM) using the M-MDS. (See CLEARING DTC [FRONT BODY CONTROL MODULE (FBCM)].) • Retrieve the front body control module (FBCM) DTCs using the M-MDS. (See DTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].) • Is the same DTC displayed?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the front body control module (FBCM). (See FRONT BODY CONTROL MODULE (FBCM) REMOVAL/INSTALLATION.) Go to the next step.
5		No	Go to the next step.
6	VERIFY IF OTHER DTCs DISPLAYED • Are any other DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
6		No	DTC troubleshooting completed.