DTC B1D00:13 [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE]

id1502b6026200

Description

Headlight (LH) circuit malfunction

Detection condition

•  The AFS control module detected an open circuit in the headlight (LH) circuit during the headlight LO on control for 5 s or more with the ignition switched ON (engine off or on).

Fail-safe

•  Control of the AFS is continued.

•  Control of the headlight auto leveling system is continued.

Possible cause

•  DTCs are stored in the front body control module (FBCM).

―  Headlight LO (LH) circuit malfunction

•  Front combination light (LH) connector or terminal malfunction

•  AFS control module connector or terminal malfunction

•  Short to ground in wiring harness between AFS control module terminal L and front combination light (LH) terminal N

•  Open circuit in wiring harness between AFS control module terminal L and front combination light (LH) terminal N

•  Front combination light (LH) malfunction

•  AFS control module malfunction

Description	Headlight (LH) circuit malfunction
Detection condition	• The AFS control module detected an open circuit in the headlight (LH) circuit during the headlight LO on control for 5 s or more with the ignition switched ON (engine off or on).
Fail-safe	• Control of the AFS is continued. • Control of the headlight auto leveling system is continued.
Possible cause	• DTCs are stored in the front body control module (FBCM). ― Headlight LO (LH) circuit malfunction • Front combination light (LH) connector or terminal malfunction • AFS control module connector or terminal malfunction • Short to ground in wiring harness between AFS control module terminal L and front combination light (LH) terminal N • Open circuit in wiring harness between AFS control module terminal L and front combination light (LH) terminal N • Front combination light (LH) malfunction • AFS control module malfunction

Diagnostic Procedure

Step	Inspection		Action
1	VERIFY FRONT BODY CONTROL MODULE (FBCM) DTCs • Retrieve the front body control module (FBCM) DTCs using the M-MDS. (See DTC INSPECTION [FRONT BODY CONTROL MODULE (FBCM)].) • Are any DTCs displayed?	Yes	Repair or replace the malfunctioning part according to the applicable DTC troubleshooting. (See DTC TABLE [FRONT BODY CONTROL MODULE (FBCM)].)
1		No	Go to the next step.
2	INSPECT FRONT COMBINATION LIGHT (LH) CONNECTOR CONDITION • Switch the ignition off. • Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Disconnect the front combination light (LH) 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 7.
3	INSPECT AFS CONTROL MODULE CONNECTOR CONDITION • Disconnect the AFS control module 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.
3		No	Repair or replace the connector, then go to Step 7.
4	INSPECT HEADLIGHT (LH) MALFUNCTION DETECTION CIRCUIT FOR SHORT TO GROUND • Verify that the front combination light (LH) and AFS control module connectors are disconnected. • Inspect for continuity between front combination light (LH) terminal N (wiring harness-side) and body ground. • Is there continuity?	Yes	Refer to the wiring diagram and verify whether or not there is a common connector between AFS control module terminal L and front combination light (LH) terminal N. 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 Step 7.
4		No	Go to the next step.
5	INSPECT HEADLIGHT (LH) MALFUNCTION DETECTION CIRCUIT FOR OPEN CIRCUIT • Verify that the front combination light (LH) and AFS control module connectors are disconnected. • Inspect the wiring harness for continuity between AFS control module terminal L (wiring harness-side) and front combination light (LH) terminal N (wiring harness-side). • Is there continuity?	Yes	Go to the next step.
5		No	Refer to the wiring diagram and verify whether or not there is a common connector between AFS control module terminal L and front combination light (LH) terminal N. 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 an open circuit. • Repair or replace the malfunctioning part. If there is no common connector: • Repair or replace the wiring harness which has an open circuit. Go to Step 7.
6	VERIFY IF MALFUNCTIONING LOCATION IS FRONT COMBINATION LIGHT (LH) DEPENDING ON REPEATABILITY • Always reconnect all disconnected connectors. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC for the AFS control module using the M-MDS. (See CLEARING DTC [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].) • Switch the ignition ON (engine off or on). • Operate the light switch to the HEAD position and the dimmer switch to the LO position, and wait for 5 s or more. • Retrieve the AFS control module DTCs using the M-MDS. (See DTC INSPECTION [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].) • Is the same Pending DTC present?	Yes	Replace the front combination light (LH), then go to the next step. (See FRONT COMBINATION LIGHT REMOVAL/INSTALLATION.)
6		No	Go to Step 8.
7	VERIFY THAT REPAIRS HAVE BEEN COMPLETED • Always reconnect all disconnected connectors. • Connect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION.) • Clear the DTC for the AFS control module using the M-MDS. (See CLEARING DTC [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].) • Switch the ignition ON (engine off or on). • Operate the light switch to the HEAD position and the dimmer switch to the LO position, and wait for 5 s or more. • Retrieve the AFS control module DTCs using the M-MDS. (See DTC INSPECTION [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].) • Is the same Pending DTC present?	Yes	Repeat the inspection from Step 1. • If the malfunction recurs, replace the AFS control module. (See ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE REMOVAL/INSTALLATION.) Go to the next step.
7		No	Go to the next step.
8	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 [ADAPTIVE FRONT LIGHTING SYSTEM (AFS) CONTROL MODULE].)
8		No	DTC troubleshooting completed.