B1462 - Seat Belt Switch Circuit Failure

DTC B1462: Seat Belt Switch Circuit Failure

B1462-1 - Perform Lighting Control Module Self Test

- Make sure all doors are fully closed to second latch.
- During self test make sure that no new warnings are displayed on instrument cluster.
- Rerun self test.

Is DTC B1462 still present?

YES GO to B1462-2.
NO System operating normally.

B1462-2 - Check Lighting Control Module Function

- Enter Diagnostic Data Link.
- Enter LCM - Lighting Control Module.
- Enter PIDIDATA Monitor and Record.
- Buckle driver safety belt.
- Select PID LFSBELT - Left Front Seat Belt.

Does PID read IN?

YES REPLACE lighting control module. RESTORE vehicle. RETEST system.
NO Leave safety belt buckled. GO to B1462-3.

B1462-3 - Check Circuit 85 (BR/LB) For Open

- Disconnect lighting control module connector C2.
- Using an ohmmeter connected to a known good ground connect second lead to pin C2-17, circuit 85 (BR/LB) at safety belt buckle switch 2-pin connector.

Is resistance 5 ohms or less?

YES REPLACE lighting control module. RESTORE vehicle. RETEST system.
NO GO to B1462-4.

B1462-4 - Check Seat Belt Switch Function

- Disconnect driver safety belt buckle switch.
- Measure resistance of circuit 85 (BR/LB) from lighting control module connector pin C2-7 to circuit 85 (BR/LB) at safety belt buckle switch 2-pin connector.

Is resistance 5 ohms or less?

YES REPLACE driver safety belt buckle switch. RESTORE vehicle. RETEST system.
NO SERVICE circuit 85 (BR/LB) for open circuit. RESTORE vehicle. RETEST system.