For 1990-2009 cars

### Circuit Description

The body control module (BCM) compares the state of the park lamp circuit 9 to the high beam headlamp circuit 1200 and the low beam headlamp circuit 1201.

If the park lamp circuit 9 is grounded/open and either the low beam circuit is at battery voltage or the high beam circuit is grounded, diagnostic code B2662 will fail.

### Conditions for Setting the DTC

• | The headlamp switch is ON.

• | No voltage on circuit 9

• | The conditions are present for 1 second.

### Diagnostic Aids

• | Inspect for poor connection at the BCM. Inspect the harness connectors for backed out terminals, improper terminal mating, broken connector locks, improperly formed or damaged terminals and poor terminal-to-wire connection -- terminal crimped over wire insulation and not conductors.

• | Inspect wiring harness for damage. Inspect for broken or chaffed insulation.

• | Inspect for poor connection at the headlamp switch.

• | If fault is suspected to be intermittent, wiggling the harness wiring may help in locating fault.

• | If other lighting DTCs are present diagnose those DTCs first.