For 1990-2009 cars

### Park Lamp Switch Circuit Malfunction

### 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 is grounded/open and either the high beam circuit is at battery voltage or the low beam circuit is grounded, diagnostic code B2662 will set.

### Conditions for Setting the DTC

• | Headlamp switch On

• | Circuit 9 grounded or open

• | Conditions present for 1 second

### Diagnostic Aids

• | Check for poor connection at the BCM. Inspect harness connectors for:

• | backed out terminals

• | improper terminal mating

• | broken connector locks

• | improperly formed or damaged terminals

• | poor terminal-to-wire connection (terminal crimped over wire insulation and not conductors).

• | Inspect the wiring harness for damage. Check for broken or chafed insulation.

• | Check for poor connection at the headlamp switch.

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