B3722

DTC B3722

CIRCUIT DESCRIPTION




When operation of the rear wiper is selected, battery voltage from the rear wiper switch is applied to the rear wiper input of the body control module (BCM) circuit 94. The BCM responds by switching circuit 1445 to ground. This action energizes the rear wiper relay, providing power to the rear wiper motor.

CONDITIONS FOR RUNNING THE DTC
Ignition is in RUN or ACC position.

CONDITIONS FOR SETTING THE DTC
- Rear wiper relay control circuit, circuit 1445, is shorted to ground or open.
- Rear wiper relay control output if OFF.

ACTIONS TAKEN WHEN THE DTC SETS
Service, wrench, light will illuminate.

CONDITIONS FOR CLEARING THE DTC
- A current DTC clears when the fault is no longer present.
- A history DTC clears when the module ignition cycle counter reaches the reset threshold, without a repeat of the fault.

DIAGNOSTIC AIDS
- Check for poor connection at the BCM. Inspect harness connectors for backed out terminals, improper terminal mating, broken connectors locks, improperly formed or damaged terminals and poor terminal-to-wire connection, terminal crimped over wire insulation and not conductors.
- If circuit 1445 is open, the rear wipers will be inoperative.
- If circuit 1445 is shorted to ground, the rear wipers are always ON.
- Inspect wiring harness for damage. Check for broken or chaffed insulation.
- If fault is suspected to be intermittent, wiggling harness wiring may help in locating fault.

TEST

Steps 1-13:

Step 14: