B3723

DTC B3723

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 battery.
- Rear wiper relay control output is ON.

ACTIONS TAKEN WHEN THE DTC SETS
- Service, wrench, light will illuminate.
- The rear wipers are inoperative.

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
- When a short to battery voltage condition exists in circuit 1445 and the BCM has been requested to activate the rear wiper relay, the BCM will attempt to switch circuit 1445 to ground. High current flow will result and the BCM output will go into a protective state. The BCM output will not allow itself to be activated for as much as 3 minutes.
- 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.
- Inspect wiring harness for damage. Check for broken or chaffed insulation.
- Review all fail information as this may assist in determining the conditions when the fault occurs.
- If fault is suspected to be intermittent, wiggling harness wiring may help in locating fault.

TEST

Steps 1-8: