B3708

DTC B3708

CIRCUIT DESCRIPTION




The body control module (BCM) monitors the windshield washer pump control circuit 228. When a front windshield wash is requested for more than two minutes, circuit 228 at battery voltage, the BCM will turn OFF the windshield washer pump if the front wiper is NOT requested by the wiper switch.

Battery voltage for the windshield washer pump is supplied through the front wiper fuse and windshield wiper washer switch. Grounding for the windshield washer pump is through circuit 550 or through the OFF position of the rear washer switch, when equipped.

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

CONDITIONS FOR SETTING THE DTC
Front windshield washer pump control circuit 228 shorted to battery voltage for two minutes.

ACTIONS TAKEN WHEN THE DTC SETS
- No light will illuminate in I/P.
- Default turn OFF washer motor after failing DTC if wiper input is not active.

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 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. Check for broken or chaffed insulation.
- If fault is suspected to be intermittent, wiggling harness wiring may help in locating fault.

TEST

Steps 1-7: