B3708
DTC B3708
CIRCUIT DESCRIPTION
The body control module (BCM) monitors the windshield washer pump control circuit. When a front windshield wash is requested for more than 2 minutes, 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 FRT WIPER 25 A fuse and windshield wiper washer switch. Grounding for the windshield washer pump is through the OFF position of the rear washer switch, when equipped.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B3708 Front Washer Motor Input High
CONDITIONS FOR RUNNING THE DTC
Ignition is in RUN or ACC position.
CONDITIONS FOR SETTING THE DTC
Front windshield washer pump control circuit is shorted to battery voltage for 2 minutes.
ACTION TAKEN WHEN THE DTC SETS
- No light will illuminate in the instrument panel (I/P).
- Default turns 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
- Inspect 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. Inspect for broken or chaffed insulation.
- If fault is suspected to be intermittent, wiggling harness wiring may help in locating fault.
TEST
