B3717

Schematic:

CIRCUIT DESCRIPTION
When intermittent or mist operation of the windshield wiper is selected, battery voltage from the wiper switch is applied to the front wiper input of the Body Control Module (BCM). The BCM responds by switching circuit 1445 to ground. This action energizes the front wiper relay, providing low speed operation of the wiper motor during single swipes.

Control of the wiper during continuous LO or HI speed switch settings is direct wired from the wiper switch to the wiper motor and is not under the control of the BCM.

DTC PARAMETERS
^ Ignition is in RUN or ACC position
^ Circuit 1445, BCM is shorted-to-ground or open

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 DESCRIPTION

Diagnostic Chart: