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.
Ignition is in RUN or ACC position.
Front windshield washer pump control circuit 228 shorted to battery voltage for two minutes.
• | No light will illuminate in I/P. |
• | Default turn OFF washer motor after failing DTC if wiper input is not active. |
• | 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. |
• | 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. |
Step | Action | Yes | No |
---|---|---|---|
Connector End View Reference: Master Electrical Component List in Wiring Systems | |||
1 | Did you perform the Wiper/Washer Diagnostic System Check? | Go to Step 2 | |
2 |
Does the scan tool indicate correct washer pump status, ON/OFF? | Go to Diagnostic Aids | Go to Step 3 |
3 |
Does the scan tool indicate switch is OFF? | Go to Step 5 | Go to Step 4 |
4 |
Did you find and correct the condition? | Go to Step 7 | Go to Step 6 |
5 | Replace the windshield wiper washer switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 7 | -- |
6 |
Important: Perform the programming or set up procedure for the replaced control module if required. Replace the BCM. Refer to Body Control Module Replacement in Body Control System for applicable replacement procedure. Did you complete the replacement? | Go to Step 7 | -- |
7 |
Does the DTC reset? | Go to Step 2 | System OK |