GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2006 🢒 Torrent 🢒 DTC 🢒 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.

Actions 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.

Step

Action

Yes

No

Schematic Reference: Wiper/Washer Schematics

Connector End View Reference: Master Electrical Component List

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

2
  1. Turn ON the ignition, with the engine OFF.
  2. With a scan tool, observe the front washer motor input in the body control module (BCM) wiper/washer data list, while cycling the front washer switch.

Does the scan tool indicate the correct washer pump status, ON/OFF?

Go to Diagnostic Aids

Go to Step 3

3
  1. Turn OFF the ignition.
  2. Disconnect the windshield wiper washer switch.
  3. Turn ON the ignition, with the engine OFF.
  4. With a scan tool, observe the front washer motor input.

Does the scan tool indicate the switch is OFF?

Go to Step 5

Go to Step 4

4
  1. Turn OFF the ignition.
  2. Disconnect the BCM connector C2.
  3. Test the windshield washer pump control circuit for a short to voltage. Refer to Circuit Testing and Wiring Repairs .

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 .

Did you complete the replacement?

Go to Step 7

--

6

Replace the BCM. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 7

--

7
  1. Use the scan tool to clear the DTCs.
  2. Operate the vehicle within the conditions for running the DTC, as specified in the supporting text.

Does the DTC reset?

Go to Step 2

System OK