Cruze

Washer Malfunction

The body control module (BCM) controls the windscreen washer fluid pump based on an input from the windscreen wiper/washer switch. The BCM monitors the washer switch through the windscreen washer switch signal circuit. When the washer switch is closed, ground is supplied to the windscreen washer switch signal circuit. When this is the case, the BCM will command the windscreen washer fluid pump and the low speed wipers on.

Schematic Reference

Wiper/Washer Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Wiper/Washer System Description and Operation

Electrical Information Reference

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, observe the scan tool Windscreen Washer Switch parameter while pressing the washer switch.

⇒	If the parameter does not go ACTIVE, refer to Windscreen Washer Switch Circuit Malfunction.

2. Command the windscreen washer relay ON with a scan tool. The windscreen washer should activate.

⇒	If the windscreen washer does not activate, refer to Washer Pump Circuit Malfunction.

Windscreen Washer Switch Circuit Malfunction

1. Ignition OFF, disconnect the X1 harness at the S82 windscreen wiper/washer switch.
2. Verify that a test lamp illuminates between the low reference terminal 2 and B+.

⇒	If the test lamp does not illuminate, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K9 BCM.

3. Ignition ON, verify that the scan tool parameter Windscreen Washer Switch is INACTIVE.

⇒	If not the specified value, test the signal circuit terminal 7 for a short to ground. If the circuit tests normal, replace the K9 BCM.

4. Install a 3 A fused jumper wire between the signal circuit terminal 7 and the low reference circuit terminal 2. Verify the scan tool Windscreen Washer Switch parameter is ACTIVE.

⇒	If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K9 BCM.

5. If all circuits test normal, test or replace the S82 windscreen wiper/washer switch.

Washer Pump Circuit Malfunction

1. Ignition OFF, disconnect the X2 harness connector at the X50A underbonnet fuse block.
2. Disconnect the X4 harness connector at the K9 BCM.
3. Test for less that 5 Ω between the control circuit terminal 60 at the X50A underbonnet fuse block X2 connector and control circuit terminal 14 at the K9 BCM X4 connector.

⇒	If the value is not within the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuit tests normal, test or replace the K9 BCM.

4. Test for infinite resistance between the control circuit terminal 60 at the X50A underbonnet fuse block X2 connector and ground.

⇒	If the value is not within the specified range, test the control circuit for a short to ground.

5. Connect the X2 harness connector at the X50A underbonnet fuse block and the X4 harness connector at the K9 BCM. Disconnect the harness connector at the G24 windscreen washer pump.
6. Test for less than 5 Ω between the ground circuit terminal 2 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

7. Connect a test lamp between control circuit terminal 1 and ground.
8. Ignition ON, command the Windscreen Washer Relay Command ON and OFF with a scan tool. The test lamp should turn ON and OFF when changing between the commanded states.

⇒	If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the X50A underbonnet fuse block.

⇒	If the test lamp is always OFF and the circuit fuse is good, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the X50A underbonnet fuse block.

9. If all circuits test normal, test or replace the G24 windscreen washer pump.

Multifunction Switch

1. Ignition OFF, disconnect the harness connector at the S82 windscreen wiper/washer switch.
2. Test for less than 5 Ω between the S82 windscreen wiper/washer switch terminal 2 and terminal 7 while activating the washers.

⇒	If not the specified value, replace the S82 windscreen wiper/washer switch.

Washer Pump

1. Ignition OFF, disconnect the harness connector at the G24 windscreen washer pump.
2. Install a 10A fused jumper wire between the control terminal 1 and 12V. Install a jumper wire between the ground terminal 2 and ground.
3. Verify the G24 windscreen washer pump is activated.

⇒	If the G24 windscreen washer pump does not activate, replace the G24 windscreen washer pump.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.