B2312-15

B2312-15-WIPER ON/OFF CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN





For a complete wiring diagram, refer to the Wiring Information.

- When Monitored:
With the windshield wipers off.

- Set Condition:
The Body Control Module detects a short to voltage or open in the wiper on/off relay coil control circuit.





1. INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, clear all DTCs.
3. Turn the ignition off.
4. Turn the ignition on.
5. With the scan tool, read DTCs.

Does the scan tool display DTC: B2312-15-WIPER ON/OFF CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. CHECK THE WIPER ON/OFF RELAY FOR CORRECT OPERATION
1. Turn the ignition off.
2. Remove the Front Wiper On/Off Relay and substitute it with a known good relay.
3. Turn the ignition on.
4. With the scan tool, read DTCs.

Does the scan tool display DTC: B2312-15-WIPER ON/OFF CONTROL - CIRCUIT SHORT TO BATTERY OR OPEN?

Yes

- Go To 3

No

- Replace the Front Wiper On/Off Relay.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

3. CHECK THE (W8) WIPER ON/OFF RELAY CONTROL CIRCUIT FOR A SHORT TO VOLTAGE
1. Turn the ignition off.
2. Remove the Front Wiper On/Off Relay.
3. Using a 12-volt test light connected to ground, check the (W8) Wiper On/Off Relay Control circuit.

Does the test light illuminate brightly?

Yes

- Repair the short to voltage in the (W8) Wiper On/Off Relay Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Go To 4

4. CHECK THE (W8) WIPER ON/OFF RELAY CONTROL CIRCUIT FOR AN OPEN
1. Disconnect the BCM A harness connector.
2. Measure the resistance of the (W8) Wiper On/Off Relay Control circuit between the Front Wiper On/Off Relay and the BCM A harness connector.

Is the resistance below 5.0 Ohms?

Yes

- Replace the Body Control Module (BCM). Body Control Module - Removal.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Repair the open in the (W8) Wiper On/Off Relay Control circuit.
- Perform the BODY VERIFICATION TEST. Body Verification Test.