Front Wiper Hi/Lo Relay Open-IPM

FRONT WIPER HI/LO RELAY OPEN-IPM





For a complete wiring diagram Consult Diagrams/Electrical





Diagnostic Test

1. FUSED B(+) CIRCUIT OPEN




Turn the ignition off.
Remove the Wiper On/Off Relay from the IPM.
Using a 12-volt test light connected to ground, probe both (A110) (A116) Fused B(+) circuits in the IPM.

NOTE: The test light must illuminate brightly. Compare the brightness to that of a direct connection to the battery.

Does the test light illuminate brightly at each terminal?

Yes

- Go To2

No

- Repair the Fused B(+) circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.

2. WIPER ON/OFF RELAY
Install a substitute relay in place of the Wiper On/Off Relay.
Turn the ignition on.
Turn the wipers on.
Does the system operate correctly?

Yes

- Replace the Wiper On/Off Relay.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go To3

3. COMMON CIRCUIT OPEN
Turn the ignition off.
Remove the wiper High/Low Relay from the IPM.
Remove the wiper On/Off Relay from the IPM.
Measure the resistance of the Common Relay circuit between the High/Low Relay and the On/Off relay in the IPM.
Is the resistance below 10.0 ohms?

Yes

- Go To4

No

- Repair the Common Relay circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

4. WIPER HI/LOW RELAY
Install a substitute relay in place of the Wiper Hi/Low Relay.
Turn the ignition on.
Turn the wipers on.
Does the system operate correctly?

Yes

- Replace the Wiper Hi/Low Relay.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go To5

5. (W3) (W4) WIPER HI/LOW RELAY CONTROL CIRCUIT OPEN




Turn the ignition off.
Remove the Wiper Hi/Low Relay from the IPM.
Disconnect the IPM C8 harness connector.
Connect a jumper wire between the Wiper Hi/Low Relay Control circuit at the IPM connector to ground.
Measure the resistance between ground and both (W3) (W4) Wiper Hi/Low Relay Control circuits.
Is the resistance below 5.0 ohms?

Yes

- Replace the Integrated Power Module.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Repair the applicable Wiper Hi/Low Relay Control circuit for an open.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test