Left Headlamp Low Beam Short To Ground-IPM

LEFT HEADLAMP LOW BEAM SHORT TO GROUND-IPM

For a complete wiring diagram Consult Diagrams/Electrical

- When Monitored:
Output is ON.

- Set Condition:
The IPM detects a short fault condition. Time to set is 1 second.





Diagnostic Test

1. VERIFY CONDITION
Turn the ignition on.
With the scan tool, clear the IPM DTC's.
Turn the headlamps on.
Switch the headlamps between high beam and low beam several times, pausing for 5 seconds in each position.
With the scan tool, read IPM DTC's.
Is this DTC present?

Yes

- Go To3

No

- Go To2

2. INTERMITTENT WIRING PROBLEM
Turn the ignition off.

NOTE: Visually inspect the related wiring harness and circuits. Look for any chafed, pierced, pinched, or partially broken wires.

NOTE: Visually inspect the related wiring harness connectors. Look for broken, bent, pushed out, or corroded terminals.

NOTE: Search for any Technical Service Bulletins (TSB) that may apply.

Were any problems found?

Yes

- Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go To3

3. (L43) LEFT LOW BEAM DRIVER CIRCUIT SHORTED TO GROUND
Turn the ignition off.
Disconnect the Left Headlamp.
Disconnect the Intelligent Power Module C5 harness connector.
Measure the resistance between Ground and the (L43) Left Low Beam Driver circuit.
Is the resistance below 100.0 ohms?

Yes

- Repair the (L43) Left Low Beam Driver circuit for a short to ground.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

- Go To4

4. LEFT HEADLAMP
Turn the ignition off.
Turn the Headlamps off.
Install a substitute Headlamp Bulb in place of the Left Headlamp Bulb.
Turn the ignition on.
With the scan tool, erase the IPM DTC's.
Turn the headlamps on.
Switch the headlamps between high beam and low beam several times, pausing for 5 seconds in each position.
With the scan tool, read IPM DTC's.
Does the scan tool display this DTC?

Yes

- Go To5

No

- Replace the original Left Headlamp Bulb.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

5. WIRING PROBLEM
Turn the ignition off.
Inspect the wiring and connectors associated with the Left Low Beam Driver circuit.
Were any problems found?

Yes

- Repair as necessary.
- Perform BODY VERIFICATION TEST - VER 1.Body Verification Test

No

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