TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Left Headlamp harness connector.
Disconnect the Front Control Module.
Turn the ignition on.
Measure the voltage of the Left High Beam Driver circuit.
Is the voltage below 1.0 volt?All
Ye s®Go To 5
No®Repair the Left High Beam Driver circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
5 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 DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 6
No®Replace the original Left Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
6 Turn the ignition off.
Inspect the wiring and connectors associated with the Left High Beam Driver circuit.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
7 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: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
467
EXTERIOR LIGHTING
LEFT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE Ð
Continued
Symptom:
LEFT LOW BEAM HEADLAMP CIRCUIT SHORTED TO GROUND
POSSIBLE CAUSES
FRONT CONTROL MODULE
LEFT HEADLAMP
LEFT LOW BEAM DRIVER CIRCUIT SHORTED TO GROUND
WIRING PROBLEM
WIRING HARNESS INSPECTION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Is this DTC present?All
Ye s®Go To 2
No®Go To 5
2 Turn the ignition off.
Disconnect the Left Headlamp.
Disconnect the Front Control Module from the Intelligent Power Module.
Measure the resistance between Ground and the Left Low Beam Driver circuit.
Is the resistance below 100.0 ohms?All
Ye s®Repair the Left Low Beam Driver circuit for a short to ground
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
3 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 DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 4
No®Replace the original Left Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
470
EXTERIOR LIGHTING
TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Left Headlamp harness connector.
Disconnect the Front Control Module.
Turn the ignition on.
Measure the voltage of the Left Low Beam Driver circuit.
Is the voltage below 1.0 volt?All
Ye s®Go To 5
No®Repair the Left Low Beam Driver circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Turn the Headlamps off.
Install a substitute Headlamp in place of the Left Headlamp.
Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 6
No®Replace the original Left Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
6 Turn the ignition off.
Inspect the wiring and connectors associated with the Left Low Beam Driver circuit.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
7 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: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
473
EXTERIOR LIGHTING
LEFT LOW BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE Ð
Continued
Symptom:
RIGHT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO GROUND
POSSIBLE CAUSES
FRONT CONTROL MODULE
RIGHT HEADLAMP
RIGHT HIGH BEAM DRIVER CIRCUIT SHORTED TO GROUND
WIRING PROBLEM
WIRING HARNESS INSPECTION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Is this DTC present?All
Ye s®Go To 2
No®Go To 5
2 Turn the ignition off.
Disconnect the Right Headlamp.
Disconnect the Front Control Module from the Intelligent Power Module.
Measure the resistance between Ground and the Right High Beam Driver circuit.
Is the resistance below 100.0 ohms?All
Ye s®Repair the Right High Beam Driver circuit for a short to ground
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
3 Turn the ignition off.
Turn the Headlamps off.
Install a substitute Headlamp Bulb in place of the Right Headlamp Bulb.
Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 4
No®Replace the original Right Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
492
EXTERIOR LIGHTING
TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Right Headlamp harness connector.
Disconnect the Front Control Module.
Turn the ignition on.
Measure the voltage of the Right High Beam Driver circuit.
Is the voltage below 1.0 volt?All
Ye s®Go To 5
No®Repair the Right High Beam Driver circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Turn the Headlamps off.
Install a substitute Headlamp Bulb in place of the Right Headlamp Bulb.
Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 6
No®Replace the original Right Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
6 Turn the ignition off.
Inspect the wiring and connectors associated with the Right High Beam Driver
circuit.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
7 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: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
495
EXTERIOR LIGHTING
RIGHT HIGH BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE Ð
Continued
Symptom:
RIGHT LOW BEAM HEADLAMP CIRCUIT SHORTED TO GROUND
POSSIBLE CAUSES
FRONT CONTROL MODULE
RIGHT HEADLAMP
RIGHT LOW BEAM DRIVER CIRCUIT SHORTED TO GROUND
WIRING PROBLEM
WIRING HARNESS INSPECTION
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Is this DTC present?All
Ye s®Go To 2
No®Go To 5
2 Turn the ignition off.
Disconnect the Right Headlamp.
Disconnect the Front Control Module from the Intelligent Power Module.
Measure the resistance between Ground and the Right Low Beam Driver circuit.
Is the resistance below 100.0 ohms?All
Ye s®Repair the Right Low Beam Driver circuit for a short to ground
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
3 Turn the ignition off.
Turn the Headlamps off.
Install a substitute Headlamp Bulb in place of the Right Headlamp Bulb.
Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 4
No®Replace the original Right Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
498
EXTERIOR LIGHTING
TEST ACTION APPLICABILITY
4 Turn the ignition off.
Disconnect the Right Headlamp harness connector.
Disconnect the Front Control Module.
Turn the ignition on.
Measure the voltage of the Right Low Beam Driver circuit.
Is the voltage below 1.0 volt?All
Ye s®Go To 5
No®Repair the Right Low Beam Driver circuit for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
5 Turn the ignition off.
Turn the Headlamps off.
Install a substitute Headlamp Bulb in place of the Right Headlamp Bulb.
Turn the ignition on.
With the DRB, erase the Front Control Module 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 DRB, read Front Control Module DTC's.
Does the DRB display this DTC?All
Ye s®Go To 6
No®Replace the original Right Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
6 Turn the ignition off.
Inspect the wiring and connectors associated with the Right Low Beam Driver
circuit.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Replace the Front Control Module.
Perform BODY VERIFICATION TEST - VER 1.
7 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: Refer to any Technical Service Bulletins (TSB) that may apply.
Were any problems found?All
Ye s®Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No®Test Complete.
501
EXTERIOR LIGHTING
RIGHT LOW BEAM HEADLAMP CIRCUIT SHORTED TO VOLTAGE Ð
Continued
Symptom:
TURN SIGNAL SWITCH INPUT OPEN
When Monitored and Set Condition:
TURN SIGNAL SWITCH INPUT OPEN
When Monitored: Ignition on.
Set Condition: When voltage is below 4.8 volts.
POSSIBLE CAUSES
INTERMITTENT CONDITION
MULTIFUNCTION SWITCH
TURN SIGNAL SWITCH MUX CIRCUIT OPEN
MULTIFUNCTION SWITCH MUX RETURN CIRCUIT OPEN
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, clear all BCM DTC's.
Actuate the turn signals.
With the DRBIIIt, read the DTC information.
Does the DRBIIItread: Turn Signal Switch Input Open?All
Ye s®Go To 2
No®The condition that caused the symptom is currently not present.
Inspect the related wiring for a possible intermittent condition.
Look for any chafed, pierced,pinched, or partially broken wires.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Multifunction Switch harness connector.
Connect a jumper wire between the Turn Signal Switch MUX circuit and the
Multifunction Switch MUX Return circuit in the Multifunction Switch connector.
Turn the ignition on.
With the DRBIIIt, read the Multifunction Switch voltage.
Is the display voltage below 0.5 volts?All
Ye s®Replace the Multifunction Switch.
Perform BODY VERIFICATION TEST - VER 1.
No®Go To 3
508
EXTERIOR LIGHTING