Chrysler Pacifica. Manual — part 121
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Disconnect the Left Headlamp harness connector.
Using a 12-volt test light connected to ground, check the Left Low Beam Driver
circuit in the Left Headlamp harness connector.
NOTE: The test light must illuminate brightly. Compare the brightness to
that of a direct connection to the battery.
Turn the low beam headlamps on.
Does the test light illuminate brightly?
All
Yes
→ Replace the Left Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Integrated Power Module.
Perform BODY VERIFICATION TEST - VER 1.
5
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
Yes
→ Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
481
EXTERIOR LIGHTING
LEFT HEADLAMP LOW BEAM OPEN-IPM —
Continued
Symptom:
LEFT HEADLAMP LOW BEAM SHORT TO GROUND-IPM
When Monitored and Set Condition:
LEFT HEADLAMP LOW BEAM SHORT TO GROUND-IPM
When Monitored:
Output is ON.
Set Condition:
The IPM detects a short fault condition. Time to set is 1 second.
POSSIBLE CAUSES
INTEGRATED POWER 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 DRBIII
t, 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 DRBIII
t, read IPM DTC’s.
Is this DTC present?
All
Yes
→ Go To 3
No
→ Go To 2
2
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
Yes
→ Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Left Headlamp.
Disconnect the Intelligent Power Module C5 harness connector.
Measure the resistance between Ground and the Left Low Beam Driver circuit.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair the Left Low Beam Driver circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
482
EXTERIOR LIGHTING
TEST
ACTION
APPLICABILITY
4
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 DRBIII
t, 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 DRBIII
t, read IPM DTC’s.
Does the DRBIII
t display this DTC?
All
Yes
→ Go To 5
No
→ Replace the original Left Headlamp Bulb.
Perform BODY VERIFICATION TEST - VER 1.
5
Turn the ignition off.
Inspect the wiring and connectors associated with the Left Low Beam Driver circuit.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Integrated Power Module.
Perform BODY VERIFICATION TEST - VER 1.
483
EXTERIOR LIGHTING
LEFT HEADLAMP LOW BEAM SHORT TO GROUND-IPM —
Continued
Symptom:
LEFT REAR PARK/MARKER LAMP OPEN-IPM
When Monitored and Set Condition:
LEFT REAR PARK/MARKER LAMP OPEN-IPM
When Monitored:
The output is OFF.
Set Condition:
The IPM detects an open fault condition. Time to set is 1 second.
POSSIBLE CAUSES
GROUND CIRCUIT OPEN
INTEGRATED POWER MODULE
LEFT REAR PARK LAMP
LEFT TAIL LAMP DRIVER OPEN
WIRING HARNESS INSPECTION
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, erase the IPM DTC’s.
Turn the Park Lamps on.
With the DRB, read the IPM DTC’s.
Does the DRBIII
t read: Left Rear Park/Marker Lamp Open?
All
Yes
→ Go To 2
No
→ Go To 5
2
Turn the ignition off.
Disconnect the Left Rear Park Lamp harness connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
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?
All
Yes
→ Go To 3
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Left Rear Park Lamp.
Disconnect the IPM C9 harness connector.
Measure the resistance of the Left Tail Lamp Driver circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Left Tail Lamp Driver circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
484
EXTERIOR LIGHTING
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