Chrysler Pacifica. Manual — part 194
Symptom List:
REAR DISPLAY COMMUNICATION FAULT
REAR DISPLAY LED OR SPEAKER FAULT
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be REAR DISPLAY COMMUNICA-
TION FAULT.
When Monitored and Set Condition:
REAR DISPLAY COMMUNICATION FAULT
When Monitored:
With the ignition on.
Set Condition:
A data line or communication fault is detected.
REAR DISPLAY LED OR SPEAKER FAULT
When Monitored:
With the ignition on.
Set Condition:
Negative self-diagnostic for LED/speaker.
POSSIBLE CAUSES
INTERMITTENT CONDITION
PARK ASSIST DISPLAY SIGNAL CIRCUIT SHORT TO GROUND
PARK ASSIST DISPLAY CIRCUIT(S) OPEN
PARK ASSIST DISPLAY CIRCUIT(S) SHORT TO VOLTAGE
PARK ASSIST MODULE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, Erase DTCs.
Cycle the ignition off for at least 1 minute.
Turn the ignition on.
With the DRBIII
t under System Tests, perform the Self Test.
With the DRBIII
t read DTCs.
Does this DTC reset?
All
Yes
→ Go To 2
No
→ Go To 6
773
PARK ASSIST SYSTEM
TEST
ACTION
APPLICABILITY
2
Turn the ignition off.
Disconnect the Park Assist Display harness connector.
Disconnect the Park Assist Module harness connector.
Measure the resistance between ground and the Park Assist Display Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Park Assist Display Signal circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Park Assist Display harness connector.
Disconnect the Park Assist Module harness connector.
Measure the resistance of the Park Assist Display Signal circuit.
Measure the resistance of the Park Assist Display Supply circuit.
Measure the resistance of the Ground circuit.
Is the resistance above 5.0 ohms for any circuit(s)?
All
Yes
→ Repair the circuit(s) for an open.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the Park Assist Display harness connector.
Disconnect the Park Assist Module harness connector.
Turn the ignition on.
Measure the voltage of the Park Assist Display Signal circuit.
Measure the voltage of the Park Assist Display Supply circuit.
Measure the voltage of the Ground circuit.
Is there voltage present on any of these circuits?
All
Yes
→ Repair the circuit(s) for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Replace the Park Assist Display in accordance with the Service Information.
Turn the ignition on.
With the DRBIII
t, Erase DTCs.
With the DRBIII
t under System Tests, perform the Self Test.
With the DRBIII
t read DTCs.
Does this DTC reset.
All
Yes
→ Replace the Park Assist Module in accordance with the Service
Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
774
PARK ASSIST SYSTEM
REAR DISPLAY COMMUNICATION FAULT —
Continued
TEST
ACTION
APPLICABILITY
6
The conditions necessary to set this DTC are not present at this time.
Using the wiring diagrams/schematics as a guide, inspect the wiring and connectors.
While monitoring the DRBIII
t data relative to this circuit, wiggle test the wiring and
connectors.
Look for the data to change or for the DTC to reset during the wiggle test.
Were any problems found?
All
Yes
→ Repair as necessary.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
775
PARK ASSIST SYSTEM
REAR DISPLAY COMMUNICATION FAULT —
Continued
Symptom List:
SENSOR 1 FAILURE
SENSOR 2 FAILURE
SENSOR 3 FAILURE
SENSOR 4 FAILURE
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be SENSOR 1 FAILURE.
When Monitored and Set Condition:
SENSOR 1 FAILURE
When Monitored:
With rear sensors active.
Set Condition:
A Sensor Settling Time failure or a Sensor Verify failure is detected.
SENSOR 2 FAILURE
When Monitored:
With rear sensors active.
Set Condition:
A Sensor Settling Time failure or a Sensor Verify failure is detected.
SENSOR 3 FAILURE
When Monitored:
With rear sensors active.
Set Condition:
A Sensor Settling Time failure or a Sensor Verify failure is detected.
SENSOR 4 FAILURE
When Monitored:
With rear sensors active.
Set Condition:
A Sensor Settling Time failure or a Sensor Verify failure is detected.
POSSIBLE CAUSES
INTERMITTENT CONDITION
PARK ASSIST SENSOR
PARK ASSIST MODULE
776
PARK ASSIST SYSTEM
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