Chrysler Pacifica. Manual — part 189
Symptom:
EC MIRROR DAY/NIGHT LINE FAULT
When Monitored and Set Condition:
EC MIRROR DAY/NIGHT LINE FAULT
When Monitored:
With the ignition on.
Set Condition:
The Overhead Console does not receive any messages from the EC Mirror.
POSSIBLE CAUSES
INTERMITTENT CONDITION
AUTOMATIC DAY/NIGHT MIRROR
AUTOMATIC HEADLAMP SIGNAL CIRCUIT OPEN
AUTOMATIC HEADLAMP SIGNAL CIRCUIT SHORTED TO GROUND
AUTOMATIC HEADLAMP SIGNAL CIRCUIT SHORTED TO VOLTAGE
OVERHEAD CONSOLE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, erase the DTC.
Cycle the ignition on and off several times, leaving the ignition on for at least 15
seconds.
With the DRBIII
t, read DTCs.
Did the DTC reset?
All
Yes
→ Go To 2
No
→ The condition is not present at this time. Monitor DRBIIIt
parameters while wiggling the related wire harness. Refer to any
Technical Service Bulletins (TSB) that may apply. Visually in-
spect the related wiring harness and connector terminals.
Perform BODY VERIFICATION TEST - VER 1.
2
Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connector.
Turn the ignition on.
Measure the voltage of the Automatic Headlamp Signal circuit in the Automatic
Day/Night Mirror harness connector.
Is the voltage 4.9 volts?
All
Yes
→ Replace the Automatic Day/Night Mirror in accordance with the
Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
753
OVERHEAD CONSOLE
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Overhead Console harness connector.
Disconnect the Automatic Day/Night Mirror harness connector.
Measure the resistance of the Automatic Headlamp Signal circuit between the
Automatic Day/Night Mirror harness connector and the Overhead Console harness
connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Automatic Headlamp Signal circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Overhead Console harness connector.
Disconnect the Automatic Day/Night Mirror harness connector.
Measure the resistance of the Automatic Headlamp Signal circuit in the Overhead
Console harness connector to ground.
Is the resistance below 5.0 ohms?
All
Yes
→ Repair the Automatic Headlamp Signal circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn the ignition off.
Disconnect the Automatic Day/Night Mirror harness connector.
Disconnect the Overhead Console harness connector.
Using a 12 volt test light connected to ground, probe the Automatic Headlamp Signal
circuit in the Automatic Day/Night Mirror harness connector.
Does the test illuminate brightly?
All
Yes
→ Repair the Automatic Headlamp Signal circuit for a shorted to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Overhead Console in accordance with the service
information
Perform BODY VERIFICATION TEST - VER 1.
754
OVERHEAD CONSOLE
EC MIRROR DAY/NIGHT LINE FAULT —
Continued
Symptom List:
INTERNAL MODULE FAILURE
LOOPBACK FAILURE
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be INTERNAL MODULE FAILURE.
When Monitored and Set Condition:
INTERNAL MODULE FAILURE
When Monitored:
During power-up each ignition cycle.
Set Condition:
The OHC fails the module internal circuitry self test.
LOOPBACK FAILURE
When Monitored:
During power-up each ignition cycle.
Set Condition:
The OHC fails the internal PCI bus loop-back test.
POSSIBLE CAUSES
OVERHEAD CONSOLE
TEST
ACTION
APPLICABILITY
1
When this code is set, view repair.
All
Repair
Replace and program the Overhead Console Module in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
755
OVERHEAD CONSOLE
Symptom:
MIC MESSAGES NOT RECEIVED
When Monitored and Set Condition:
MIC MESSAGES NOT RECEIVED
When Monitored:
With the ignition on.
Set Condition:
This DTC will set if the OHC does not receive PCI bus messages from the
MIC for 5 seconds.
POSSIBLE CAUSES
COMMUNICATION DTC PRESENT
OVERHEAD CONSOLE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, attempt to communicate with the MIC.
Was the DRBIII
t able to communicate with the MIC?
All
Yes
→ With the DRBIIIt, erase DTCs. Turn the ignition off, wait 10
seconds, then turn the ignition on. With the DRBIII
t, read DTCs.
If this code resets, replace the Overhead Console in accordance
with the Service Information.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to COMMUNICATION for the related symptom(s).
Perform BODY VERIFICATION TEST - VER 1.
756
OVERHEAD CONSOLE
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