Chrysler Pacifica. Manual — part 220
Symptom:
LOSS OF BCM MESSAGES
When Monitored and Set Condition:
LOSS OF BCM MESSAGES
When Monitored:
Whenever the ignition is on.
Set Condition:
If the PLG Module losses communication with the BCM for over 5 seconds,
this code will set.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BODY CONTROL MODULE
POWER LIFTGATE MODULE - LOSS OF BCM MESSAGES
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, enter 9Body9 then 9Body Computer9.
Was the DRBIII
t able to I/D or communicate with the BCM?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(s).
2
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
877
POWER DOORS - LIFTGATE
Symptom:
LOSS OF PCM MESSAGES
When Monitored and Set Condition:
LOSS OF PCM MESSAGES
When Monitored:
Whenever the ignition is in the RUN position.
Set Condition:
If the PLG Module does not receive a speed message from the Powertrain
Control Module for over 5 seconds, this code will set.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE POWERTRAIN CONTROL MODULE
POWER LIFTGATE MODULE - LOSS OF PCM MESSAGES
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, select Engine.
Was the DRBIII
t able to I/D or communicate with the Powertrain Control Module?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(S).
2
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
878
POWER DOORS - LIFTGATE
Symptom:
LOSS OF TCM MESSAGES
When Monitored and Set Condition:
LOSS OF TCM MESSAGES
When Monitored:
Whenever the ignition is in the UNLOCK or RUN position.
Set Condition:
If the PLG Module does not receive a PRNDL message for over 5 seconds,
this code will set.
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE TRANSMISSION CONTROL MODULE
POWER LIFTGATE MODULE - LOSS OF TCM MESSAGES
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t select Transmission.
Was the DRBIII
t able to I/D or communicate with the Transmission?
All
Yes
→ Go To 2
No
→ Refer to the Communication category for the related symptom(S).
2
With the DRBIII
t, erase DTC’s.
Cycle the ignition switch from off to on and wait approximately 1 minute.
With the DRBIII
t, read DTC’s.
Did this DTC reset?
All
Yes
→ Replace the Power Liftgate Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
879
POWER DOORS - LIFTGATE
Symptom:
OUTSIDE LIFTGATE HANDLE INPUT SHORT - BCM
When Monitored and Set Condition:
OUTSIDE LIFTGATE HANDLE INPUT SHORT - BCM
When Monitored:
Whenever the Body Control Module is awake.
Set Condition:
When the BCM senses a voltage of less than 1.0 volts on the Liftgate
Handle Switch Sense circuit for longer than 10 seconds this code will set.
POSSIBLE CAUSES
LIFTGATE HANDLE SWITCH SHORTED
LIFTGATE HANDLE SWITCH SENSE CIRCUIT SHORT TO GROUND
BODY CONTROL MODULE - LIFTGATE HANDLE SWITCH SHORT TO GROUND
TEST
ACTION
APPLICABILITY
1
Disconnect the License Lamp connector (light bar).
With the DRBIII
t, read DTC’s.
Does the DRBIII
t display OUTSIDE LIFTGATE HANDLE SWITCH SHORT??
All
Yes
→ Go To 2
No
→ Replace the Liftgate Handle Switch.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the License Lamp connector.
Disconnect the Body Control Module C2 connector.
Measure the resistance between ground and the Liftgate Handle Switch Sense
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Liftgate Handle Switch Sense circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
If there are no possible causes remaining, view repair.
All
Repair
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
880
POWER DOORS - LIFTGATE
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