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COMMUNICATION
Symptom:
*NO RESPONSE FROM POWER LIFTGATE MODULE
ATTEMPT TO COMMUNICATE WITH THE BCM
FUSED B(+) CIRCUIT OPEN
GROUND CIRCUIT OPEN
PCI BUS CIRCUIT OPEN
BODY CONTROL MODULE - LIFTGATE WAKE UP OUTPUT OPEN
LIFTGATE MODULE WAKE UP SIGNAL CIRCUIT OPEN
LIFTGATE MODULE WAKE UP SIGNAL CIRCUIT SHORT TO GROUND
POWER LIFTGATE MODULE
TEST
1
Turn the ignition on.
With the DRB, enter Body then Body Computer.
NOTE: If communications can be established, check for any liftgate wake up
circuit related DTCs. If any are set, perform those related DTCs before
proceeding.
Was the DRB able to I/D or communicate with the BCM?
Yes → Go To 2
→ Refer to the symptom list for problems related to no communica-
No
2
Turn the ignition off.
Disconnect the Power Liftgate Module C1 harness connector.
Measure the voltage of the Fused B(+) circuit.
Is the voltage above 10.0 volts?
Yes → Go To 3
→ Repair the Fused B(+) circuit for an open.
No
3
Turn the ignition off.
Disconnect the Power Liftgate Module C1 harness connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
Does the test light illuminate brightly?
Yes → Go To 4
→ Repair the Ground circuit for an open.
No
POSSIBLE CAUSES
ACTION
tion with the BCM.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
360
APPLICABILITY
All
All
All
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