Jeep Liberty KJ. Manual — part 156
Possible Causes
(P34) DRIVER DOOR UNLOCK RELAY OUTPUT CIRCUIT SHORT TO GROUND
DRIVER DOOR UNLOCK RELAY
Diagnostic Test
1.
DTC’S PRESENT
With the scan tool, read DTCs.
Are there any Power Door Lock related codes present?
Yes
>> Refer to symptom list for problems related to POWER DOOR LOCKS/RKE.
No
>> Go To 2
2.
CHECK DRIVER DOOR UNLOCK RELAY
Install a substitute relay in place of the Driver Door Unlock relay in the
Junction Block.
Lower the driver window.
Remove the key from the ignition switch.
Operate the door lock switch to lock and unlock positions several times.
Did the Driver Door Lock and Unlock?
Yes
>> Replace the Driver Door Unlock Relay.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
Yes
>> Go To 3
8N - 46
POWER LOCKS - ELECTRICAL DIAGNOSTICS
KJ
3.
CHECK (P34) DRIVER DOOR UNLOCK RELAY OUTPUT FOR A SHORT TO GROUND
Remove the Driver Door Unlock relay from the Junction Block.
Remove the Driver Door inner trim panel and disconnect the Driver
Door Lock Motor connector.
Measure the resistance between ground and the (P34) Driver Door
Unlock Relay Output circuit in the Door Lock Motor connector.
Is the resistance below 1000.0 ohms?
Yes
>> Repair the (P34) Driver Door Unlock Relay Output circuit for
a short to ground.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Test complete.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
KJ
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 47
*FLIP-UP GLASS RELEASE INOPERATIVE
For a complete wiring diagram Refer to Section 8W.
8N - 48
POWER LOCKS - ELECTRICAL DIAGNOSTICS
KJ
Possible Causes
G910 TAILGATE SWITCH GROUND OPEN
RELEASE MOTOR GROUND CIRCUIT OPEN
P100 FLIP-UP GLASS RELEASE MOTOR DRIVER WIRE OPEN
P101 FLIP-UP GLASS RELEASE SWITCH SENSE OPEN
FLIP-UP GLASS RELEASE MOTOR
FLIP-UP GLASS RELEASE SWITCH
BODY CONTROL MODULE - FLIP-UP GLASS RELEASE MOTOR DRIVER OPEN
BODY CONTROL MODULE - FLIP-UP GLASS RELEASE SWITCH SENSE OPEN
Diagnostic Test
1.
WARNING: TEST RELEASE SWITCH
With the scan tool in Inputs/Outputs, read the FLIP-UP GLASS REL SW state.
Observe the scan tool and move the tailgate handle from open to closed positions.
Does the scan tool display OPEN then CLOSED as the handle is moved?
Yes
>> Go to 2
No
>> Go to 5
2.
CHECK FLIP-UP GLASS RELEASE MOTOR
Disconnect the Flip-Up Glass Release Motor connector.
Connect a 12-volt test light between the (P100) Flip-Up Glass Release
Motor Driver circuit and the (Z213) Ground circuit in the motor connec-
tor.
With the scan tool actuate the RELEASE FLIP-UP GLASS.
Does the test light illuminate brightly when the motor is actu-
ated?
Yes
>> Replace the Flip-Up Glass Release Motor.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Go To 3
KJ
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 49
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