Jeep Liberty KJ. Manual — part 122
*RIGHT FRONT DOOR AJAR CIRCUIT OPEN
For a complete wiring diagram Refer to Section 8W.
8L - 146
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
KJ
Theory of Operation
The scan tool will display the door state NOT the switch state. It will display as True/False. True states that the door
is ajar (open). False states that the door is NOT ajar (closed).
Possible Causes
RIGHT FRONT DOOR AJAR SWITCH GROUND CIRCUIT OPEN
(G74) RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT OPEN
DOOR LOCK MOTOR/AJAR SWITCH
BODY CONTROL MODULE
Diagnostic Test
1.
OPEN RIGHT FRONT DOOR AJAR SWITCH GROUND CIRCUIT
Disconnect the Right Front Door Lock Motor/Ajar switch connector.
Using a 12-volt Test Light connected to 12-volts, test the Ground circuit.
Does the test light illuminate brightly?
Yes
>> Go To 2
No
>> Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
2.
CHECK FOR OPEN RIGHT FRONT DOOR AJAR SWITCH
With the scan tool in Data Display, read the LEFT FRONT DOOR AJAR
SW state.
NOTE: For the Right Front Door Ajar state the scan tool will read
“DRIVER” for RHD.
Connect a jumper wire between Sense circuit and the Ground circuit.
Does the scan tool display LEFT FRONT DOOR AJAR SW:
TRUE?
Yes
>> Replace the Door Lock Motor/Ajar Switch.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Go To 3
KJ
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
8L - 147
3.
CHECK FOR OPEN (G74) RIGHT FRONT DOOR AJAR SWITCH SENSE CIRCUIT
Turn the ignition off.
Leave the jumper wire from the previous step connected.
Disconnect the Body Control Module C1 harness connector.
Measure the resistance between ground and the (G74) Right Front
Door Ajar Switch Sense circuit in the BCM C1 connector.
Is the resistance below 5.0 ohms?
Yes
>> Replace the Body Control Module in accordance with ser-
vice information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Repair the (G74) Right Front Door Ajar Switch Sense circuit
for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
8L - 148
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
KJ
*RIGHT FRONT DOOR AJAR CIRCUIT SHORT TO GROUND
For a complete wiring diagram Refer to Section 8W.
KJ
LAMPS/LIGHTING - INTERIOR - ELECTRICAL DIAGNOSTICS
8L - 149
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