Jeep Liberty KJ. Manual — part 154
Possible Causes
(P35) DOOR UNLOCK RELAY OUTPUT CIRCUIT OPEN
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.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
No
>> Go To 2
2.
CHECK (P35) DOOR UNLOCK RELAY OUTPUT CIRCUIT OPEN
Turn the ignition off.
Remove the Door Unlock Relay from the Junction Block.
Using a 12-volt test light connected to ground, check the (P35) Door
Unlock Relay Output circuit (cavity 30) in the relay connector.
Turn the ignition on.
With the scan tool, actuate the Door Locks (relay).
Does the test light illuminate brightly when the relay is actu-
ated?
Yes
>> Replace the Door Unlock Relay.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
No
>> Repair the (P35) Door Unlock Relay Output circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
8N - 38
POWER LOCKS - ELECTRICAL DIAGNOSTICS
KJ
*ALL PASSENGER DOORS FAIL TO UNLOCK
For a complete wiring diagram Refer to Section 8W.
KJ
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 39
Possible Causes
(P35) DOOR UNLOCK RELAY OUTPUT CIRCUIT SHORT TO GROUND
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.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
No
>> Go To 2
2.
CHECK (P35) DOOR UNLOCK RELAY OUTPUT FOR SHORT TO GROUND
Turn the ignition off.
Remove the Door Lock, the Door Unlock and the Driver Door Unlock
Relays from the Junction Block.
Measure the resistance between ground and the (P35) Door Unlock
Relay Output circuit (cavity 30) in the Door Unlock Relay connector.
Is the resistance below 1000.0 ohms?
No
>> Replace the Door Unlock Relay.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 -
ELECTRICAL/ELECTRONIC
CONTROL
MODULES
-
STANDARD PROCEDURE)
Yes
>> Repair the (P35) 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)
8N - 40
POWER LOCKS - ELECTRICAL DIAGNOSTICS
KJ
*AUTO DOOR LOCKS INOPERATIVE
For a complete wiring diagram Refer to Section 8W.
Possible Causes
AUTO (ROLLING) DOOR LOCKS NOT ENABLED
DOOR AJAR STATUS
PCM DTC’S PRESENT
BODY CONTROL MODULE - AUTO LOCKS INOPERATIVE
Diagnostic Test
1.
READ AUTO DOOR LOCK STATUS ON SCAN TOOL
With the scan tool select:
9
Body Controller
9
,
9
Miscellaneous
9
,
9
Auto Door Locks
9
Does the scan tool show
(
Auto Door Locks: ENABLED
(
?
Yes
>> Go To 2
No
>> With the scan tool, enable the Auto (Rolling) Door Locks, open and close the driver door at least once
and retest the System.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
2.
CHECK DOOR AJAR STATES
Ensure all doors are closed.
With the scan tool read all DOOR AJAR states
Do any door ajar states show CLOSED?
Yes
>> Refer to symptom list for problems related to DOOR AJAR.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
No
>> Go To 3
3.
CHECK FOR PCM DTC’s
With the scan tool read
9
Engine
9
DTC’s.
Are there any TPS DTC’s present?
Yes
>> Refer to symptom list for problems related to DRIVEABILITY..
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
No
>> Replace the Body Control Module in accordance with service information.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE)
KJ
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 41
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