Chrysler PT Cruiser. Manual — part 68
Symptom:
*ALL DOOR LOCKS INOPERATIVE
POSSIBLE CAUSES
FUSED B(+) CIRCUIT OPEN
FUSED B(+) WIRE SHORT TO GROUND.
GROUND CIRCUIT OPEN
DOOR LOCK RELAY OUTPUT CIRCUIT OPEN
DRIVER DOOR UNLOCK RELAY OUTPUT SHORT TO THE DOOR LOCK RELAY OUTPUT
DRIVER DOOR UNLOCK RELAY OUTPUT SHORT TO THE DRIVER DOOR LOCK RELAY OUT-
PUT
DRIVER DOOR UNLOCK RELAY OUTPUT WIRE SHORT TO GROUND
DRIVER DOOR LOCK RELAY OUTPUT WIRE SHORT TO GROUND
DOOR LOCK RELAY OUTPUT WIRE SHORT TO GROUND
DOOR UNLOCK RELAY OUTPUT WIRE SHORT TO GROUND
DOOR UNLOCK RELAY OUTPUT SHORT TO DOOR LOCK RELAY OUTPUT
DEFECTIVE FUSE #3
RKE MODULE
RKE MODULE - B(+) SHORT TO GROUND
RKE MODULE - RELAYS OPEN
RKE MODULE - SHORTED
TEST
ACTION
APPLICABILITY
1
NOTE: Ensure there is communication with the RKE module (with the DRB
III select
(Vehicle Theft() before proceeding. If not, refer to the (COMMUNI-
CATION
( category.
Test Fuse #3 in the fuse block.
Is the fuse open?
All
Yes
→ Go To 2
No
→ Go To 13
2
Turn ignition off.
Remove Fuse #3 in the Fuse Block.
Measure the resistance of the Fused B(+) circuit from the fuse output cavity to
ground.
Is the resistance below 100.0 ohms?
All
Yes
→ Go To 3
No
→ Go To 4
259
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
3
Turn ignition off.
Remove Fuse #3 in the Fuse Block.
Disconnect the RKE Module connector.
Measure the resistance of the fused B(+) circuit (cavity #3) in the RKE connector to
ground.
Is the resistance below 100.0 ohms?
All
Yes
→ Repair Fused B(+) wire for a short to ground and replace blown
fuse.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Remote Keyless Entry Module.
Perform BODY VERIFICATION TEST - VER 1.
4
Replace fuse #3
Operate all the door locks several times.
Did the system operate properly without blowing the fuse?
All
Yes
→ Test complete. If Fuse #3 blows again, check with the customer as
to when it blew and rerun this test.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 5
5
Turn ignition off.
Disconnect the Remote Keyless Entry module connector.
Measure the resistance of the Driver Door Unlock Relay Output circuit in the RKE
module connector to ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Driver Door Unlock Relay Output wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 6
6
NOTE: If this vehicle is a PT 27 (convertible) answer No to the question and
continue.
Turn ignition off.
Disconnect the Remote Keyless Entry module connector.
Measure the resistance of the Driver Door Lock Relay Output circuit in the RKE
module connector to ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Driver Door Lock Relay Output wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 7
7
Disconnect the Remote Keyless Entry module connector.
Measure the resistance of the Door Lock Relay Output circuit in the RKE module
connector to ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Door Lock Relay Output wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 8
260
POWER DOOR LOCKS/RKE
*ALL DOOR LOCKS INOPERATIVE —
Continued
TEST
ACTION
APPLICABILITY
8
Turn ignition off.
Disconnect the Remote Keyless Entry module connector.
Measure the resistance of the Door Unlock Relay Output circuit in the RKE module
connector to ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Door Unlock Relay Output wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 9
9
Disconnect the Remote Keyless Entry module connector.
Measure the resistance between the Door Unlock Relay Output circuit and the Door
Lock Relay Output in the RKE module connector..
Is the resistance below 1.5 ohms?
All
Yes
→ Repair the Door Unlock Relay Output circuit for a short to the
Door Lock Relay Output circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 10
10
IS THIS VEHICLE A PT27 (CONVERTIBLE)?
All
Yes
→ Go To 11
No
→ Go To 12
11
Disconnect the Remote Keyless Entry module connector.
Measure the resistance between the Driver Door Unlock Relay Output circuit and the
Door Lock Relay Output circuit in the RKE module connector..
Is the resistance below 3.0 ohms?
All
Yes
→ Repair the Driver Door Unlock Relay Output circuit for a short to
the Door Lock Relay Output circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Remote Keyless Entry Module and replace the fuse.
Perform BODY VERIFICATION TEST - VER 1.
12
Disconnect the Remote Keyless Entry module connector.
Measure the resistance between the Driver Door Unlock Relay Output circuit and the
Driver Door Lock Relay Output circuit in the RKE module connector..
Is the resistance below 3.0 ohms?
All
Yes
→ Repair the Driver Door Unlock Relay Output circuit for a short to
the Driver Door Lock Relay Output circuit.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Remote Keyless Entry Module and replace the fuse.
Perform BODY VERIFICATION TEST - VER 1.
261
POWER DOOR LOCKS/RKE
*ALL DOOR LOCKS INOPERATIVE —
Continued
TEST
ACTION
APPLICABILITY
13
Disconnect the RKE Module connector.
Using a test light connected to ground, test both sides of Fuse #3 to ensure the fuse
is Okay and that the 12.0 volt supply is not open.
Measure the voltage of the Fused B(+) circuit (cavity #3) in the RKE Module
connector.
Is the voltage above 10.0 volts?
All
Yes
→ Go To 14
No
→ Repair the open Fused B(+) wire from the RKE Module connector
to the fuse.
Perform BODY VERIFICATION TEST - VER 1.
14
Turn ignition off.
Disconnect the RKE Module connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit (cavity #8)
in the RKE Module connector.
Does the test light illuminate brightly?
All
Yes
→ Go To 15
No
→ Repair the open ground circuit.
Perform BODY VERIFICATION TEST - VER 1.
15
Disconnect the Remote Keyless Entry module connector.
Measure the resistance between the Door Unlock Relay Output circuit and the Door
Lock Relay Output circuit in the RKE module connector..
Is the resistance LESS than 7.0 ohms?
All
Yes
→ Go To 16
No
→ Repair the open Door Lock Relay Output circuit.
Perform BODY VERIFICATION TEST - VER 1.
16
If there are no possible causes remaining, view repair.
All
Repair
Replace the Remote Keyless Entry Module (relays open).
Perform BODY VERIFICATION TEST - VER 1.
262
POWER DOOR LOCKS/RKE
*ALL DOOR LOCKS INOPERATIVE —
Continued
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