Chrysler PT Cruiser. Manual — part 69
Symptom:
*ALL DOORS FAIL TO LOCK
POSSIBLE CAUSES
DOOR LOCK RELAY OUTPUT CIRCUIT SHORT TO GROUND
REMOTE KEYLESS ENTRY MODULE - LOCK RELAY
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Remote Keyless Entry module connector.
Measure the resistance between ground and the Door Lock Relay Output circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Door Lock Relay Output circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Remote Keyless Entry Module.
Perform BODY VERIFICATION TEST - VER 1.
263
POWER DOOR LOCKS/RKE
Symptom:
*ALL DOORS FAIL TO UNLOCK
POSSIBLE CAUSES
DOOR UNLOCK RELAY OUTPUT CIRCUIT SHORT TO GROUND
REMOTE KEYLESS ENTRY MODULE - UNLOCK RELAY
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Disconnect the Remote Keyless Entry module connector.
Measure the resistance between ground and the Door Unlock Relay Output circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Door Unlock Relay Output circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Remote Keyless Entry Module.
Perform BODY VERIFICATION TEST - VER 1.
264
POWER DOOR LOCKS/RKE
Symptom:
*ALL LOCKS INOPERATIVE FROM ONE LOCK SWITCH
POSSIBLE CAUSES
DOOR LOCK SWITCH - SHORT TO GROUND
DOOR SWITCH GROUND WIRE OPEN
DOOR SWITCH MUX WIRE SHORT TO VOLTAGE
CYLINDER LOCK SWITCH SHORT TO GROUND
DOOR SWITCH MUX WIRE OPEN
DOOR LOCK SWITCH - OPEN
DOOR SWITCH MUX WIRE SHORT TO GROUND
REMOTE KEYLESS ENTRY MODULE - HIGH VOLTAGE
REMOTE KEYLESS ENTRY MODULE - LOW VOLTAGE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t in Sensors, read the appropriate DOOR LOCK SW voltage..
Select the reading found:
All
Between 0.0 and 3.7 volts.
Between 4.9 and 5.5 volts.
Above 5.6 volts.
2
Turn the ignition off.
Disconnect the Remote Keyless Entry Module connector.
Measure the resistance between ground and the appropriate Door Switch Mux
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Go To 3
No
→ Replace the Remote Keyless Entry module.
Perform BODY VERIFICATION TEST - VER 1.
3
Turn the ignition off.
Disconnect the Remote Keyless Entry Module connector.
Disconnect the Door Lock Switch connector.
Measure the resistance between ground and the Door Switch Mux circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Go To 4
No
→ Replace the Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
265
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
4
NOTE: If this vehicle is not equipped with Cylinder Lock Switches answer YES to the
question..
Turn the ignition off.
Disconnect the Remote Keyless Entry Module connector.
Disconnect the Cylinder Lock Switch connector.
Measure the resistance between ground and the Door Switch Mux circuit.
Is the resistance below 1000.0 ohms?
All
No
→ Replace the Cylinder Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
Yes
→ Go To 5
5
If there are no possible causes remaining, view repair.
All
Repair
Repair the Door Switch Mux wire for a short to ground.
Perform BODY VERIFICATION TEST - VER 1.
6
Turn the ignition off.
Disconnect the Door Lock Switch connector.
Measure the resistance between ground and the Ground circuit in the appropriate
Door Lock Switch connector..
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 7
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
7
Turn the ignition off.
Disconnect the Remote Keyless Entry Module connector.
Disconnect the Door Lock Switch connector.
Measure the resistance of the appropriate Door Switch Mux circuit between the RKE
connector and the Door Lock Switch connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 8
No
→ Repair the Door Switch Mux wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
8
If there are no possible causes remaining, view repair.
All
Repair
Replace the Door Lock Switch - open resistor.
Perform BODY VERIFICATION TEST - VER 1.
9
Turn the ignition off.
Disconnect the Remote Keyless Entry Module connector.
Disconnect the Door Lock Switch connector.
Measure the voltage between the appropriate Door Switch Mux circuit and ground.
Is there any voltage present?
All
Yes
→ Repair the Door Switch Mux wire for a short to voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Remote Keyless Entry module.
Perform BODY VERIFICATION TEST - VER 1.
266
POWER DOOR LOCKS/RKE
*ALL LOCKS INOPERATIVE FROM ONE LOCK SWITCH —
Continued
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