Dodge Ram. Manual — part 122
Symptom List:
*CYLINDER LOCK SWITCH INOPERATIVE
*CYLINDER LOCK SWITCH WILL NOT ARM AND/OR DISARM
ALARM
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be *CYLINDER LOCK SWITCH
INOPERATIVE.
POSSIBLE CAUSES
DTC PRESENT
CYLINDER LOCK SWITCH GROUND OPEN
CYLINDER LOCK SWITCH MUX CIRCUIT OPEN
CYLINDER LOCK SWITCH OPEN
INSTRUMENT CLUSTER - OPEN
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read DTC’s.
Are there any Power Door Lock related trouble codes?
All
Yes
→ Refer to symptom list for problems related to Power Door Locks.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Disconnect the Cylinder Lock Switch connector.
Measure the voltage between Cylinder Lock Switch Mux circuit and ground.
Is the voltage between 4.6 and 5.2 volts?
All
Yes
→ Go To 3
No
→ Go To 4
3
Disconnect the Cylinder Lock Switch connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
Does the test light illuminate brightly?
All
Yes
→ Replace the Cylinder Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
485
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
4
Disconnect the Cylinder Lock Switch connector.
Disconnect the Instrument Cluster C2 connector.
Measure the resistance of the Cylinder Lock Switch Mux circuit between the Switch
connector and the Instrument Cluster connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Repair the Cylinder Lock Switch Mux circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
486
POWER DOOR LOCKS/RKE
*CYLINDER LOCK SWITCH INOPERATIVE —
Continued
Symptom:
*DOOR LOCK INHIBIT INOPERATIVE
POSSIBLE CAUSES
CHIME INOPERATIVE
INSTRUMENT CLUSTER - DOOR LOCK INHIBIT INOPERATIVE
TEST
ACTION
APPLICABILITY
1
Turn the ignition off but leave the key in the ignition switch.
Open the drivers door.
Does the chime sound?
All
Yes
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Refer to symptom CHIME INOPERATIVE WITH KEY-IN IGNI-
TION AND DRIVER DOOR OPEN in the CHIME category.
Perform BODY VERIFICATION TEST - VER 1.
487
POWER DOOR LOCKS/RKE
Symptom:
*LEFT DOORS FAIL TO LOCK AND UNLOCK - QUAD CAB
POSSIBLE CAUSES
DTC PRESENT
INSTRUMENT CLUSTER - DOOR LOCK DRIVER LEFT DOORS OPEN
DOOR UNLOCK DRIVER LEFT DOORS WIRE OPEN
DOOR LOCK DRIVER LEFT DOORS WIRE OPEN
DOOR LOCK MOTOR
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, read DTC’s.
Does the DRBIII
t display any Door Lock related DTC’s?
All
Yes
→ Refer to symptom list for problems related to Power Door Locks.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 2
2
Turn the ignition off.
Disconnect the Instrument Cluster C1 connector.
Connect a jumper wire between the Door Unlock Driver Left Doors circuit in the
Instrument Cluster C1 connector and ground.
Momentarily connect a fused jumper wire between the Fused B+ circuit and the Door
Lock Driver Left Doors circuit in the Instrument Cluster C1 connector.
Reverse the jumper wires to drive the motors in the opposite direction.
Did the left doors lock and unlock?
All
Yes
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Turn the ignition off.
Disconnect the Instrument Cluster C1 connector.
Disconnect a left side Door Lock Motor/Ajar Switch connector.
Measure the resistance of the Door Lock Driver Left Doors circuit between the
Instrument Cluster C1 connector and the Door Lock Motor connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 4
No
→ Repair the Door Lock Driver Left Doors wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
4
Turn the ignition off.
Disconnect the Instrument Cluster C1 connector.
Disconnect a left side Door Lock Motor/Ajar Switch connector.
Measure the resistance of the Door Unlock Driver Left Doors circuit between the
Instrument Cluster C1 connector and the Door Lock Motor connector.
Is the resistance below 5.0 ohms?
All
Yes
→ Go To 5
No
→ Repair the Door Unlock Driver Left Doors wire for an open.
Perform BODY VERIFICATION TEST - VER 1.
488
POWER DOOR LOCKS/RKE
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