Dodge Ram Truck 1500-2500-3500. Manual — part 479

*LEFT REAR DOOR FAILS TO LOCK AND UNLOCK (CONTINUED)

2.

INSTRUMENT CLUSTER

Turn the ignition off.

Disconnect the Instrument Cluster C1 connector.

Connect a jumper wire between the (P5) Door Unlock Driver Left Rear
circuit in the Instrument Cluster C1 connector and ground.

Momentarily connect a fused jumper wire between the Fused B+ cir-
cuit and the (P393) Door Lock Driver Left Doors circuit in the Instru-
ment Cluster C1 connector.

Reverse the jumper wires to drive the motor in the opposite direction.

Did the left doors lock and unlock?

Yes

>> Replace the Instrument Cluster.

Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

No

>> Go To 3

3.

(P393) DOOR LOCK DRIVER LEFT DOORS WIRE OPEN

Disconnect the Left Rear Door Latch connector.

Measure the resistance of the (P393) Door Lock Driver Left Doors cir-
cuit between the Instrument Cluster C1 connector and the Door Latch
connector.

Is the resistance below 5.0 ohms?

Yes

>> Go To 4

No

>> Repair the (P393) Door Lock Driver Left Doors wire for an

open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

8N - 58

POWER LOCKS - ELECTRICAL DIAGNOSTICS

DR/DH

*LEFT REAR DOOR FAILS TO LOCK AND UNLOCK (CONTINUED)

4.

(P5) DOOR UNLOCK DRIVER LEFT REAR WIRE OPEN

Measure the resistance of the (P5) Door Unlock Driver Left Rear cir-
cuit between the Instrument Cluster C1 connector and the Door Latch
connector.

Is the resistance below 5.0 ohms?

Yes

>> Replace the Door Latch.

Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

No

>> Repair the (P5) Door Unlock Driver Left Rear wire for an

open.

Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

DR/DH

POWER LOCKS - ELECTRICAL DIAGNOSTICS

8N - 59

*DRIVER DOOR FAILS TO LOCK AND UNLOCK

8N - 60

POWER LOCKS - ELECTRICAL DIAGNOSTICS

DR/DH

*DRIVER DOOR FAILS TO LOCK AND UNLOCK (CONTINUED)

For the Power Door Lock circuit diagram (Refer to 8 - ELECTRICAL/POWER LOCKS - SCHEMATICS AND DIA-
GRAMS)

For a complete wiring diagram Refer to Section 8W.

Possible Causes

DTC PRESENT

(P393) DOOR LOCK DRIVER LEFT DOORS WIRE OPEN

(P1) DOOR UNLOCK DRIVER LEFT FRONT WIRE OPEN

DOOR LATCH

INSTRUMENT CLUSTER

Diagnostic Test

1.

DTC PRESENT

Turn the ignition on.

With the DRBIII

T

, read DTC’s.

Does the DRBIII

T

display any Door Lock related

DTC’s?

Yes

>> Refer to symptom list for problems related

to Power Door Locks and diagnose and
repair DTC’s.

No

>> Go To 2

DR/DH

POWER LOCKS - ELECTRICAL DIAGNOSTICS

8N - 61