Dodge Ram Truck 1500-2500-3500. Manual — part 477

*AUTO (ROLLING) DOOR LOCKS INOPERATIVE (CONTINUED)

3.

ENABLE AUTO DOOR LOCKS

With the DRBIII, enter

9

Electron/Mech Cluster

9

then

9

Miscellaneous

9

and observe the rolling door lock status.

Does the DRBIII display ROLLING DOOR LOCKS: ENABLED

Yes

>> Replace the Instrument Cluster.

Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)

No

>> With the DRBIII, enable the Auto Door Locks.

Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)

8N - 50

POWER LOCKS - ELECTRICAL DIAGNOSTICS

DR/DH

*CYLINDER LOCK SWITCH INOPERATIVE

DR/DH

POWER LOCKS - ELECTRICAL DIAGNOSTICS

8N - 51

*CYLINDER LOCK SWITCH INOPERATIVE (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

(Z463) CYLINDER LOCK SWITCH GROUND OPEN

(G163) CYLINDER LOCK SWITCH MUX CIRCUIT OPEN

(G163) CYLINDER LOCK SWITCH MUX WIRE SHORT TO GROUND

CYLINDER LOCK SWITCH

INSTRUMENT CLUSTER

Diagnostic Test

1.

DTC PRESENT

Turn the ignition on.

With the DRBIII

T

, read DTC’s.

Are there any Power Door Lock related trouble
codes?

Yes

>> Refer to symptom list for problems related

to Power Door Locks.

Perform BODY VERIFICATION TEST -
VER 1. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC

CONTROL

MODULES/FRONT

CONTROL MODULE - DIAGNOSIS AND
TESTING)

No

>> Go To 2

8N - 52

POWER LOCKS - ELECTRICAL DIAGNOSTICS

DR/DH

*CYLINDER LOCK SWITCH INOPERATIVE (CONTINUED)

2.

CYLINDER LOCK SWITCH VOLTAGE LOW

Turn the ignition off.

Disconnect the Cylinder Lock Switch connector.

Turn the ignition on.

Measure the voltage between (G163) Cylinder Lock Switch Mux circuit
and ground.

Is the voltage between 4.6 and 5.2 volts?

Yes

>> Go To 3

No

>> Go To 4

3.

(Z463) CYLINDER LOCK SWITCH GROUND OPEN

Using a 12-volt test light connected to 12-volts, check the (Z463)
Ground circuit.

Does the test light illuminate brightly?

Yes

>> Replace the Cylinder Lock Switch.

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

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

No

>> Repair the (Z463) Ground circuit for an open.

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

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT

CONTROL

MODULE

-

DIAGNOSIS

AND

TESTING)

DR/DH

POWER LOCKS - ELECTRICAL DIAGNOSTICS

8N - 53