Dodge Ram Truck 1500-2500-3500. Manual — part 472

DRIVER DOOR LOCK SWITCH INPUT CIRCUIT STUCK

8N - 30

POWER LOCKS - ELECTRICAL DIAGNOSTICS

DR/DH

DRIVER DOOR LOCK SWITCH INPUT CIRCUIT STUCK (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.

•

When Monitored:
At all times when battery power is supplied to the Instrument Cluster.

•

Set Condition:
When the Instrument Cluster senses voltage to the driver door lock switch between 1.3 and 3.75 volts for over
20 seconds, this code will set.

Possible Causes

(G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT PARTIALLY SHORTED TO GROUND

DOOR LOCK SWITCH SHORTED

INSTRUMENT CLUSTER

Diagnostic Test

1.

DTC PRESENT

Turn the ignition on.

With the DRBIII

T

, record and erase DTC’s.

With the DRBIII

T

, read DTC’s.

Operate the door locks several times from the Driver
Door Lock Switch while monitoring the DRBIII

T

.

Does the DRBIII

T

display DRIVER DOOR LOCK

SWITCH INPUT CIRCUIT STUCK?

Yes

>> Go To 2

No

>> Using the wiring diagram/schematic as a

guide, inspect the wiring and connectors.
Operate the switch several times and
check for an occasional sticking problem.

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

CONTROL

MODULES/FRONT

CONTROL MODULE - DIAGNOSIS AND
TESTING)

DR/DH

POWER LOCKS - ELECTRICAL DIAGNOSTICS

8N - 31

DRIVER DOOR LOCK SWITCH INPUT CIRCUIT STUCK (CONTINUED)

2.

DOOR LOCK SWITCH STUCK

Disconnect the Driver Window/Door Lock Switch C1 connector.

With the DRBIII

T

in sensors, read the DRV DOOR LOCK SW MUX

circuit.

Is the voltage above 4.6 volts?

Yes

>> Replace the Driver Window/Door Lock Switch.

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.

(G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT SHORTED

Turn the ignition off.

Disconnect the Instrument Cluster C4 connector.

Measure the resistance between the (G161) Driver Door Lock Switch
Mux circuit and ground.

Is the resistance below 10000.0 ohms?

Yes

>> Repair the (G161) Driver Door Lock Switch Mux circuit for

a partial short to ground.

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

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

No

>> Replace the Instrument Cluster

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

ELECTRICAL/ELECTRONIC

CONTROL

MODULES/

FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)

8N - 32

POWER LOCKS - ELECTRICAL DIAGNOSTICS

DR/DH

PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO
VOLTAGE

DR/DH

POWER LOCKS - ELECTRICAL DIAGNOSTICS

8N - 33