Dodge Ram Truck 1500-2500-3500. Manual — part 470
DRIVER CYLINDER LOCK SWITCH INPUT STUCK (WITH VTSS ONLY) (CONTINUED)
3.
(G164) DRIVER CYLINDER LOCK SWITCH MUX SHORTED
Disconnect the Driver Cylinder Lock Switch connector.
Measure the voltage between (G163) Driver Cylinder Lock Switch Mux
circuit and ground.
Is the voltage above 4.9 volts?
No
>> Repair the (G163) Driver Cylinder 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)
Yes
>> Replace the Cylinder Lock Switch. Perform BODY VERIFI-
CATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC
CONTROL
MODULES/FRONT
CONTROL
MODULE - DIAGNOSIS AND TESTING)
8N - 22
POWER LOCKS - ELECTRICAL DIAGNOSTICS
DR/DH
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO VOLTAGE
DR/DH
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 23
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO VOLTAGE (CONTINUED)
For the Power Door Lock circuit diagram (Refer to 8 - ELECTRICAL/POWER LOCKS - SCHEMATICS AND DIA-
GRAMS) (Refer to ).
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 above 4.85 volts.
Possible Causes
(G161) DRIVER DOOR LOCK SWITCH WIRE SHORT TO VOLTAGE
(G161) DRIVER DOOR LOCK SWITCH MUX CIRCUIT OPEN
DOOR LOCK SWITCH GROUND OPEN
DOOR LOCK SWITCH SHORT TO VOLTAGE
DOOR LOCK SWITCH OPEN
INSTRUMENT CLUSTER - VOLTAGE TO HIGH
INSTRUMENT CLUSTER - DRIVER DOOR LOCK SWITCH VOLTAGE LOW
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 from the Driver Door Lock
Switch while monitoring the DRBIII
T
.
Does the DRBIII
T
display DRIVER DOOR LOCK
SWITCH INPUT CIRCUIT OPEN OR SHORT TO
VOLTAGE?
Yes
>> Go To 2
No
>> Using the wiring diagram/schematic as a
guide, inspect the wiring and connectors.
Check for any possible loose connections
at the instrument cluster and the door lock
switch.
Perform BODY VERIFICATION TEST -
VER 1. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC
CONTROL
MODULES/FRONT
CONTROL MODULE - DIAGNOSIS AND
TESTING)
8N - 24
POWER LOCKS - ELECTRICAL DIAGNOSTICS
DR/DH
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO VOLTAGE (CONTINUED)
2.
INSTRUMENT CLUSTER - DRIVER DOOR LOCK SWITCH VOLTAGE LOW
With the DRBIII
T
in Sensors, read the DRV DOOR LOCK SW voltage.
Voltage reading is:
Above 5.2 volts
Go To 3
Between 4.9 and 5.1 volts
Go To 5
Below 4.8 volts
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES/FRONT CONTROL MODULE - DIAGNOSIS AND TESTING)
3.
INSTRUMENT CLUSTER - VOLTAGE TO HIGH
Turn the ignition off.
Disconnect the Instrument Cluster C4 connector.
Turn the ignition on.
Measure the voltage between (G161) Driver Door Lock Switch Mux
circuit and ground.
Is there any voltage present?
Yes
>> Go To 4
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)
4.
(G161) DRIVER DOOR LOCK SWITCH WIRE SHORT TO VOLTAGE
Disconnect the Driver Window/Door Lock Switch C1 connector.
Measure the voltage between the (G161) Driver Door Lock Switch
Mux circuit and ground.
Is there any voltage present?
Yes
>> Repair the (G161) Driver Door Lock Switch Mux circuit for
a short to voltage.
Perform BODY VERIFICATION TEST - VER 1 (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING).
No
>> Replace the Window/Door Lock Switch.
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 - 25
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