Dodge Ram Truck 1500-2500-3500. Manual — part 473
PASSENGER 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 on the passenger door lock switch circuit above 4.85 volts, this
will set and the input will not be valid.
Possible Causes
(G160) PASSENGER DOOR LOCK SWITCH WIRE SHORT TO VOLTAGE
(G160) PASSENGER DOOR LOCK SWITCH MUX CIRCUIT OPEN
(Z461) DOOR LOCK SWITCH GROUND OPEN
DOOR LOCK SWITCH SHORT TO VOLTAGE
DOOR LOCK SWITCH OPEN
INSTRUMENT CLUSTER - VOLTAGE TO HIGH
INSTRUMENT CLUSTER - PASSENGER DOOR LOCK SWITCH VOLTAGE LOW
Diagnostic Test
1.
DTC PRESENT
With the DRBIII
T
, record and erase DTC’s.
With the DRBIII
T
, read DTC’s.
Operate the door locks from the Passenger Door Lock
Switch while monitoring the DRBIII
T
.
Does the DRBIII
T
display PASSENGER 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 - 34
POWER LOCKS - ELECTRICAL DIAGNOSTICS
DR/DH
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO VOLTAGE (CONTINUED)
2.
INSTRUMENT CLUSTER - PASSENGER DOOR LOCK SWITCH VOLTAGE LOW
With the DRBIII
T
in Sensors, read the PASS 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 ignition off.
Disconnect the Instrument Cluster C4 connector.
Turn ignition on.
Measure the voltage between (G160) Passenger 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.
(G160) PASSENGER DOOR LOCK SWITCH WIRE SHORT TO VOLTAGE
Disconnect the Passenger Door Lock Switch connector.
Measure the voltage between the (G160) Passenger Door Lock Switch
Mux circuit and ground.
Is there any voltage present?
Yes
>> Repair the (G160) Passenger Door Lock Switch Mux cir-
cuit 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 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 - 35
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO VOLTAGE (CONTINUED)
5.
(Z461) DOOR LOCK SWITCH GROUND OPEN
Turn ignition off.
Disconnect the Passenger Door Lock Switch connector.
Using a 12-volt test light connected to 12-volts, check the (Z461)
Ground circuit in the Door Lock Switch connector.
Does the test light illuminate brightly?
Yes
>> Go To 6
No
>> Repair the (Z461) Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
6.
(G160) PASSENGER DOOR LOCK SWITCH MUX OPEN
Turn ignition on.
Measure the voltage between the (G160) Passenger Door Lock Switch
Mux circuit and ground.
Is the voltage above 4.6 volts?
Yes
>> Replace the Passenger Door 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 (G160) Passenger Door Lock Switch Mux cir-
cuit for an open.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
8N - 36
POWER LOCKS - ELECTRICAL DIAGNOSTICS
DR/DH
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED
DR/DH
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 37
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