Dodge Ram Truck 1500-2500-3500. Manual — part 466
ALL DOOR LOCK OUTPUT CIRCUIT SHORT TO GROUND OR VOLTAGE (CONTINUED)
6.
(P392) DOOR LOCK DRIVER RIGHT DOORS SHORT TO VOLTAGE
Turn the ignition on.
Measure the voltage between ground and the (P392) Door Lock Driver
Right Doors circuit.
Is there any voltage present?
Yes
>> Repair the (P392) Door Lock or (G778) Unlock Driver
Right Doors 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
>> Go To 7
7.
(P393) DOOR LOCK DRIVER LEFT DOORS SHORT TO VOLTAGE
Measure the voltage between ground and the (P393) Door Lock Driver
Left Doors circuit.
Is there any voltage present?
Yes
>> Repair the (P393) Door Lock or (P5) Door Unlock Driver
Left Rear or (P1) Door Unlock Driver Left Front 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 Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
8N - 6
POWER LOCKS - ELECTRICAL DIAGNOSTICS
DR/DH
ALL DOOR UNLOCK OUTPUT CIRCUIT SHORT TO GROUND OR VOLTAGE
DR/DH
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 7
ALL DOOR UNLOCK OUTPUT CIRCUIT SHORT TO GROUND OR VOLTAGE (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:
Whenever the instrument cluster is awake.
•
Set Condition:
The instrument cluster monitors the door unlock output circuits and when one of them is shorted to ground or
to voltage, this code will set. This code will only set when the door locks are actuated.
Possible Causes
(P392) DOOR LOCK DRIVER RIGHT DOORS SHORTED TO (G778) DOOR UNLOCK DRIVER RIGHT DOORS
(P393) DOOR LOCK DRIVER LEFT DOORS SHORTED TO (P5) DOOR UNLOCK DRIVER LEFT REAR
DOOR UNLOCK DRIVER RIGHT DOORS CIRCUIT SHORT TO GROUND
DOOR UNLOCK DRIVER LEFT REAR CIRCUIT SHORT TO GROUND
DOOR UNLOCK DRIVER RIGHT DOORS SHORT TO VOLTAGE
DOOR UNLOCK DRIVER LEFT REAR SHORT TO VOLTAGE
DOOR LATCH
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 a door lock
switch while monitoring the DRBIII
T
.
Does the DRBIII
T
display ALL DOOR UNLOCK
OUTPUT SHORT TO GROUND OR VOLTAGE?
Yes
>> Go To 2
No
>> Using the wiring diagram/schematic as a
guide, inspect the wiring and connectors.
Check for any possible shorted conditions
between the instrument cluster and the
door lock motors.
Perform BODY VERIFICATION TEST -
VER 1. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC
CONTROL
MODULES/FRONT
CONTROL MODULE - DIAGNOSIS AND
TESTING)
8N - 8
POWER LOCKS - ELECTRICAL DIAGNOSTICS
DR/DH
ALL DOOR UNLOCK OUTPUT CIRCUIT SHORT TO GROUND OR VOLTAGE (CONTINUED)
2.
(P392) DOOR LOCK DRIVER RIGHT DOORS SHORTED TO (G778) DOOR UNLOCK DRIVER RIGHT
DOORS
NOTE: If only one motor is inoperative when the door locks are
actuated, disconnect that door latch connector and retest to see
if the DTC is still present. If it is not, replace that door latch.
Turn the ignition off.
Disconnect the Instrument Cluster C1 connector.
Measure the resistance between the (P392) Door Lock Driver Right
Doors circuit and the (G778) Door Unlock Driver Right Doors circuit in
the Instrument Cluster connector.
Is the resistance below 1.6 ohms?
Yes
>> Repair the (P392) Door Lock Driver Right Doors circuit for
a short to the (G778) Door Unlock Driver Right Doors cir-
cuit (could be a shorted motor).
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 SHORTED TO (P5) DOOR UNLOCK DRIVER LEFT REAR
NOTE: If this is a 2 door vehicle, answer NO to the question and
continue.
Measure the resistance between the (P393) Door Lock Driver Left
Doors circuit and the (P5) Door Unlock Driver Left Rear circuit in the
Instrument Cluster connector.
Is the resistance below 2.5 ohms?
Yes
>> Repair the (P393) Door Lock Driver Left Doors circuit for a
short to the (P5) Door Unlock Driver Left Rear or the (P1)
Door Unlock Driver Left Front circuit (could be a shorted
motor).
Perform BODY VERIFICATION TEST - VER 1. (Refer to 8
-
ELECTRICAL/ELECTRONIC
CONTROL
MODULES/
FRONT CONTROL MODULE - DIAGNOSIS AND TEST-
ING)
No
>> Go To 4
DR/DH
POWER LOCKS - ELECTRICAL DIAGNOSTICS
8N - 9
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