Dodge Ram 2004, Service Manual

Page: 483 / 642

Symptom:
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT
TO VOLTAGE
When Monitored and Set Condition:
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO VOLT-
AGE
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
DTC PRESENT
INSTRUMENT CLUSTER - DRIVER DOOR LOCK SWITCH VOLTAGE LOW
DOOR LOCK SWITCH GROUND OPEN
DRIVER DOOR LOCK SWITCH MUX WIRE SHORT TO VOLTAGE
INSTRUMENT CLUSTER - VOLTAGE TO HIGH
DRIVER DOOR LOCK SWITCH MUX CIRCUIT OPEN
DOOR LOCK SWITCH - SHORT TO VOLTAGE
DOOR LOCK SWITCH OPEN
TEST ACTION APPLICABILITY
1 With the DRBIII
t
, record and erase DTC’s.
Cycle the ignition switch from ON to OFF.
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 DRV DOOR LOCK SW INPUT OPEN?
All
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.
2 With the DRBIII
t
in Sensors, read the DR DOOR LOCK SW voltage.
Voltage reading is:.
All
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.
469
POWER DOOR LOCKS/RKE