Dodge Ram 2004, Service Manual

Page: 490 / 642

Symptom:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR
SHORT TO VOLTAGE
When Monitored and Set Condition:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO
VOLTAGE
When Monitored: At all times when battery power is supplied to the Instrument Cluster.
Set Condition: When the Instrument Cluster senses voltage to the passenger door lock
switch above 4.85 volts this code will set and the input will not be valid..
POSSIBLE CAUSES
DTC PRESENT
INSTRUMENT CLUSTER - PASSENGER DOOR LOCK SWITCH VOLTAGE LOW
DOOR LOCK SWITCH GROUND OPEN
INSTRUMENT CLUSTER - VOLTAGE TO HIGH
PASSENGER DOOR LOCK SWITCH MUX WIRE SHORT TO VOLTAGE
PASSENGER 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 Passenger Door Lock Switch while monitoring the
DRBIII
t
.
Does the DRBIII
t
display PASS 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 PASS DOOR LOCK SW MUX 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.
476
POWER DOOR LOCKS/RKE