Dodge Ram. Manual — part 120
TEST
ACTION
APPLICABILITY
3
Disconnect the Instrument Cluster C2 connector.
Measure the voltage between Passenger Door Lock Switch Mux circuit and ground.
Is there any voltage present?
All
Yes
→ Go To 4
No
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
4
Disconnect the Passenger Door Lock Switch connector.
Disconnect the Instrument Cluster C2 connector.
Measure the voltage between Passenger Door Lock Switch Mux circuit and ground.
Is there any voltage present?
All
Yes
→ Repair the Passenger Door Lock Switch Mux circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Test Complete.
5
Disconnect the Passenger Door Lock Switch connector.
Using a 12-volt test light connected to 12-volts, check the Ground circuit.
Does the test light illuminate brightly?
All
Yes
→ Go To 6
No
→ Repair the Ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
6
Disconnect the Passenger Door Lock Switch connector.
Measure the voltage between Passenger Door Lock Switch Mux circuit and ground.
Is the voltage above 4.6 volts?
All
Yes
→ Go To 7
No
→ Repair the Passenger Door Lock Switch Mux circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
7
If there are no possible causes remaining, view repair.
All
Repair
Replace the Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
477
POWER DOOR LOCKS/RKE
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT
TO VOLTAGE —
Continued
Symptom:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED
When Monitored and Set Condition:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED
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 below .25 volts, the input circuit is not valid and this code will set.
POSSIBLE CAUSES
DTC PRESENT
DOOR LOCK SWITCH SHORTED
DOOR LOCK SWITCH MUX SHORTED
INSTRUMENT CLUSTER - - PASSENGER DOOR LOCK SWITCH INPUT SHORTED
TEST
ACTION
APPLICABILITY
1
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 the Passenger Door Lock Switch while
monitoring the DRBIII
t.
Does the DRBIII
t display PASS DOOR LOCK SW INPUT CIRCUIT SHORTED?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors.
Perform BODY VERIFICATION TEST - VER 1.
2
Disconnect the Door Lock Switch connector.
With the DRBIII
t in Sensors, read the PASS DOOR LOCK SW MUX circuit
Is the voltage above 4.6 volts?
All
Yes
→ Replace the Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Disconnect the Passenger Door Lock Switch connector.
Disconnect the Instrument Cluster C2. connector.
Measure the resistance between Passenger Door Lock Switch Mux circuit and
ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Passenger Door Lock Switch Mux circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
478
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
4
If there are no possible causes remaining, view repair.
All
Repair
Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
479
POWER DOOR LOCKS/RKE
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED —
Continued
Symptom:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT STUCK
When Monitored and Set Condition:
PASSENGER DOOR LOCK SWITCH INPUT CIRCUIT STUCK
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 between 1.3 and 3.95 for over 20 seconds, this code will set.
POSSIBLE CAUSES
DTC PRESENT
INSTRUMENT CLUSTER - DOOR LOCK SWITCH VOLTAGE INCORRECT
DOOR LOCK SWITCH MUX CIRCUIT PARTIAL SHORT TO GROUND
DOOR LOCK SWITCH STUCK
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRBIII
t, record and erase DTC’s.
With the DRBIII
t, read DTC’s.
Operate the door lock several times from the Passenger Door Lock Switch while
monitoring the DRBIII
t.
Does the DRBIII
t display Pass DOOR LOCK SW INPUT STUCK?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors. Check the door lock switch for a possible
intermittent sticking condition
Perform BODY VERIFICATION TEST - VER 1.
2
With the DRBIII
t in Sensors, read the PASS DOOR LOCK SW MUX voltage.
Does the DRBIII
t display voltage between 1.3 and 3.95 volts?
All
Yes
→ Go To 3
No
→ Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
3
Disconnect the Passenger Door Lock Switch connector.
Measure the voltage between Door Lock Switch Mux circuit and ground.
Is the voltage above 4.6 volts?
All
Yes
→ Test Complete.
No
→ Repair the Passenger Door Lock Switch Mux circuit for a partial
short to ground.
Perform BODY VERIFICATION TEST - VER 1.
480
POWER DOOR LOCKS/RKE
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