Dodge Ram. Manual — part 118
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
TEST
ACTION
APPLICABILITY
3
Disconnect the Instrument Cluster C2 connector.
Measure the voltage between Driver 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 Driver Door Lock Switch (Driver Door Module C1) connector.
Disconnect the Instrument Cluster C2 connector.
Measure the voltage between Driver Door Lock Switch Mux circuit and ground.
Is there any voltage present?
All
Yes
→ Repair the Driver Door Lock Switch Mux circuit for a short to
voltage.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Door Lock Switch.
Perform BODY VERIFICATION TEST - VER 1.
5
Disconnect the Driver Door Lock Switch (Driver Door Module C1) 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 Driver Door Lock Switch (Driver Door Module C1) connector.
Measure the voltage between Driver Door Lock Switch Mux circuit and ground.
Is the voltage above 4.6 volts?
All
Yes
→ Go To 7
No
→ Repair the Driver 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 Driver Door Module..
Perform BODY VERIFICATION TEST - VER 1.
470
POWER DOOR LOCKS/RKE
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT OPEN OR SHORT TO
VOLTAGE —
Continued
Symptom:
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED
When Monitored and Set Condition:
DRIVER 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 driver 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 - - DRIVER 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 Driver Door Lock Switch while
monitoring the DRBIII
t.
Does the DRBIII
t display DR 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 Driver Door Lock Switch (Driver Door Module C1) connector.
With the DRBIII
t in sensors, read the DRV DOOR LOCK SW MUX circuit.
Is the voltage above 4.6 volts?
All
Yes
→ Replace the Driver Door Module.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 3
3
Disconnect the Driver Door Lock Switch (Driver Door Module C1) connector.
Disconnect the Instrument Cluster C2. connector.
Measure the resistance between Driver Door Lock Switch Mux circuit and ground.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Driver Door Lock Switch Mux circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Go To 4
471
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.
472
POWER DOOR LOCKS/RKE
DRIVER DOOR LOCK SWITCH INPUT CIRCUIT SHORTED —
Continued
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