Chrysler Town, Dodge Caravan. Manual — part 885
Symptom:
LOCK OUTPUT FAILURE
When Monitored and Set Condition:
LOCK OUTPUT FAILURE
When Monitored:
At all times when battery power is supplied to the Body Control
Module.
Set Condition:
When the BCM senses a short condition on the door lock circuits for over
125 milliseconds.
POSSIBLE CAUSES
DTC PRESENT
DOOR LOCK DRIVER SHORT TO GROUND
LEFT FRONT DOOR LOCK DRIVER SHORT GROUND
LEFT SLIDING DOOR LOCK DRIVER WIRE SHORT TO GROUND
RIGHT FRONT DOOR LOCK DRIVER WIRE SHORT TO GROUND
RIGHT SLIDING DOOR LOCK DRIVER WIRE SHORT TO GROUND
LEFT FRONT DOOR LOCK MOTOR - SHORT TO GROUND
LEFT SLIDING DOOR LOCK MOTOR - SHORT TO GROUND
RIGHT FRONT DOOR LOCK MOTOR - SHORT TO GROUND
RIGHT SLIDING DOOR LOCK MOTOR - SHORT TO GROUND
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.
Remove the key and operate the door locks several times from the Driver Door Lock
Switch while monitoring the DRBIII
t
Does the DRBIII
t display LOCK OUTPUT FAILURE?
All
Yes
→ Go To 2
No
→ Using the wiring diagram/schematic as a guide, inspect the
wiring and connectors for an intermittent problem.
Perform BODY VERIFICATION TEST - VER 1.
776
POWER DOOR LOCKS/RKE
TEST
ACTION
APPLICABILITY
2
Disconnect the Body Control Module C2 connector.
NOTE: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and each of the Door Lock Driver circuits.
Select the appropriate reading.
All
Right Front Door Lock under 1000.0 ohm
Right Sliding Door Lock under 1000.0 ohm
Left Front Door Lock under 1000.0 ohm
Left Sliding Door Lock under 1000.0 ohm
None of the circuits under 1000.0 ohms.
Replace the Body Control Module.
Perform BODY VERIFICATION TEST - VER 1.
3
Disconnect the Body Control Module C2 connector.
Disconnect the Right Front Door Lock Motor/Ajar Switch connector.
Measure the resistance between ground and the Right Front Door Lock Driver
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Right Front Door Lock Driver wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Door Lock Motor.
Perform BODY VERIFICATION TEST - VER 1.
4
Disconnect the Body Control Module C2 connector.
Disconnect the Right Sliding Door Lock Motor connector.
Measure the resistance between ground and the Right Sliding Door Lock Driver
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Right Sliding Door Lock Driver wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Right Sliding Door Lock Motor (Latch assy.)
Perform BODY VERIFICATION TEST - VER 1.
5
Disconnect the Body Control Module C2 connector.
Disconnect the Left Front Door Lock Motor connector.
Measure the resistance between ground and the Left Front Door Lock Driver circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Left Front Door Lock Driver circuit for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Door Lock Motor.
Perform BODY VERIFICATION TEST - VER 1.
777
POWER DOOR LOCKS/RKE
LOCK OUTPUT FAILURE —
Continued
TEST
ACTION
APPLICABILITY
6
Disconnect the Body Control Module C2 connector.
Disconnect the Left Sliding Door Lock Motor connector.
Measure the resistance between ground and the Left Sliding Door Lock Driver
circuit.
Is the resistance below 1000.0 ohms?
All
Yes
→ Repair the Left Sliding Door Lock Driver wire for a short to
ground.
Perform BODY VERIFICATION TEST - VER 1.
No
→ Replace the Left Sliding Door Lock Motor (Latch assy.)
Perform BODY VERIFICATION TEST - VER 1.
778
POWER DOOR LOCKS/RKE
LOCK OUTPUT FAILURE —
Continued
Symptom:
PASSENGER DOOR LOCK SWITCH INPUT OPEN OR SHORT TO
VOLTAGE
When Monitored and Set Condition:
PASSENGER DOOR LOCK SWITCH INPUT OPEN OR SHORT TO VOLTAGE
When Monitored:
At all times when battery power is supplied to the Body Control
Module.
Set Condition:
When the BCM senses voltage to the door lock switch above 4.6 volts for
over 10 seconds.
POSSIBLE CAUSES
DTC PRESENT
BODY CONTROL MODULE - PASSENGER DOOR LOCK SWITCH VOLTAGE LOW
DOOR LOCK SWITCH GROUND OPEN
DOOR LOCK SWITCH MUX OPEN
DOOR LOCK SWITCH OPEN
DOOR LOCK SWITCH MUX SHORT TO VOLTAGE
BODY CONTROL MODULE - DOOR LOCK SWITCH MUX SHORT TO VOLTAGE
TEST
ACTION
APPLICABILITY
1
With the DRBIII
t, record and erase DTC’s.
Cycle the ignition from ON to OFF to ON.
With the DRBIII
t, read DTC’s.
Remove the key and 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 OPEN OR SHORT TO
VOLTAGE?
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
With the DRBIII
t in Sensors, read the PASS DOOR LOCK SW voltage.
Does the DRBIII
t display 4.0 volts or greater?
All
Yes
→ Go To 3
No
→ Disconnect the BCM harness connector(s). Check connectors -
Clean/repair as necessary. If okay, replace the Body Control
Module.
Perform BODY VERIFICATION TEST - VER 1.
779
POWER DOOR LOCKS/RKE
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