Chrysler 300M 2002 Service Manual page 2212

*ALL DOORS FAILING TO LOCK AND UNLOCK FROM ANY SWITCH —
Continued
TEST
8 With the DRBIII, observe the Door Lock Switch voltage
Press and hold the Driver Power Door Lock Switch in the lock position and observe
the DRB.
Is the voltage above 1.7 volts with the switch pressed in the lock position?
Yes → Replace the Body Control Module - Control open.
→ Go To 9
No
9 Turn the ignition off.
Disconnect the Driver Power Door Lock Switch harness connector.
Measure the voltage of the Fused B+ circuit.
Is the voltage above 10.0 volts?
Yes → Go To 10
→ Repair the open Fused B+ circuit.
No
10 Turn the ignition off.
Disconnect the Passenger Power Door Lock Switch harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Passenger Door Switch MUX circuit to ground.
Is the resistance below 5.0 ohms?
Yes → Repair the Passenger Door Switch MUX circuit for a short to
→ Go To 11
No
11 Turn the ignition off.
Disconnect the Driver Power Door Lock Switch harness connector.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Driver Door Switch MUX circuit to ground.
Is the resistance below 5.0 ohms?
Yes → Repair the Driver Door Switch MUX circuit for a short to ground.
→ Go To 12
No
12 Turn the ignition off.
Ensure the Passenger Door Lock Switch is connected before proceeding.
Disconnect the BCM C4 harness connector.
Measure the resistance of the Passenger Door Switch MUX circuit in the BCM C4
connector to ground.
Is the resistance below 1000.0 ohms?
Yes → Replace the Passenger Door Lock Switch.
→ Go To 13
No
ACTION
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
ground.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
Perform BODY VERIFICATION TEST - VER 1.
POWER DOOR LOCKS/RKE
489
APPLICABILITY
All
All
All
All
All