All Doors Fail to Lock

ALL DOORS FAIL TO LOCK

All Doors Fail To Lock:

POSSIBLE CAUSES
- Key-in ignition switch shorted
- (P33) door lock relay output circuit short to ground
- Door lock relay

DIAGNOSTIC TEST

1. DTC'S PRESENT
With the scan tool, read DTCs.

Q: Are there any Power Door Lock related codes present?

YES: Refer to symptom list for problems related to POWER DOOR LOCKS/RKE.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 2

2. CHECK KEY-IN IGNITION SWITCH - SHORTED
Close both front doors.
Insert the key in the ignition switch but do not turn the switch on.

Q: Does the Chime continue to sound?

YES: Refer to symptom list for problems related to CHIME.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 3

3. CHECK DOOR LOCK RELAY OUTPUT CIRCUIT FOR A SHORT TO GROUND




Turn the ignition off.
Remove the Door Lock, the Door Unlock and the Driver Door Unlock relays from the Junction Block.
Measure the resistance between ground and the (P33) Door Lock Relay Output circuit in the Door Lock relay connector.

Q: Is the resistance below 1000.0 ohms?

YES: Repair the (P33) Door Lock Relay Output circuit for a short to ground.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Replace the Door Lock Relay.
Perform BODY VERIFICATION TEST - VER 1. Body Verification Test