For 1990-2009 cars

## Power Door Locks Switch Inoperative - One Door Lock Switch

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: The lock or unlock functions do not work through one of the door lock switches. However, the other door lock switch locks and unlocks the doors.
1 | Did you review the operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 |

1. Make sure the door are unlocked.
2. Disconnect the inoperative door lock switch electrical connector.
3. Connect a test lamp between B+ and the inoperative door lock switch harness connector terminal E. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 3

Go to Step 6

3 | While observing the door locks, connect a 10A fuse jumper between the inoperative door lock switch harness connector terminal A and terminal E. Refer to Circuit Testing in Wiring Systems. Do the door locks lock? | -- | Go to Step 4 | Go to Step 7
4 | While observing the door locks, connect a 10A fuse jumper between the inoperative door lock switch harness connector terminal D and terminal E. Refer to Circuit Testing in Wiring Systems. Do the door locks unlock? | -- | Go to Step 5 | Go to Step 8
5 | Replace the inoperative door lock switch. Refer to Door Trim Plate Replacement . Is the repair complete? | -- | Go to Step 9 | --
6 | Repair the poor connection or the open in circuit 750. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | --
7 | Repair the poor connection or the open in circuit 195. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | --
8 | Repair the poor connection or the open in circuit 194. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | --
9 |

1. Turn the ignition switch to the LOCK position.
2. Reinstall the connectors and components that were removed.
3. Turn the ignition switch to the LOCK position.
4. Remove the BCM PRGRM fuse.
5. Turn the ignition switch to the ACC position. (The BCM sounds the chime a number of times equivalent to the BCM type installed on the vehicle).
6. Turn the ignition switch from the ACC position, to the LOCK position, then back to the ACC position within 1 second. (The BCM sounds any DTCs stored).

Are there any BCM DTCs present?

--

Go to Diagnostic Trouble Code (DTC) List/Type in Body Control Systems

Go to Step 10

10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2

## Power Door Locks Switch Inoperative - One Key Cylinder Switch

Step | Action | Value(s) | Yes | No
--- | --- | --- | --- | ---
DEFINITION: The lock or unlock functions do not work through one of the key cylinder switches. However, the other key cylinder switches lock and unlock the doors.
1 | Did you review the operation and perform the necessary inspections? | -- | Go to Step 2 | Go to Symptoms
2 |

1. Make sure the door are unlocked.
2. Disconnect the inoperative door lock cylinder switch electrical connector.
3. Connect a test lamp between B+ and the inoperative door lock cylinder switch harness connector terminal C. Refer to Circuit Testing in Wiring Systems.

Does the test lamp illuminate?

--

Go to Step 3

Go to Step 4

3 | While observing the door locks, connect a 10A fuse jumper between the inoperative door lock cylinder switch harness connector terminal A and terminal C. Refer to Circuit Testing in Wiring Systems. Do the door locks lock? | -- | Go to Step 5 | Go to Step 6
4 | Repair the poor connection or the open in circuit 750 (LF and RF) or circuit 450 (liftgate). Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | --
5 | While observing the door locks, connect a 10A fuse jumper between the inoperative door lock cylinder switch harness connector terminal D (LF and RF) or B (liftgate) and terminal C. Refer to Circuit Testing in Wiring Systems. Wait 2 seconds. Do the door locks unlock? | -- | Go to Step 7 | Go to Step 8
6 | Repair the poor connection or the open in circuit 780. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | --
7 | Replace the inoperative door lock cylinder switch. Refer to Door Lock Cylinder Replacement . Is the repair complete? | -- | Go to Step 9 | --
8 | Repair the poor connection or the open in circuit 781. Refer to Wiring Repairs or Connector Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 9 | --
9 |

1. Turn the ignition switch to the LOCK position.
2. Reinstall the connectors and components that were removed.
3. Turn the ignition switch to the LOCK position.
4. Remove the BCM PRGRM fuse.
5. Turn the ignition switch to the ACC position. (The BCM sounds the chime a number of times equivalent to the BCM type installed on the vehicle).
6. Turn the ignition switch from the ACC position, to the LOCK position, then back to the ACC position within 1 second. (The BCM sounds any DTCs stored).

Are there any BCM DTCs present?

--

Go to Diagnostic Trouble Code (DTC) List/Type in Body Control Systems

Go to Step 10

10 | Operate the system in order to verify the repair. Did you correct the condition? | -- | System OK | Go to Step 2