Power Door Locks Inoperative - Key Cylinder Switches
WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
Power Door Locks Inoperative - Key Cylinder Switches
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Power Door Systems Connector End Views |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
| 2 | Verify that the power door locks key cylinder switches inoperative fault is present. Does the power door locks key cylinder switches system operate normally? |
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 | Does the power door locks system operate normally? | Go to Step 4 | Go to Symptoms - Doors |
| 4 | Are both the door lock and unlock functions inoperative from the key cylinder switch? | Go to Step 6 | Go to Step 5 |
| 5 | Is the key cylinder switch door lock function the inoperative function? | Go to Step 7 | Go to Step 8 |
| 6 | Test the ground circuit of the appropriate door lock cylinder switch for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 13 | Go to Step 9 |
| 7 | Test the driver door lock switch lock signal circuit of the appropriate door lock cylinder switch for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 13 | Go to Step 10 |
| 8 | Test the driver door lock switch unlock signal circuit of the appropriate door lock cylinder switch for an open. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 13 | Go to Step 10 |
| 9 | Inspect for poor connections at the harness connector of the appropriate door lock cylinder switch. Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 13 | Go to Step 11 |
| 10 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 13 | Go to Step 12 |
| 11 | Replace the appropriate door lock cylinder switch. Refer to Lock Cylinder Replacement - Door . Did you complete the replacement? |
Go to Step 13 | - |
| 12 | Replace the BCM. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup and programming. Did you complete the replacement? |
Go to Step 13 | - |
| 13 | Operate the system in order to verify the repair. Did you correct the condition? |
System OK | Go to Step 2 |