Power Door Locks Inoperative
WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Power Door Locks Inoperative
| Step | Action | Value | Yes | No |
|---|---|---|---|---|
| Schematic Reference: Door Lock/Indicator Schematics Connector End View Reference: Power Door Systems Connector End Views |
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| 1 | Did you review the power door system Description and Operation? | - | Go to Step 2 | Go to Diagnostic Starting Point - Doors |
| 2 | Close all doors, and remove the ignition key from the ignition cylinder. Does the power door locks system operate normally? |
- | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
- | Go to Door Ajar Indicator Malfunction | Go to Step 4 |
| 4 | Is the door lock system completely inoperative from both doors? | - | Go to Step 5 | Go to Power Door Locks Inoperative - One Door or Switch |
| 5 | Is the 25 amp DOOR fuse open? | - | Go to Step 13 | Go to Step 6 |
| 6 | Measure the voltage between the master switch lock signal circuit to the multifunction alarm module at the master switch harness connector and a good ground. Does the voltage measure near the specified value? |
0.180-0.250 volts | Go to Step 7 | Go to Step 11 |
| 7 | Measure the voltage between the master switch unlock signal circuit to the multifunction alarm module at the master switch harness connector and a good ground. Does the voltage measure near the specified value? |
0.180-0.250 volts | Go to Step 8 | Go to Step 12 |
| 8 | Measure the voltage between the driver door key cylinder lock signal circuit and a good ground. Does the voltage measure near the specified value? |
0.180-0.250 volts | Go to Step 9 | Go to Step 15 |
| 9 | Measure the voltage between the driver door key cylinder switch unlock signal circuit and a good ground. Does the voltage measure near the specified value? |
0.180-0.250 volts | Go to Step 10 | Go to Step 16 |
| 10 | Measure the voltage between the passenger door key cylinder switch unlock signal circuit and a good ground. Does the voltage measure near the specified value? |
0.180-0.250 volts | Go to Step 13 | Go to Step 16 |
| 11 | Test the door lock switch lock signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 19 | Go to Step 17 |
| 12 | Test the appropriate door lock switch unlock signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 19 | Go to Step 17 |
| 13 | Test the appropriate door lock actuator lock control circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 19 | Go to Step 14 |
| 14 | Test the appropriate door lock actuator unlock control circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 19 | Go to Step 17 |
| 15 | Test the appropriate key cylinder switch lock signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 19 | Go to Step 17 |
| 16 | Test the appropriate key cylinder switch unlock signal circuit for an open or short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? |
- | Go to Step 19 | Go to Step 17 |
| 17 | Inspect for poor connections at the harness connector of the multifunction alarm module. 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 19 | Go to Step 18 |
| 18 | Replace the multifunction alarm module. Refer to Multifunction Alarm Module Replacement
in Instrument Panel, Gages and Console. Did you complete the replacement? |
- | Go to Step 19 | - |
| 19 | Operate the system in order to verify the repair. Did you correct the condition? |
- | System OK | Go to Step 2 |