Power Door Locks Inoperative - All Doors and Switches with Keyless Entry
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Door Lock/Indicator Schematics DEFINITION: This diagnostic should be used to diagnose a complete failure of the power door lock system (lock, unlock or both). This diagnostic assumes that the system fuse has been checked for an open and that any shorts to ground in the battery positive voltage or door lock/unlock control circuits have been repaired. If the power door lock system is still inoperative after any shorts to ground have been repaired and the fuse replaced, continue with the diagnosis. | |||
1 | Did you review the Power Door Locks Description and Operation? | Go to Step 2 | Go to Symptoms - Doors |
2 | Actuate all door lock switches to both the lock and unlock positions. Did all the doors lock and unlock? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Did any of the doors lock and unlock from any of the switches? | Go to Power Door Lock Inoperative - Driver Door or Power Door Locks Inoperative - One Door or Switch | Go to Step 4 |
4 |
Did the test lamp illuminate? | Go to Step 5 | Go to Step 15 |
5 |
Did the test lamp illuminate? | Go to Step 6 | Go to Step 16 |
6 | Connect a test lamp between the battery positive voltage circuit and the door lock relay ground circuit at the relay connector. Did the test lamp illuminate? | Go to Step 7 | Go to Step 17 |
7 | Connect a test lamp between the door lock control circuit at the relay connector and a good ground. Did the test lamp illuminate? | Go to Step 19 | Go to Step 8 |
8 | With the test lamp still connected to the door lock control circuit, press a door lock switch to the lock position. Did the test lamp illuminate? | Go to Step 9 | Go to Step 18 |
9 | Connect a test lamp between the door unlock control circuit at the relay connector and ground. Did the test lamp illuminate? | Go to Step 21 | Go to Step 10 |
10 | With the test lamp still connected to the door unlock control circuit, press a door lock switch to the unlock position. Did the test lamp illuminate? | Go to Step 11 | Go to Step 20 |
11 |
Did the test lamp illuminate? | Go to Step 12 | Go to Step 13 |
12 | Backprobe the door lock actuator lock circuit at the relay connector with a test lamp connected to B+. Did the test lamp illuminate? | Go to Step 14 | Go to Step 13 |
13 | Inspect for poor connections at the door lock relay. 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 23 | Go to Step 22 |
14 | Repair the open or short to ground in the in the door lock actuator lock circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
15 | Repair the open or short to ground in the door lock switch battery positive voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
16 | Repair the open or short to ground in the door lock relay battery positive voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
17 | Repair the open in the door lock relay ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
18 | Repair the open or short to ground in the door lock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | -- |
19 | Repair the short to B+ in the door lock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
20 | Repair the open or short to ground in the door unlock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
21 | Repair the short to B+ in the door unlock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
22 | Replace the door lock relay. Did you complete the repair? | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
Power Door Locks Inoperative - All Doors and Switches without Keyless Entry
Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Door Lock/Indicator Schematics DEFINITION: This diagnostic should be used to diagnose a complete failure of the power door lock system (lock, unlock or both). | |||
1 | Did you review the Power Door Locks Description and Operation? | Go to Step 2 | Go to Symptoms - Doors |
2 | Actuate all door lock switches to both the lock and unlock positions. Did all the doors lock and unlock? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Did any of the doors lock and unlock from any of the switches? | Go to Step 4 | |
4 |
Did the test lamp illuminate? | Go to Step 5 | Go to Step 15 |
5 | Connect a test lamp between the battery positive voltage circuit and the driver door lock switch ground circuit at the driver door lock switch harness connector. Did the test lamp illuminate? | Go to Step 6 | Go to Step 16 |
6 |
Did the test lamp illuminate? | Go to Step 7 | Go to Step 10 |
7 |
Did the test lamp illuminate? | Go to Step 8 | Go to Step 11 |
8 |
Did the test lamp illuminate? | Go to Step 9 | Go to Step 13 |
9 |
Did the test lamp illuminate? | Go to Step 14 | Go to Step 13 |
10 | Test for an open in the door lock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 19 | Go to Step 12 |
11 | Test for an open or short to ground in the door unlock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 19 | Go to Step 12 |
12 | Inspect for poor connections at the driver door lock 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 19 | Go to Step 17 |
13 | Inspect for poor connections at the passenger door lock 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 19 | Go to Step 18 |
14 | Repair the open or short to ground in the in the door lock actuator lock and or unlock circuit(s). Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 19 | -- |
15 | Repair the open or short to ground in the door lock switch battery positive voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 19 | -- |
16 | Repair the open in the driver door lock switch ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 19 | -- |
17 | Replace the driver door lock switch. Refer to Door Lock Switch Replacement . Did you complete the repair? | Go to Step 19 | -- |
18 | Replace the passenger door lock switch. Did you complete the repair? | 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 |
