Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Door Lock/Indicator Schematics DEFINITION: This diagnostic table should be used to diagnose a complete failure of all the lock functions. | |||
1 | Did you perform the Door Systems Diagnostic System Check? | Go to Step 2 | |
2 | Actuate each door lock switch, one at a time, to the lock position. Did the doors lock from each switch? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Did the doors lock from any switch? | Go to Step 4 | |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 14 |
5 | Connect a test lamp between the battery positive voltage circuit on the switched side of the door lock relay at the fuse block and a good ground. Does the test lamp illuminate? | Go to Step 6 | Go to Step 14 |
6 | Connect a test lamp between the ground circuit on the coil side of the door lock relay at the fuse block and B+. Does the test lamp illuminate? | Go to Step 7 | Go to Step 15 |
7 |
Does the test lamp illuminate? | Go to Step 8 | Go to Step 17 |
8 | 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 18 | Go to Step 9 |
9 |
Does the test lamp illuminate? | Go to Step 10 | Go to Step 16 |
10 |
Did the doors lock? | Go to Step 11 | Go to Step 12 |
11 | Inspect for poor connections at the door unlock 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 18 | Go to Step 13 |
12 | Replace the door lock relay. Did you complete the repair? | Go to Step 18 | -- |
13 | Replace the door unlock relay. Did you complete the repair? | Go to Step 18 | -- |
14 | Repair the open 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 18 | -- |
15 | 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 18 | -- |
16 | Repair the open in the door unlock relay ground circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- |
17 | Repair the open in the door lock control circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 18 | -- |
18 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
