Step | Action | Yes | No |
1 | Did you perform the Door Systems Diagnostic System Check? | Go to Step 2 | |
2 |
Do both door locks and switches operate normally? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are the door locks totally inoperative? | Go to Step 5 | Go to Step 4 |
4 | Does either door lock actuator operate properly from BOTH switches? | Go to Step 16 | Go to Step 11 |
5 | Connect a test lamp between the battery positive voltage circuit of the body control module (BCM) at the BCM connector C2 terminal B and ground. Refer to Circuit Testing in Wiring Systems. Did the test lamp illuminate? | Go to Step 6 | Go to Step 7 |
6 |
Does the test lamp illuminate in each case? | Go to Step 9 | Go to Step 12 |
7 | Test the battery positive voltage circuit to the BCM 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 25 | Go to Step 8 |
8 |
Did the COURTESY Fuse open? | Go to Step 17 | Go to Step 21 |
9 |
Does the test lamp illuminate? | Go to Step 10 | Go to Step 17 |
10 | Test for an open in the door lock actuator lock control circuit between the BCM connector C1 terminal B and S504. Refer to Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 25 | Go to Step 21 |
11 |
Does the test lamp illuminate? | Go to Step 13 | Go to Step 12 |
12 | Repair the open you found in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 25 | -- |
13 | Individually test each suspect door lock switch while removed by connecting a DMM between switch terminal A and terminal C then D while actuating the switch to lock and unlock, respectively. Does the DMM indicate continuity when the switch is depressed and infinity when released in each case? | Go to Step 14 | Go to Step 19 |
14 |
Does the test lamp illuminate in each case only while the switch is depressed? | Go to Step 15 | Go to Step 18 |
15 |
Does the test lamp flash in each case only when commanded? | Go to Step 16 | -- |
16 |
Does the test lamp flash in each case only when commanded? | Go to Step 23 | Go to Step 17 |
17 | Test the appropriate door lock actuator 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 25 | Go to Step 23 |
18 | Test the inoperative door lock switch 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 25 | -- |
19 | Inspect for poor connections at the inoperative 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 25 | Go to Step 20 |
20 | Replace the inoperative door lock switch. Refer to Door Lock Switch Replacement . Did you complete the repair? | Go to Step 25 | -- |
21 | Inspect for poor connections at 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 25 | Go to Step 22 |
22 | Replace the BCM. Refer to Body Control Module Replacement in Body Control System. Did you complete the repair? | Go to Step 25 | -- |
23 | Inspect for poor connections at the inoperative door lock actuator. 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 25 | Go to Step 24 |
24 | Replace the inoperative door lock actuator. Refer to Door Lock Actuator Replacement . Did you complete the repair? | Go to Step 25 | -- |
25 |
Did you correct the condition? | System OK | Go to Step 2 |