Step
| Action
| Value(s)
| Yes
| No
|
1
| Was the Automatic Door Locks System Check performed?
| --
| Go to
Step 2
| Go to
Power Door Locks System Check
|
2
| Was the Body Control Module (BCM)
Diagnostic System Check performed?
| --
| Go to
Step 3
| Go to
Diagnostic System Check - Body Control System
|
3
|
- Turn the ignition switch to the LOCK position.
- Connect the Tech 2 to the data link connector.
- Turn the ignition switch to the RUN position.
- Monitor the unlock and lock switch input on the Tech 2.
- While observing the Tech 2 press unlock and lock on the drivers
side door lock switch.
Upon pressing unlock and lock, does the Tech 2 indicate unlock and lock
switch status as active?
| --
| Go to
Step 5
| Go to
Step 4
|
4
|
- Turn the ignition switch to the lock position.
- Disconnect the drivers side door lock switch.
- Connect a test light between B+ and the drivers side door lock
switch harness connector terminal F.
Does the test light illuminate?
| --
| Go to
Step 10
| Go to
Step 8
|
5
|
- Using the Tech 2, select the output status.
- While observing Tech 2, press lock on driver door switch.
Did Tech 2 indicate output status change?
| --
| Go to
Step 6
| Go to
Step 7
|
6
| Repair a poor connection or open in CKT 295.
Has the repair been made?
| --
| Go to
Step 9
| --
|
7
|
- Inspect for a poor connection at the BCM.
- If the connection is OK, replace the BCM. Refer to
Body Control Module Replacement
in Body Control
System.
- After BCM replacement, perform the Setup New BCM Procedure. Refer
to
Body Control Module (BCM) Programming/RPO Configuration
in Body Control System.
Has the repair been made?
| --
| Go to
Step 9
| --
|
8
| Repair a poor connection or open in CKT 750.
Has the repair been made?
| --
| Go to
Step 9
| --
|
9
|
- Turn the ignition switch to the LOCK position.
- Reconnect the connectors.
- Reinstall the components.
Have all the repairs been made?
| --
| Go to
Power Door Locks System Check
| --
|
10
|
- Turn the ignition switch to the LOCK position.
- Reconnect the door lock switch.
- Disconnect the body control module (BCM) connector C1.
- Connect a digital multimeter (DMM).
- Measure the voltage between the BCM harness connector C1 terminal
D12 and B+.
Is the voltage within the specified range?
| 9-14 V
| Go to
Step 11
| Go to
Step 12
|
11
| Repair a short to ground in CKT 780.
Has the repair been made?
| --
| Go to
Step
9
| --
|
12
|
- Disconnect the drivers side door lock switch.
- Connect a DMM.
- Check continuity between the BCM harness connector C1 terminal
D12 and the door lock switch harness connector terminal C.
Is there continuity?
| --
| Go to
Step
14
| Go to
Step 13
|
13
| Repair a poor connection or open in CKT 780.
Has the repair been made?
| --
| Go to
Step
9
| --
|
14
|
- Connect a digital multimeter (DMM).
- Measure the voltage between the BCM harness connector C1 terminal
D13 and B+.
Is the voltage within the specified range?
| 9-14 V
| Go to
Step 15
| Go to
Step
16
|
15
| Repair a short to ground in CKT 781.
Has the repair been made?
| --
| Go to
Step
9
| --
|
16
|
- Connect a DMM.
- Check the continuity between the BCM harness connector C1 terminal
D13 and the door lock switch harness connector terminal B.
Is there continuity?
| --
| Go to
Step
7
| Go to
Step 17
|
17
| Repair a poor connection or open in CKT 781.
Has the repair been made?
| --
| Go to
Step
9
| --
|
