Step
| Action
| Value(s)
| Yes
| No
|
|
Important::
| • | Inspect the condition of the body control module (BCM), Ign 1,
cruise fuse and park lamp fuses (located in the fuse block and the body wiring
harness junction block). If any fuse is open, replace the fuse and
retest system for intermittent fuse failure. If the fuse continues
to fail locate and repair the source of overload. Refer to
Power Distribution Schematics
. |
| • | Inspect in order to make sure that Ground G203 and G304 are clean
and tight. |
| • | This diagnostic table assumes that all other chimes, turn signals
and turn signal indicators operate properly. |
|
1
| Did you perform the Diagnostic System Check - Audible Warnings?
| --
|
Go to Step 2
| Go to
Diagnostic System Check - Audible Warnings
|
2
| Verify the fault is present.
Does the system operate normally?
| --
| Go to
Testing for Intermittent Conditions and Poor Connections
|
Go to Step 3
|
3
|
- Turn ON the ignition with the engine OFF.
- Using a scan tool, read the BCM input data while operating the
left and the right turn signals.
Does the scan tool read ON or OFF?
| ON/OFF
|
Go to Step
4
|
Go to Step
6
|
4
|
- Raise and properly support the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Start the engine.
- Place the transmission in drive.
- Read the vehicle speed of greater than 16 Km/h (10 mph)
for a minimum of 1.6 Km (1.0 miles).
Does scan tool read specific value?
| Greater than 16 Km/h (10 mph)
|
Go to Step 5
|
Go to Step 7
|
5
| Replace the BCM. Refer to
Body Control Module Replacement
in Body Control Systems.
Did you complete the replacement?
| --
|
Go to Step
9
| --
|
6
| Repair the open in the LF turn signal lamp feed or the
RF turn signal lamp feed between the BCM and the body wiring harness junction
block. Refer to
Wiring Repairs
in Wiring Systems.
Did you complete the repair?
| --
|
Go to Step
9
| --
|
7
| Shift the scan tool display to read the powertrain control
module (PCM)/vehicle control module (VCM) DTCs.
Does the scan tool read DTC P0500 or DTC P0608?
| --
| Go to appropriate DTC
|
Go to Step 8
|
8
| Repair the open or short to ground in the variable speed signal circuit
between the PCM/VCM and the BCM.
Did you complete the repair?
| --
|
Go to Step
9
| --
|
9
| Operate the system in order to verify the repair.
Did you correct the condition?
| --
| System OK
|
Go to Step
3
|
