B18BC

B18BC-WINDOW CONTROL CIRCUIT HIGH







- When Monitored:
Whenever the module is awake.

- Set Condition:
When the fused ignition switch output circuit to the power window switch is pulled to battery even with the ignition off for over 10 seconds, this code will set.





1. TEST FOR INTERMITTENT CONDITION
1. Turn the ignition on.
2. With the scan tool, record and erase DTC's
3. Try to operate the Power Windows up and down several times.
4. Wait 30 seconds.
5. With the scan tool, read DTC's.

Does the scan tool display B18BC-WINDOW CONTROL CIRCUIT HIGH?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors.
- Perform the BODY VERIFICATION TEST. Body Verification Test

2. TOTALLY INTEGRATED POWER MODULE (TIPM)




1. Turn the ignition off.
2. Disconnect the Totally Integrated Power Module C7 connector.
3. Turn the ignition on.
4. Measure the voltage between ground and the (F981) Fused Ignition Switch Output circuit in the TIPM C7 connector.

Is there any voltage present?

Yes

- Repair the (F981) Fused Ignition Switch Output circuit for a short to voltage.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

- Replace the Totally Integrated Power Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test