Refer to
Cell 120: Front Power Window Components
Circuit Description
The simple bus interface, CKT 217 (LT BLU), provides a communications path from the LH front power window switch to the driver door module (DDM). The DDM contains the following two types of software:
| • | Switch message decoding software |
| • | Simple bus interface diagnostic software |
The software enables the DDM to monitor the state of the LH front power window switch.
Conditions for Setting the DTC
| • | DTC B2208 sets any time one of the LH front power window switches is detected as being continuously closed , for a period greater than 15 seconds. |
| • | DTCs B1982 (Battery Voltage High) and B1983 (Battery Voltage Low) must not be current or the diagnostic will not run. |
Action Taken When the DTC Sets
When this DTC is set, express functions are disabled but regular movement is not affected.
Conditions for Clearing the MIL/DTC
| • | This DTC will set from current to history when the EXPRESS input cycles off or when the power mode changes from OFF to RUN. |
| • | The history DTC will clear after 50 ignition cycles. |
| • | Use a scan tool in order to clear a history DTC. |
Test Description
The numbers below refer to the step numbers on the diagnostic table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Did you perform the Power Door Diagnostic System Check? | -- | Go to Step 2 | ||
Does the LH front window switch display idle? | -- | Go to Step 3 | Go to Step 4 | |
3 |
Does the LH front window switch parameter change state? | -- | Go to Step 7 | Go to Step 4 |
4 |
Does the scan tool indicate the Idle state? | -- | Go to Step 6 | Go to Step 5 |
5 | Replace the DDM. Refer to Front Door Module Replacement . Is the repair complete? | -- | Go to Step 7 | -- |
6 | Replace the LH front power window switch. Refer to Front Side Door Window Switch Replacement . Is the repair complete? | -- | Go to Step 7 | -- |
7 |
Are all the DTCs cleared? | -- | -- |
