Circuit Description
The circuit for the right rear door power window switch consists of the following components:
| • | The right rear power window switch |
| • | The rear door module (RDM) |
| • | The simple bus interface (SBI) |
| • | The driver door module (DDM) |
The right rear power window switch provides input to the RDM. The RDM reports all switch activity in the form of SBI messages to the DDM. The diagnostic software for the DTC B2206 is contained in the DDM. The diagnostic program is run no less than once every 300 milliseconds. Faults involving the DDM or the SBI may set other DTCs and affect the operation of the power door locks and the outside mirrors.
Conditions for Setting the DTC
DTC B2206 is set current if the simple bus interface (SBI) messages from the rear door module (RDM) indicate that the right rear window switch has been in the UP position for 15 consecutive seconds. This diagnostic will not run if either DTC B1982 (battery voltage high) or DTC B1983 (battery voltage low) are set current.
Action Taken When the DTC Sets
This DTC is dynamic and is current only when the fault is present. While DTC B2206 is current, the rear door module (RDM) will ignore actuation of the right rear window switch.
Conditions for Clearing the DTC
| • | DTC B2206 will be set from current to history when either of the following occur: |
| • | The window UP input cycles off. |
| • | 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 the history DTC. |
Diagnostic Aids
| • | A history DTC is evidence of an intermittent problem. |
| • | If DTC B2206 is current, cycle the ignition from OFF to RUN. If the DTC is still current, perform the following diagnostic. |
Test Description
The number(s) below refer to the step number(s) on the diagnostic table.
-
Perform the Power Door Diagnostic System Check prior to continuing the diagnosis of this DTC.
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This step inspects for other current set DTCs.
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This step inspects the rear door power window switches.
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This step tests CKT 1186 for a short to ground.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Did you perform the Power Door Diagnostic System Check? | -- | Go to Step 2 | ||
Are both DTC B2203 and DTC B2205, or DTC B2206 and DTC B2207 set current? | -- | Go to Step 5 | Go to Step 3 | |
Is one of the rear door window switches stuck in the up position or in the down position? | -- | Go to Step 6 | Go to Step 4 | |
Test CKT 1186 (GRY/BLK) for a short to ground. Is the circuit OK? | -- | Go to Step 6 | Go to Step 7 | |
5 | Replace the rear door module. Refer to Door Control Module Replacement . Did you complete the repair? | -- | Go to Step 8 | -- |
6 | Replace the rear power window switch. Refer to Front Side Door Window Switch Replacement . Did you complete the repair? | -- | Go to Step 8 | -- |
7 | Repair the short to ground in CKT 1186 (GRY/BLK). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 8 | -- |
8 |
Are all of the DTCs cleared? | -- | Go to Step 8 | -- |
