Circuit Description
The circuit for the RH Rear Door Window Switch consists of:
| • | RH Rear Power Window Switch |
| • | RH Rear Door Module (RRDM) |
| • | Simple Bus Interface (SBI) |
| • | LH Front Door Module (LFDM) |
The RH Rear Power Window Switch provides input to the RH Rear Door Module. The RRDM reports all switch activity in the form of SBI messages to the LFDM. The actual diagnostic software program for DTC B2206 is contained within the LFDM and this diagnostic is run once every 300 milliseconds. Problems involving the LFDM or SBI may set other DTCs and affect the operation of the power door locks and outside rear view mirror.
Conditions for Setting the DTC
If the LFDM detects that the SBI messages from the RRDM show that the RH Rear Window Switch has been in the UP position for 15 continuous seconds, this DTC will be set current. This diagnostic will not run if either DTC B1982 (Battery Voltage High) or B1983 (Battery Voltage Low) are set current.
Action Taken When the DTC Sets
This DTC is dynamic, and as such, is current only while the problem is present. While this DTC is current, the RRDM will ignore the actuation of the RH Rear Power Window Switch.
Conditions for Clearing the DTC
- This DTC will be set from current to history when the window UP input cycles off or the power mode changes from OFF to RUN.
- The history DTC will clear after 50 ignition cycles.
- The scan tool or the vehicle On Board Diagnostic System can be used to clear the history DTC.
Diagnostic Aids
| • | A history DTC is evidence of an intermittent problem, clear the DTC and cycle the ignition switch from OFF to RUN. Then perform the Diagnostic System Check. |
| • | If DTC B2206 is current, cycle the ignition switch from OFF to RUN. If this DTC is still current, perform the following diagnostic. |
Test Description
The numbers below refer to the step numbers on the diagnostic table:
-
Perform the Power Door System Diagnostic System Check prior to diagnosis.
-
This step tests the RH rear power window switch for an internal short.
-
This step tests CKT 1186 for a short to ground.
-
This repair procedure requires the repair CKT 1185 for a short to ground.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Was the Power Door System Diagnostic System Check performed? | -- | Go to Step 2 | ||
Does the scan tool indicate UP? | -- | Go to Step 4 | Go to Step 3 | |
3 | Replace the RH rear power window switch. Refer to Rear Side Door Window Switch Replacement . Did you complete the repair? | -- | Go to Step 7 | -- |
Is the resistance within the specified range? | 0-5 ohms | Go to Step 5 | Go to Step 6 | |
Repair CKT 1185 for a short to ground. Refer to Wiring Repairs in Wiring Systems. Did you complete the repair? | -- | Go to Step 7 | -- | |
6 | Replace the RH rear door module (RRDM). Refer to Door Control Module Replacement . Did you complete the replacement? | -- | Go to Step 7 | -- |
7 |
Are all DTCs cleared? | -- | -- |
