Circuit Description
The simple bus interface (SBI), CKT 217 (LT BLU), provides a communications path from both the passenger door and the rear door modules to the driver door module (DDM). The DDM contains the following 2 types of software:
| • | Switch message decoding software |
| • | SBI diagnostic software |
The software enables the DDM to monitor the rear door power window switch states.
Conditions for Setting the DTC
DTC B2204 will set any time one of the rear power window switches is continuously closed in either the UP or DOWN position for a period greater than 15 seconds.
DTC B1982 (battery voltage high) and DTC B1983 (battery voltage low) must not be current or the diagnostic will not run.
Action Taken When The DTC Sets
The switch command will be ignored until the switch command again changes state or the ignition cycles from OFF to RUN.
Conditions For Clearing The MIL/DTC
| • | This DTC is changed from current to history when either of the following actions occur: |
| - | The window up input cycles off. |
| - | The power mode is changed from OFF to RUN. |
| • | The history DTC clears 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. |
| • | When DTC B2204 is current, cycle the ignition switch from OFF to RUN. |
| If the DTC is still present, perform the following diagnostic procedure. |
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.
-
This step inspects for other current set DTCs.
-
This step verifies the operation of the rear door power window switches.
-
This step tests CKT 1185 (WHT) for a short to ground.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
Did you perform the Power Door 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 1185 (WHT) 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 right 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 1185 (WHT). Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | -- | Go to Step 8 | -- |
8 |
Are all of the DTCs cleared? | -- | -- |
