Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B3275 02: Window Express UP or Down Circuit Short to GroundDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Driver Window Motor B+ | 1 | 1 | -- | -- |
LR Window Motor B+ | 1 | 1 | -- | -- |
Passenger Window Motor B+ | 1 | 1 | -- | -- |
RR Window Motor B+ | 1 | 1 | -- | -- |
LR Window Switch Down Signal | B3165 02 | 2 | 2 | -- |
RR Window Switch Down Signal | B3165 02 | 2 | 2 | -- |
LR Window Switch Up Signal | B3160 02 | 2 | 2 | -- |
Passenger Window Switch Up Signal | B3160 02 | 2 | 2 | -- |
Passenger Window Switch Down Signal | B3165 02 | 2 | 2 | -- |
RR Window Switch Up Signal | B3160 02 | 2 | 2 | -- |
LR Window Switch Express Signal | B3275 02 | 2 | 2 | -- |
Passenger Window Switch Express Signal | B3275 02 | 2 | 2 | -- |
RR Window Switch Express Signal | B3275 02 | 2 | 2 | -- |
LF Window Motor Down Signal | 1 | 1 | 1 | -- |
LR Window Motor Down Signal | 1 | 1 | 1 | -- |
RF Window Motor Down Signal | 1 | 1 | 1 | -- |
RR Window Motor Down Signal | 1 | 1 | 1 | -- |
LF Window Motor Up Signal | 1 | 1 | 1 | -- |
LR Window Motor Up Signal | 1 | 1 | 1 | -- |
RF Window Motor Up Signal | 1 | 1 | 1 | -- |
RR Window Motor Up Signal | 1 | 1 | 1 | -- |
Front Passenger Window Switch Ground | -- | 2 | -- | -- |
LR Window Switch Ground | -- | 2 | -- | -- |
RR Window Switch Ground | -- | 2 | -- | -- |
Driver Window Motor Ground | -- | 1 | -- | -- |
LR Window Motor Ground | -- | 1 | -- | -- |
Passenger Window Motor Ground | -- | 1 | -- | -- |
RR Window Motor Ground | -- | 1 | -- | -- |
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Circuit Description
The express Up function of the power windows is monitored and controlled by the front and rear door modules and the individual window sensors. Each power window motor has a window sensor mounted to it. Each door module communicates with its power window sensor via the power window motor up/down command lines. The power window motors communicate with the door modules via the power window status circuit. The window sensors detect differences in the window motors electrical pulses to determine if there is an obstruction to the travel of the window glass. The power window motors will disable the express up movement of a window in the event that an object has obstructed the windows upward movement.
The power window status circuit is a unique 1-way serial data link between the door module and its power window sensor. The power window motors communicate with there associated door modules by changing the state from high to low over the power window status circuit.
Conditions for Running the DTC
| • | The PDM, LRDM, or RRDM must be powered. |
| • | DTC B1325 must not be current. |
Conditions for Setting the DTC
The PDM, LRDM, or RRDM detects an express down command for greater than 30 seconds.
Action Taken When the DTC Sets
The PDM, LRDM, or RRDM will ignore the express down input from the affected window switch.
Conditions for Clearing the DTC
| • | The DTC will be current for as long as the fault is present. |
| • | When the fault is no longer present, the DTC will be a history DTC. |
| • | A history DTC will clear after 50 ignition cycles. |
Reference Information
Schematic Reference
Connector End View Reference
Description and Operation
Power Windows Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
Ignition ON, observe the scan tool Window Switch parameter while using the power window switch. The parameter should change from Idle to Up, Down and Express Down.
Circuit/System Testing
- Ignition OFF, disconnect the harness connector at the appropriate passenger window switch.
- Ignition ON, verify the scan tool Window Switch parameter is Idle.
- If all circuits test normal, test or replace the passenger window switch.
| ⇒ | If not the specified value, test the signal circuit terminal 5 for a short to ground. If the circuit tests normal, replace the door control module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
| • | Control Module References for PDM, LRDM, or RRDM replacement, setup, and programming |
