B3250

DTC B3250

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptor
DTC B3250
- Power Sliding Door Position Signal Circuit

Diagnostic Fault Information






Circuit/System Description

The power sliding door control module (PSDM) uses an optical sensor to monitor the power sliding door (PSD) position at all times. The optical sensor requires a 5-volt reference circuit and a reference return circuit from the PSDM. There are also 2 signal circuits from the PSDM to the optical sensor. The optical sensor sends pulses through both signal circuits to the PSDM whenever the PSD is in motion. The optical sensor pulses allow the PSDM to calculate the position of the PSD at all times. The optical sensor signal circuits vary from 0.01-4.5 volts as the PSD is moving.

Conditions for Running the DTC

Whenever the power sliding door is in motion.

Conditions for Setting the DTC

The PSDM does not detect the optical sensor pulses while the power sliding door is opening or closing.

Action Taken When the DTC Sets

The affected power sliding door will be inoperative.

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

Sliding Door Schematics Sliding Door Schematics
Connector End View Reference

Component Connector End Views
Description and Operation

Power Sliding Door (PSD) Description and Operation Description and Operation
Electrical Information Reference

* Circuit Testing Circuit Testing
* Connector Repairs Connector Repairs
* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections
* Wiring Repairs Wiring Repairs

Scan Tool Reference

Control Module References Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool PSD Position Sensor 1 and PSD Position Sensor 2 parameters while manually opening and closing the sliding door. The counts should vary while the sliding door is opening and closing.

Circuit/System Testing

1. Ignition OFF, disconnect the X2 harness connector at the appropriate PSDM.
2. Ignition OFF, test for less than 1 ohm between the low reference terminal 13 at the PSDM and ground.

• If greater than the specified range, replace the PSDM.

3. Ignition ON, test for 4.8-5.2 volts between 5-volt reference terminal 12 at the PSDM and ground.

• If greater than the specified value, replace the PSDM.

4. Test for 4.8-5.2 volts are between sensor 1 signal terminal 10 and low reference terminal 13 at the PSDM.

• If not the specified range, replace the PSDM.

5. Test for 4.8-5.2 volts between sensor 2 signal terminal 11 and low reference terminal 13 at the PSDM.

• If not the specified range, replace the PSDM.

6. If all circuits test normal, test or replace the sliding door motor assembly.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the diagnostic procedure.

Control Module References Control Module References for PSDM replacement, programming, and setup.