B3250

DTC B3250

Diagnostic Instructions

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

DTC Descriptor
DTC B3250
- Power Sliding Door Position Signal Circuit

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 switch from 0.01-4.5 volts as the PSD is moving.

Conditions for Running the DTC

A DTC B3250 may be set whenever the PSD is in motion.

Conditions for Setting the DTC

The PSDM does not detect the optical sensor pulses while the PSD is opening or closing.

Action Taken When the DTC Sets

* The PSDM will attempt to operate the PSD and stop if the condition is current.
* The PSDM sets a DTC B3250.

Conditions for Clearing the DTC

* This DTC will change from current to history when the fault is no longer present.
* A history DTC will clear after 100 consecutive ignition cycles if the condition for the malfunction is no longer present.
* The technician issues a scan tool CLEAR DTCs command.

Reference Information
Schematic Reference

Sliding Door Schematics (Sliding Door Schematics)
Connector End View Reference

Component Connector End Views (Connector Views)
Description and Operation

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

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for Scan Tool Information

Circuit/System Verification

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

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector X2 at the appropriate sliding door module.
2. Ignition ON, test for 4.5-5.5 volts between the sliding door sensor voltage reference circuit terminal 12 and ground.

• If greater or less than the specified range, replace the appropriate sliding door module.

3. Ignition OFF, test less than 3 ohms of resistance between the sliding door sensor low reference circuit 13 and ground.

• If greater that the specified range, replace the appropriate sliding door module.

4. Ignition ON, test for 4.5-5.5 volts betwen the sliding door sensor voltage reference circuit terminal 12 and sliding door sensor 1 signal terminal 10.

• If greater or less than the specified range, replace the appropriate sliding door module.

5. Test for 4.5-5.5 volts between the sliding door sensor voltage reference circuit terminal 12 and sliding door sensor 2 signal terminal 11.

• If greater or less than the specified range, replace the appropriate sliding door module.

6. If all readings test normal, replace the appropriate sliding door motor assembly.

Repair Instructions

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

* Rear Side Door Actuator Control Module Replacement (with E58) (Service and Repair)Rear Side Door Actuator Control Module Replacement (with E59) (Service and Repair)
* Power Sliding Door Motor Clutch Replacement (RPO E58) (Service and Repair)Power Sliding Door Motor Clutch Replacement (RPO E59) (Service and Repair)