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. |
DTC Descriptor
DTC B3250: Power Sliding Door Position Signal CircuitDiagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Power Sliding Door Module B+ | B1292, B1395 | B1292, B1395 | -- | -- |
Left/Right Sliding Door Open/Close Switch Signal | 2 | 2 | 2 | -- |
Left/Right Door Enable Switch Signal | 1, 2 | -- | 2 | -- |
Left/Right Sliding Door Latch Motor Control | 1 | 1 | 1 | -- |
Park/Neutral Position Park Signal | -- | 1 | -- | -- |
Left/Right Sliding Door Clutch Control | B1292, B1293, B1294 | B1292, B1293, B1294 | B1293 | -- |
Left/Right Sliding Door Motor Open Control | B1292 | B1292 | B1292 | -- |
Left/Right Sliding Door Motor Close Control | B1292 | B1292 | B1292 | -- |
Left/Right Sliding Door Detent Switch Signal | 1 | B1294 | 1 | -- |
Left/Right Sliding Door Sensor Voltage Reference | 1 | B1395 | 1 | -- |
Left/Right Sliding Door Sensor Low Reference | 1 | B1395 | 1 | -- |
Left/Right Sliding Door Sensor 1 Signal | 1 | B1395 | 1 | -- |
Left/Right Sliding Door Sensor 2 Signal | 1 | B1395 | 1 | -- |
Left/Right Sliding Door Clutch Ground | -- | B1292, B1293, B1294 | 1 | -- |
PSDM Ground | -- | 1 | 1 | -- |
1. Power Sliding Door Malfunction 2. Power Sliding Door Open/Close Switch Inoperative | ||||
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 signals vary from 0.01-4.5 volts as the PSD is moving.
Conditions for Running the DTC
When the PSDM is powered up and has been commanded to operate the power sliding door.
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 power sliding door will unlatch and will open approximately 16mm (6 inches) and stop.
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. |
Diagnostic Aids
DTC B1292, B1293, B1294, B1395, B1420, B3250, B3260 or any combination of these DTCs may be set due to an overcinch condition in which the sliding door motor may continue to run for up to 3 seconds after the door is fully closed. Reference any power sliding door overcinching bulletins first before performing any extensive power sliding door diagnostics.
Reference Information
Schematic Reference
Connector End View Reference
Power Door Systems Connector End Views
Description and Operation
Power Sliding Door (PSD) Description and Operation
Electrical Information Reference
Scan Tool Reference
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
- Ignition OFF, disconnect the C2 harness connector at the appropriate power sliding door module.
- Ignition OFF, test for less than 10 ohms between the low reference terminal 13 at the power sliding door module and ground.
- Ignition ON, test for 4.8-5.2 volts between 5-volt reference terminal 12 at the power sliding door module and ground.
- Test for 4.8-5.2 volts between the sensor 1 signal terminal 10 and low reference terminal 13 at the power sliding door module.
- Test for 4.8-5.2 volts between the sensor 2 signal terminal 11 and low reference terminal 13 at the power sliding door module.
- If all circuits test normal, test or replace the sliding door motor assembly.
| ⇒ | If greater than the specified range, replace the power sliding door module. |
| ⇒ | If greater than the specified value, replace the power sliding door module. |
| ⇒ | If not the specified range, replace the power sliding door module. |
| ⇒ | If not the specified range, replace the power sliding door module. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for PSDM replacement, programming, and setup.
