The power sliding door module (PSDM) monitors the door position at all times including during manual operation. The PSDM supplies the power and ground to operate the power sliding door (PSD) motor and clutch. The direction of the motor rotation is determined by which of the motor control circuits is supplied 12 volts and which is grounded. The PSDM varies the current flow through the motor ground circuit to control the speed of the motor as necessary. The clutch enables the PSD to be operated manually when de-energized, or by the motor when energized. The PSDM uses the PSD detent switch to determine when the door is latched, ajar, or open. The detent switch is part of the sliding door lock assembly. The detent switch signal circuit is supplied 12 volts through a resistor within the module. The signal circuit is briefly pulled to ground as the door moves from latched to ajar while opening, or from ajar to latched while closing. The detent switch signal and ground circuits, along with all other PSD circuits, are connected to the body harness through the sliding door contact plungers and B-Pillar contact pads when the plungers and pads are in contact with one another. The unlatch actuator is responsible for latching and unlatching the PSD. When latched, the PSD is in the fully closed and tightly sealed position. When unlatched, the PSD has been released from the tightly closed position to an ajar position, from which it can then be opened. The unlatch actuator is controlled by the PSDM. When the PSD is closed and a PSD switch or keyless entry transmitter PSD button is pressed, the PSDM interprets this input as a sliding door unlatch request. In response, the PSDM momentarily supplies battery positive voltage through the sliding door latch motor control circuit to the unlatch actuator. Once the unlatch actuator has released the PSD to the ajar position, the PSD can then be partially or fully opened. When the PSD is operated to the closed position, the unlatch actuator is mechanically moved back to the latched position. As the actuator becomes latched, it mechanically cinches the PSD to the tightly closed and sealed position. When the PSD is manually opened or closed, the latch or unlatch function of the actuator occurs manually as the PSD is opened or closed. The PSDM uses position sensors to monitor the sliding door position at all times. The position sensors require a 5-volt reference and reference return from the PSDM. There are also 2 signal circuits from each position sensor to each PSDM. The sensors send pulses through both signal circuits to the PSDM whenever the sliding door is in motion. The sensor pulses allow the PSDM to calculate the position of the sliding door at all times.

Manually open and close the PSD slowly in order to determine if the door operates smoothly and without excessive resistance.

Inspect the PSD plungers and corresponding B-Pillar pads for the following conditions:

Schematic Reference

Sliding Door Schematics

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

1. Ignition ON, transaxle in Park, command all doors to UNLOCK by pressing the door lock switch on the driver door. All doors should perform the UNLOCK function.

⇒	If the a power sliding door fails to UNLOCK, refer to Power Door Locks Inoperative - Passenger Door.

2. Observe the scan tool Vehicle In Park parameter while moving the shifter selector from Park to Drive, the parameter should change from Yes to No.

⇒	If the value is always NO, refer to Invalid Park Signal.

3. Observe the scan tool PSD System Enable Switch parameters while using the appropriate door enable/disable switch in the overhead console. The parameter should change between On and Off.

⇒	If the value does not change, refer to Power Sliding Door (PSD) Inoperative from One Switch.

4. Observe the scan tool PSD Front Control Switch parameters while pressing and releasing the door open/close switch in the overhead console. The parameter should change between Active and Inactive

⇒	If the value does not change, refer to Power Sliding Door (PSD) Inoperative from One Switch.

5. Command the power sliding door to UNLATCH with a scan tool. The power sliding door should perform the UNLATCH function.

⇒	If the power sliding door does not UNLATCH, refer to Power Sliding Door Latch Malfunction.

6. Observe the scan tool PSD Detent Switch parameter while manually opening and closing the power sliding door. The parameter should change from Active to Inactive.

⇒	If the value does not change, refer to DTC B1292, B1293, or B1294.

7. Observe the scan tool PSD Position Sensor 1 and PSD Position Sensor 2 parameters while manually opening and closing the power sliding door. The counts should vary while the sliding door is opening and closing.

⇒	If the counts do not vary, refer to DTC B3250 and DTC B1395.

8. Command the power sliding door to OPEN and CLOSE with a scan tool. The power sliding door should fully OPEN and fully CLOSE without binding or overcinching.

⇒	If the power sliding door is binding or overcinching, refer to Sliding Rear Side Door Adjustment.

⇒	If the power sliding door does not fully OPEN or fully CLOSE, refer to Rear Side Door Actuator Control Module Programming and Setup.

⇒	If the power sliding door closes and immediately re-opens, refer to Power Sliding Door (PSD) Closes and Re-Opens.

⇒	If the power sliding door is inoperative, refer to Power Sliding Door Inoperative.

Invalid Park Signal

1. Ignition ON, shift the transaxle into Park, verify the scan tool Vehicle in Park parameter is Yes.

⇒	If not the specified value, test the Park/Neutral Position Park Signal circuit terminal 3 for an open/high resistance. If the circuit tests normal, replace the body control module (BCM).

2. If all circuits test normal, replace the appropriate PSDM.

Power Sliding Door Latch Malfunction

1. Ignition OFF, disconnect the C1 harness connector at the appropriate door contact plate.
2. Test for less than 10 ohms between the ground circuit terminal D and ground.

⇒	If greater than the specified range, test the ground circuit terminal D for an open/high resistance.

3. Connect a test lamp between the control circuit terminal G and ground.
4. Ignition ON, command the sliding door unlatch actuator to UNLATCH with a scan tool. The test lamp should illuminate during the UNLATCH command.

⇒	If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal replace the PSDM.

⇒	If the test lamp is always OFF, test the control circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the PSDM.

5. Ignition OFF, connect the C1 harness connector at the door contact plate and close the door. Disconnect the harness connector at sliding door unlatch actuator.
6. Test for less than 10 ohms between the ground circuit terminal A and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the door contact plate.

7. Connect a test lamp between the control circuit terminal B and ground.
8. Ignition ON, command the sliding door unlatch actuator to UNLATCH with a scan tool. The test lamp should illuminate during the UNLATCH command.

⇒	If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, replace the door contact plate.

⇒	If the test lamp is always OFF, test the control circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the door contact plate.

9. If the circuits test normal, test or replace the sliding door unlatch actuator.

Power Sliding Door Inoperative

1. Ignition OFF, disconnect the C1 harness connector at the appropriate PSDM.
2. Test for less than 10 ohms between the ground circuit terminal 1 and ground.

⇒	If greater than the specified range, test the ground circuit for an open/high resistance.

3. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 6 and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

4. Verify that a test lamp illuminates between the B+ circuit terminal 14 and ground.

⇒	If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.

5. Ignition OFF, connect the C1 harness connector at the PSDM and disconnect the C460 inline connector.
6. Connect a test lamp between the control circuit terminal A and the control circuit terminal B.
7. Ignition ON, manually open the sliding door to the mid travel position and command the power sliding door to OPEN and CLOSE with a scan tool. The test lamp should illuminate when commanding the OPEN and CLOSE states.

⇒	If the test lamp remains OFF during either of the commands, test either control circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the PSDM.

⇒	If the test lamp is always ON, test either control circuit for a short to voltage. If the circuits test normal, replace the PSDM.

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

Sliding Door Unlatch Actuator

1. Ignition OFF, disconnect the harness connector at the appropriate sliding door unlatch actuator.
2. Install a 15A fused jumper wire between the control terminal B and 12V. Install a jumper wire between the ground terminal A and ground.
3. The sliding door unlatch actuator should perform the UNLATCH function.

⇒	If the function does not perform as specified, replace the sliding door unlatch actuator.

Cable Motor

1. Ignition OFF, disconnect the C460 inline harness connector.
2. Install a 15A fused jumper wire between the control circuit terminal A and 12V. Momentarily install a jumper wire between the control circuit terminal B and ground. The cable motor should perform the OPEN or CLOSE function.

⇒	If the function does not perform as specified, replace the sliding door motor assembly.

3. Reverse the jumper wires; the cable motor should perform the CLOSE or OPEN function.

⇒	If the function does not perform as specified, replace the sliding door motor assembly.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.