B1294
DTC B1292, B1293, or B1294
Diagnostic Instructions
* Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Initial Inspection and Diagnostic Overview
* Review Strategy Based Diagnosis for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions provides an overview of each diagnostic category.
DTC Descriptor
DTC B1292
- Power Sliding Door Motor Control Circuit
DTC B1293
- Power Sliding Door Clutch Control Circuit
DTC B1294
- Power Sliding Door Detent Switch Circuit
Diagnostic Fault Information
Circuit/System Description
The power sliding door control module (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 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.
Conditions for Running the DTC
Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
B1292
The PSDM detects a short to voltage or short to ground in the left/right sliding door motor open control or left/right sliding door motor close control circuit.
B1292 and B1293
The PSDM detects an open/high resistance in the left/right sliding door motor open control or left/right sliding door motor close control circuit.
B1292, B1293, and B1294
The PSDM detects a short to ground in the left/right sliding door clutch control or an open/high resistance in the left/right sliding door clutch control or ground.
B1293
A PSDM detects a short to voltage in the left/right sliding door clutch control.
B1294
* The PSDM does not detect the detent switch signal pulled low between the primary latched and ajar positions while attempting to power open or close.
* The conditions above must be present for more than 0.3 seconds
Action Taken When the DTC Sets
The PSDM will attempt to activate the sliding motor assembly, but the PSD will be inoperative.
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.
Circuit/System Verification
Ignition ON, command the appropriate power sliding door to open and close by pressing the appropriate open/close switch on the overhead console multifunction switch. The appropriate power sliding door should open and close as commanded.
If the affected power sliding door fails to function and sets B1292 or B1292 and B1293, refer to Sets B1292 or B1292 and B1293. B1292
If the affected power sliding door operates as commanded but is extremely difficult to open in the manual mode and sets B1293, refer to Sets B1293. B1293
If the affected power sliding door closes, re-opens and sets B1294, refer to Sets B1294.
If the affected power sliding door fails to function and sets B1292, B1293 and B1294, refer to Sets B1292, B1293 and B1294. B1292
Circuit/System Testing
Sets B1292 or B1292 and B1293
1. Ignition OFF, disconnect the harness connector C2 at the appropriate PSDM.
2. Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal 1 and ground.
• If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the appropriate PSDM.
3. Ignition OFF, test for less than 1.0 ohm of resistance between the control circuit terminal 8 and ground.
• If greater than the specified range, test the control circuit for a short to voltage or an open/high resistance. If the circuits test normal, replace the appropriate PSDM
4. Connect a test lamp between control circuit terminal 1 and control circuit terminal 8.
5. Command the appropriate power sliding door to OPEN and CLOSE with a scan tool. The test lamp should turn briefly ON when commanding the OPEN and CLOSE states.
• If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the appropriate PSDM.
6. If all circuits test normal, test or replace the appropriate sliding door motor assembly.
Sets B1293
1. Ignition OFF, disconnect the harness connector C2 at the appropriate PSDM.
2. Connect a test lamp between control circuit terminal 7 and ground.
3. Command the appropriate power sliding door to OPEN and CLOSE with a scan tool. The test lamp should turn ON and OFF when commanding the OPEN and CLOSE states.
• If the test lamp always ON during either of the commands, test the control circuit for a short to voltage. If the circuits test normal, replace the appropriate PSDM.
4. If all circuits test normal, test or replace the appropriate sliding door motor assembly.
Sets B1294
1. Ignition OFF, disconnect the harness connector C1 at the appropriate PSDM.
2. Ignition OFF, test for less than 1.0 ohm of resistance between the ground circuit terminal C and ground.
• If greater than the specified range, test the ground circuit terminal C for an open/high resistance.
3. Ignition OFF, reconnect the harness connector C1 at the appropriate PSDM. Close the appropriate door and disconnect the harness connector C2 at the appropriate door contact plate. Test for less than 1.0 ohm of resistance between the ground circuit terminal C and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance, if the circuit tests normal, replace the appropriate door contact plate.
4. Ignition OFF, disconnect the harness connector at appropriate sliding door detent switch.
5. Install a 3A fused jumper wire between the signal circuit terminal A and ground. Verify the scan tool PSD Detent Switch parameter is ACTIVE.
• If not the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the appropriate PSDM.
6. If all circuits test normal, test or replace the appropriate sliding door detent switch.
Sets B1292, B1293 and B1294
1. Ignition OFF, disconnect the harness connector at the appropriate PSDM.
2. Ignition OFF, test for less than 5.0 ohms of resistance between the control circuit terminal 7 and ground.
• If greater than the specified range, test the control circuit for an open/high resistance. If the circuits test normal, replace the appropriate PSDM.
3. Ignition OFF, test for less than 5.0 ohms of resistance between the control circuit terminal 14 and ground.
• If greater than the specified range, test the control circuit for an open/high resistance. If the circuits test normal, replace the appropriate PSDM
4. Connect a test lamp between control circuit terminal 7 and control circuit terminal 14.
5. Command the appropriate power sliding door to OPEN and CLOSE with a scan tool. The test lamp should turn ON when commanding the OPEN and CLOSE states.
• If the test lamp remains OFF during either of the commands, test for a short to ground on either control circuit. If the circuits test normal, replace the appropriate PSDM.
6. If all circuits test normal, replace the appropriate sliding door motor assembly.
Component Testing
Clutch
1. Install a 15-amp fused jumper wire between the control terminal 7 and 12 volts. Momentarily install a jumper wire between the ground terminal 14 and ground. The appropriate clutch motor should engage.
• If the function does not perform as specified, replace the appropriate sliding door motor assembly.
2. Remove the jumper wires, the appropriate clutch should disengage.
• If the function does not perform as specified, replace the appropriate sliding door motor assembly.
Sliding Door Detent Switch
1. Ignition OFF, disconnect the harness connector at the appropriate sliding door detent switch.
2. Test for infinite resistance between the signal circuit terminal A and the ground circuit terminal B with the switch in the open position.
• If not the specified value, replace the sliding door detent switch.
3. Test for less than 1.0 ohms between the signal terminal A and the ground terminal B with the switch in the closed position.
• If greater than the specified range, replace the sliding door detent switch.
Cable Motor
1. Install a 15-amp fused jumper wire between the control terminal 1 and 12 volts. Momentarily install a jumper wire between the control terminal 8 and ground. The appropriate cable motor should perform the OPEN or CLOSE function.
• If the function does not perform as specified, replace the appropriate sliding door motor assembly.
2. Reverse the jumper wires. The appropriate cable motor should perform the CLOSE or OPEN function.
• If the function does not perform as specified, replace the appropriate sliding door motor assembly.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Verification Tests
* Rear Side Door Actuator Control Module Programming and Setup
* Power Sliding Door Motor Clutch Replacement (E58 Right Hand) Power Sliding Door Motor Clutch Replacement (E59 Left Hand)
* Rear Side Door Actuator Control Module Replacement (with E58) Rear Side Door Actuator Control Module Replacement (with E59)
* Sliding Door Jamb Contact Plate Replacement