Adjustable Pedals Malfunction (without AN3)
Adjustable Pedals Malfunction (without AN3)
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.
Diagnostic Fault Information
Circuit/System Description
Voltage to the adjustable pedal switch is supplied through the park enable relay while in a de-energized state. The park enable relay is controlled by the body control module (BCM) through a high side drive control circuit and will be energized whenever the ignition is in the accessory, run, or crank positions and the transmission is in reverse or the cruise control is engaged. The adjustable pedals switch controls the adjustable pedals relay by applying battery voltage to one of the coils. In an inactive state both of the relay switch contacts are closed to ground and when one of the relay coils is energized its switch contact is closed to battery voltage.
Reference Information
Schematic Reference
Adjustable Pedal Schematics Electrical Diagrams
Connector End View Reference
Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)
Description and Operation
Adjustable Pedals Description and Operation (with Memory) Adjustable Pedals (with Memory)Adjustable Pedals Description and Operation (w/o Memory) Adjustable Pedals (w/o Memory)
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
1. Ignition ON, verify DTC B3631 is not set.
• If the DTC is set, refer to DTC B3631 B3631.
2. Command the adjustable pedals to move forward and rearward. The pedals should move in the commanded direction.
Circuit/System Testing
1. Ignition OFF, disconnect the X2 harness connector at the left IP junction block.
2. Test for less than 10 ohms between the ground circuit terminal D1 and ground.
• If greater than the specified range, test the ground circuit for an open/high resistance.
3. Ignition ON, verify the test lamp illuminates between the B+ circuit terminal E2 and ground.
• If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance. If the circuit tests normal and the circuit fuse is open, test the motor control circuits and the switch control circuits for a short to ground.
4. Transmission in reverse, verify that a test lamp illuminates between the control circuit terminal E3 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the BCM.
5. Ignition OFF, connect the X2 harness connector at the left IP junction block and disconnect the harness connector at the adjustable pedal switch.
6. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 11 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the left IP junction block.
7. Ignition OFF, connect the harness connector at the adjustable pedal switch and disconnect the X2 harness at the left IP junction block.
8. Ignition ON, verify a test lamp does not illuminate between the control circuit terminals listed below and ground:
* Control circuit terminal E1
* Control circuit terminal G1
• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the adjustable pedal switch.
9. Adjustable pedal switch in the FWD position, verify a test lamp illuminates between the control circuit terminal G1 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the adjustable pedal switch.
10. Adjustable pedal switch in the RWD position, verify a test lamp illuminates between the control circuit terminal E1 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, test or replace the adjustable pedal switch.
11. Ignition OFF, connect the X2 harness connector at the left IP junction block and disconnect the harness connector at the adjustable pedal assembly.
12. Test for less than 10 ohms between the control circuit terminals listed below and ground:
* Control circuit terminal 4
* Control circuit terminal 5
• If greater than the specified range, test the control circuit for an open/high resistance. If the circuit tests normal, replace the left IP junction block.
13. Ignition ON, verify a test lamp does not illuminate between the control circuit terminals listed below and ground:
* Control circuit terminal 4
* Control circuit terminal 5
• If the test lamp illuminates, test the control circuit for a short to voltage. If the circuit tests normal, replace the left IP junction block.
14. Adjustable pedal switch in the FWD position, verify a test lamp illuminates between the control circuit terminal 5 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground. If the circuit tests normal, replace the left IP junction block.
15. Adjustable pedal switch in the RWD position, verify a test lamp illuminates between the control circuit terminal 4 and ground.
• If the test lamp does not illuminate, test the control circuit for a short to ground. If the circuit tests normal, replace the left IP junction block.
16. If all circuits test normal, test or replace the adjustable pedal assembly.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
* Accessory Switch Replacement (without RPO SLT) Accessory Switch Replacement (without RPO SLT)Accessory Switch Replacement (with RPO SLT) Accessory Switch Replacement (with RPO SLT)
* Brake Pedal Assembly Replacement Brake Pedal Assembly Replacement
* Instrument Panel Electrical Center or Junction Block Replacement - Left Side Instrument Panel Electrical Center or Junction Block Replacement - Left Side
* Control Module References Control Module References for BCM replacement, programming and setup