Adjustable Pedal System Cadillac Escalade GMT900

Fastener Tightening Specifications

Scheme 1

Scheme 2

DIAGNOSTIC CODE INDEX

DIAGNOSTIC CODE INDEX

Diagnostic Instructions

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

Diagnostic Fault Information

Circuit/System Description

The adjustable pedals forward and rearward switches are inputs to the memory seat module (MSM). The MSM supplies the switch assembly with a battery positive reference voltage. When the switch is operated to the forward or rearward direction, battery positive voltage is applied to the forward or rearward switch signal inputs.

Conditions for Running the DTC

System voltage is 9-16 volts.

Conditions for Setting the DTC

The forward and rearward switch signal circuits are active at the same time.

Action Taken When the DTC Sets

The adjustable pedals will be disabled.

Conditions for Clearing the DTC

1. The DTC becomes history when the conditions for setting the DTC are no longer present.
2. The history DTC clears after 100 malfunction-free ignition cycles.

Reference Information

Schematic Reference

Adjustable Pedal Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Adjustable Pedals Description and Operation (with Memory) or Adjustable Pedals Description and Operation (w/o Memory)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Verification

Ignition ON, observe the scan tool Pedal Forward Switch and Pedal Aft Switch parameters while cycling the adjustable pedal switch between the FWD and RWD position. The appropriate parameter should change between Active and Inactive as commanded.

Circuit/System Testing

1. Disconnect the harness connector at the adjustable pedal switch.
2. Ignition ON, test for 11.8-12.2 volts between the appropriate 12-volt reference circuit listed below and ground: X88/Z88 - terminal 11 Z75 - terminal 5 If greater than the specified range, test the 12-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM. If less than the specified range, test the 12-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
3. Verify the scan tool Pedal Forward Switch parameter is Inactive. If not the specified value, test the appropriate signal circuit terminal listed below for a short to voltage. If the circuit tests normal, replace the MSM. X88/Z88 - terminal 12 Z75 - terminal 6
4. Verify the scan tool Pedal Aft Switch parameter is Inactive. If not the specified value, test the appropriate signal circuit terminal listed below for a short to voltage. If the circuit tests normal, replace the MSM. X88/Z88 - terminal 10 Z75 - terminal 4
5. Install a 3A fused jumper wire between the appropriate signal circuit terminal listed below and B+. The scan tool Pedal Forward Switch parameter should be Active. X88/Z88 - terminal 12 Z75 - terminal 6 If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
6. Install a 3A fused jumper wire between the appropriate signal circuit terminal listed below and B+. The scan tool Pedal Aft Switch parameter should be Active. X88/Z88 - terminal 10 Z75 - terminal 4 If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
7. If all circuits test normal, test or replace the adjustable pedal switch.

Component Testing

X88/Z88

1. Ignition OFF, disconnect the harness connector at the adjustable pedal switch.
2. Test for infinite resistance between the 12-volt reference terminal 11 and the signal terminals listed below: Terminal 10 Terminal 12 If not the specified value, replace the adjustable pedal switch.
3. Adjustable pedal switch in the FWD position, test for less than 2 ohms between the 12-volt reference terminal 11 and the signal terminal 12. If greater than the specified range, replace the adjustable pedal switch.
4. Adjustable pedal switch in the RWD position, test for less than 2 ohms between the 12-volt reference terminal 11 and the signal terminal 10. If greater than the specified range, replace the adjustable pedal switch.

Z75

1. Ignition OFF, disconnect the harness connector at the adjustable pedal switch.
2. Test for infinite resistance between the 12-volt reference terminal 5 and the signal terminals listed below: Terminal 4 Terminal 6 If not the specified value, replace the adjustable pedal switch.
3. Adjustable pedal switch in the FWD position, test for less than 2 ohms between the 12-volt reference terminal 5 and the signal terminal 6. If greater than the specified range, replace the adjustable pedal switch.
4. Adjustable pedal switch in the RWD position, test for less than 2 ohms between the 12-volt reference terminal 5 and the signal terminal 4. If greater than the specified range, replace the adjustable pedal switch.

Repair Procedures

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Accessory Switch Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges) or «Accessory Switch Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges)
2. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for the MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The memory seat module (MSM) monitors the location of the adjustable pedals using the adjustable pedals position sensor. The adjustable pedals position sensor is supplied with 5-volt reference and ground circuits from the MSM. The position sensor signal circuit is referenced from ground within the MSM. The signal voltage monitored by the MSM ranges from 0.45-4.55 volts.

System voltage to the MSM must be 9-16 volts.

The position sensor input to the MSM is not within the 0.45-4.55 volt range.

Memory recall functions will be suspended.

1. The DTC becomes history when the conditions for setting the DTC are no longer present.
2. The history DTC clears after 100 malfunction-free ignition cycles.

Schematic Reference

Adjustable Pedal Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Adjustable Pedals Description and Operation (with Memory) or Adjustable Pedals Description and Operation (w/o Memory)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition OFF, disconnect the harness connector at the adjustable pedal motor.
2. Ignition OFF, test for less than 10 ohm between the low reference circuit terminal 3 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground. If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM. If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the scan tool Pedal Position parameter is less than 0.45 volt. If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3A fused jumper wire between the signal circuit terminal 2 and the 5-volt reference circuit terminal 1. Verify the scan tool Pedal Position parameter is greater than 4.55 volts. If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
6. If all circuits test normal, test or replace the adjustable pedal motor.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Brake Pedal Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system)
2. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for the MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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.

1. The ignition is ON.
2. The BCM attempts to energize the park enable relay.

The BCM detects a short to ground on the park enable relay control circuit while attempting to activate the output.

The output will be disabled.

1. The DTC becomes history when the conditions for setting the DTC are no longer present.
2. The history DTC clears after 100 malfunction-free ignition cycles.

Schematic Reference

Adjustable Pedal Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Adjustable Pedals Description and Operation (with Memory) or Adjustable Pedals Description and Operation (w/o Memory)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

Ignition ON, transmission in reverse, attempt to operate the adjustable pedals. The adjustable pedals should be disabled.

1. Ignition OFF, disconnect the X2 harness connector at the left IP junction block.
2. Ignition ON, 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.
3. If all circuits test normal, test or replace the left IP junction block.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Instrument Panel Electrical Center or Junction Block Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions)
2. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for BCM replacement, setup, and programming

Symptoms - Adjustable Pedals

1. If the vehicle is equipped with AAB (Memory Driver Convenience Package) perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) , before using the symptom table in order to verify that all of the following are true: There are no DTCs set. The control modules can communicate via the serial data link.
2. Review the system operation in order to familiarize yourself with the system functions. Refer to «Adjustable Pedals Description and Operation (with Memory)»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system__adjustable-pedals-description-and-operation-with) or «Adjustable Pedals Description and Operation (w/o Memory)»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system__adjustable-pedals-description-and-operation-wo) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the adjustable pedal system. Refer to «Checking Aftermarket Accessories»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__checking-aftermarket-accessories) .
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections .

Symptom List

Refer to Adjustable Pedals Inoperative (with AN3) or Adjustable Pedals Inoperative (without AN3) .

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

The adjustable pedals assembly is moved forward or backward by a motor which is fixed to the brake pedal actuator with a drive cable to the accelerator pedal actuator. The memory seat module (MSM) controls the adjustable pedals motor by applying battery voltage to one of the outputs and ground to the other. The adjustable pedals motor is bidirectional and the direction of the pedal assembly travel is determined by which of the motor control circuits is switched to battery positive voltage while the other is grounded. The adjustable pedals forward and rearward switches are inputs to the MSM. The MSM supplies the switch assembly with a 12-volt reference. When the switch is operated to the forward or rearward direction, battery positive voltage is applied to the forward or rearward switch signal inputs.

Schematic Reference

Adjustable Pedal Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Adjustable Pedals Description and Operation (with Memory) or Adjustable Pedals Description and Operation (w/o Memory)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Verify DTC B3604, B3605, or B3606 is not set. If any of the DTCs are set, refer to «Diagnostic Trouble Code (DTC) List - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-trouble-code-dtc-list) .
2. Ignition ON, observe the scan tool Pedal Forward Switch and Pedal Aft Switch parameters while cycling the adjustable pedal switch between the FWD and RWD position. The appropriate parameter should change between Active and Inactive as commanded. If the parameters do not change between the specified values, refer to Adjustable Pedal Switch Circuit Malfunction in «Circuit/System Testing»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system) .
3. Verify the scan tool Pedal Position parameter is between 0.45-4.55 volts. If not within the specified range, refer to Adjustable Pedal Position Sensor Circuit Malfunction in «Circuit/System Testing»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system) .
4. Command the adjustable pedals to move forward and rearward. The pedals should move in the commanded direction. If the pedals do not move in the commanded direction, refer to Adjustable Pedal Motor Circuit Malfunction in «Circuit/System Testing»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system) .

Adjustable Pedal Switch Circuit Malfunction

1. Disconnect the harness connector at the adjustable pedal switch.
2. Ignition ON, test for 11.8-12.2 volts between the appropriate 12-volt reference circuit listed below and ground: X88/Z88 - terminal 11 Z75 - terminal 5 If greater than the specified range, test the 12-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM. If less than the specified range, test the 12-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
3. Verify the scan tool Pedal Forward Switch parameter is Inactive. If not the specified value, test the appropriate signal circuit terminal listed below for a short to voltage. If the circuit tests normal, replace the MSM. X88/Z88 - terminal 12 Z75 - terminal 6
4. Verify the scan tool Pedal Aft Switch parameter is Inactive. If not the specified value, test the appropriate signal circuit terminal listed below for a short to voltage. If the circuit tests normal, replace the MSM. X88/Z88 - terminal 10 Z75 - terminal 4
5. Install a 3A fused jumper wire between the appropriate signal circuit terminal listed below and B+. The scan tool Pedal Forward Switch parameter should be Active. X88/Z88 - terminal 12 Z75 - terminal 6 If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
6. Install a 3A fused jumper wire between the appropriate signal circuit terminal listed below and B+. The scan tool Pedal Aft Switch parameter should be Active. X88/Z88 - terminal 10 Z75 - terminal 4 If not the specified value, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
7. If all circuits test normal, test or replace the adjustable pedal switch.

Adjustable Pedal Position Sensor Circuit Malfunction

1. Ignition OFF, disconnect the harness connector at the adjustable pedal motor.
2. Ignition OFF, test for less than 10 ohm between the low reference circuit terminal 3 and ground. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the MSM.
3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground. If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM. If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
4. Verify the scan tool Pedal Position parameter is less than 0.45 volt. If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the MSM.
5. Install a 3A fused jumper wire between the signal circuit terminal 2 and the 5-volt reference circuit terminal 1. Verify the scan tool Pedal Position parameter is greater than 4.55 volts. If less than the specified range, test the signal circuit for short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
6. If all circuits test normal, test or replace the adjustable pedal motor.

Adjustable Pedal Motor Circuit Malfunction

1. Ignition OFF, disconnect the X3 harness connector at the MSM.
2. Ignition ON, verify that a test lamp illuminates between the B+ circuit terminal 5 and ground. If the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.
3. Connect the X3 harness connector at the MSM and disconnect the harness connector at the electronic adjustable pedal assembly.
4. Ignition ON, test for 1.5-2.5 volts 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 a short to voltage. If the circuit tests normal, replace the MSM. If less than the specified range, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
5. Connect the test lamp between the control circuit terminal 4 and the control circuit terminal 5.
6. Command the adjustable pedals to move forward and rearward. The test lamp should illuminate each time the pedals are commanded to move. If the test lamp does not illuminate, replace the MSM.
7. If all circuits test normal, test or replace the electronic adjustable pedal assembly.

Perform Diagnostic Repair Verification the after completing the diagnostic procedure.

1. «Accessory Switch Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges) or «Accessory Switch Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges)
2. «Brake Pedal Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system)
3. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for MSM replacement, setup, and programming

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures) prior to using this diagnostic procedure.
2. Review «Strategy Based Diagnosis»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__strategy-based-diagnosis) for an overview of the diagnostic approach.
3. «Diagnostic Procedure Instructions»(/cadillac/escalade/gmt900-2006-2014/remont/oem-general-information/#vehicle-diagnostic-information-diagnostic-information-and-procedures__diagnostic-procedure-instructions) provides an overview of each diagnostic category.

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.

Schematic Reference

Adjustable Pedal Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Adjustable Pedals Description and Operation (with Memory) or Adjustable Pedals Description and Operation (w/o Memory)

Electrical Information Reference

1. «Circuit Testing»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__circuit-testing)
2. «Connector Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__connector-repairs)
3. «Testing for Intermittent Conditions and Poor Connections»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__testing-for-intermittent-conditions-and-poor)
4. «Wiring Repairs»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-diagnostic-information-and-procedures__wiring-repairs)

Scan Tool Reference

Control Module References for scan tool information

1. Ignition ON, verify DTC B3631 is not set. If the DTC is set, refer to «DTC B3631»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system) .
2. Command the adjustable pedals to move forward and rearward. The pedals should move in the commanded direction.

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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

1. «Accessory Switch Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges) or «Accessory Switch Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/gauges-instrument-panels/#instrument-panel-system-displays-gauges)
2. «Brake Pedal Assembly Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/memory-modules/#adjustable-pedal-system)
3. «Instrument Panel Electrical Center or Junction Block Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/ignition-switchsteering-lock/#wiring-systems-and-power-management-repair-instructions)
4. «Control Module References»(/cadillac/escalade/gmt900-2006-2014/remont/communication-devices/#programming-and-setup-all-systems__control-module-references) for BCM replacement, setup, and programming

The memory seat module monitors the locations of both pedal assemblies in order to prevent a step over condition from occurring. Any time adjustable pedal system components are replaced, such as a memory seat module or pedal position sensors, the system must be calibrated. The calibration procedure allows the memory seat module to store the position sensor value through the full range of pedal travel.

1. Install a scan tool.
2. Go to the Memory Seat Module, Special Functions menu.
3. Using the scan tool Output Controls operate the pedals to the full forward position.
4. Start the calibration procedure and allow the memory seat module to operate the pedals to the rearward stop and return to the forward stop without activating any switch inputs.

Removal Procedure

1. Remove the steering column from the vehicle. Refer to «Steering Column Replacement (Without HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (Without HP2 With Electric Tilt Column)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
2. Disconnect the electrical connectors from the following components: Adjustable pedal motor assembly Memory sensor connector, if equipped Brake pedal position sensor Stoplamp switch
3. Remove the accelerator pedal position sensor assembly. Refer to «Accelerator Pedal Position Sensor Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
4. Remove the left side floor air outlet duct. Refer to «Floor Air Outlet Duct Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
5. Remove the brake booster pushrod retainer bolt (1).
6. Remove the brake booster pushrod retainer (1).
7. Remove the stoplamp switch (1).
8. Disconnect the brake booster pushrod from the brake pedal pivot.
9. Remove the adjustable pedal bracket nuts (1).
10. Remove the adjustable pedal bracket bolt (1).
11. Position the brake booster forward until the studs are past the adjustable pedal bracket holes and support with heavy mechanics wire or equivalent.
12. Disconnect and position aside any wiring harnesses as necessary.
13. Remove the adjustable pedal assembly from the vehicle.

Installation Procedure

1. With the aid of an assistant, position the brake booster to the vehicle.
2. Install the adjustable pedal assembly to the vehicle.
3. Hand install the adjustable pedal bracket bolt (1).
4. Install the adjustable pedal bracket nuts (1) and tighten to 36 N.m (27 lb ft).
5. Tighten the adjustable pedal bracket bolt to 36 N.m (27 lb ft).
6. Apply a thin coat of high temperature grease GM P/N 12345994 (Canadian P/N 10953501) to the pushrod pin on the brake pedal.
7. Connect the brake booster pushrod to the brake pedal pivot.
8. Install the stoplamp switch (1).
9. Install the brake booster pushrod retainer (1). Rotate the retainer 360 degrees to ensure it is seated properly before tightening the retainer bolt.
10. Install the brake booster pushrod retainer bolt (1) and tighten to 10 N.m (89 lb in).
11. Install the accelerator pedal position sensor assembly. Refer to «Accelerator Pedal Position Sensor Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
12. Connect the electrical connectors to the following components: Adjustable pedal motor assembly Memory sensor connector, if equipped Brake pedal position sensor Stoplamp switch
13. Reposition and connect any wiring harnesses as necessary.
14. Install the steering column to the vehicle. Refer to «Steering Column Replacement (Without HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (HP2)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) or «Steering Column Replacement (Without HP2 With Electric Tilt Column)»(/cadillac/escalade/gmt900-2006-2014/remont/steering-column-switches/#steering-wheel-steering-column) .
15. Install the left side floor air outlet duct. Refer to «Floor Air Outlet Duct Replacement - Left Side»(/cadillac/escalade/gmt900-2006-2014/remont/automatic-hvac-system/#heating-ventilation-and-air-conditioning) .
16. Verify the correct operation of the adjustable pedals.

1. Remove the driver knee bolster. Refer to «Knee Bolster Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Knee Bolster Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
2. Remove the accelerator pedal position sensor assembly. Refer to «Accelerator Pedal Position Sensor Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
3. Remove the accelerator pedal bracket nuts.
4. Remove the adjustable pedal drive cable from the accelerator pedal actuator using the following procedure: Twist the cable housing counterclockwise. Compress the secondary locking tabs located below the twist and lock tabs with a pointed tool and remove the cable from the pedal actuator.
5. Remove the accelerator actuator lower pivot pin push nut (1) and washer (2).
6. Remove the accelerator actuator lower pivot pin (3).
7. Remove the accelerator actuator mounting screws (1).
8. Remove the accelerator actuator (2).

1. Install the accelerator actuator (2) to the accelerator pedal bracket.
2. Install the accelerator actuator screws (1) and tighten to 2.5 N.m (22 lb in).
3. Install the accelerator actuator lower pivot pin (3).
4. Install the accelerator actuator lower pivot pin washer (2) and push nut (1). In order to allow proper actuation of the adjustable bracket, the push nut must allow some free play of the pivot pin. The distance between the bracket side wall and the push nut should be 1.7 mm (0.07 in).
5. Install the drive cable (1) into the accelerator actuator (2) until secured by the secondary locking tabs.
6. Install and twist the cable housing to secure to the accelerator pedal assembly.
7. Install the accelerator pedal bracket mounting nuts and tighten to 9 N.m (80 lb in).
8. Adjust the accelerator pedal mounting bracket using the following procedure: Remove the screws from the cable housing at the top of the adjustable pedal motor. Twist the cable housing to unlock the cable from the motor. Remove the cable from the adjustable pedal motor. Attach a drill motor or equivalent to the adjustable pedal cable. Spin the cable until there is a distance of 6.14 mm (0.24 in) between the arrows on the inboard side of the adjustable pedal bracket.
9. Install the accelerator pedal position sensor assembly. Refer to «Accelerator Pedal Position Sensor Replacement»(/cadillac/escalade/gmt900-2006-2014/remont/testing-diagnostics/#engine-control-system-fuel-system-53l-60l-62l-repair-instructions) .
10. Install the driver knee bolster. Refer to «Knee Bolster Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Knee Bolster Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
11. Verify operation of the adjustable pedals.

1. Turn the ignition switch to the OFF position.
2. Remove the driver knee bolster. Refer to «Knee Bolster Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Knee Bolster Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .
3. Disconnect the adjustable pedal position sensor jumper harness electrical connector (1).
4. Remove the adjustable pedal position sensor bolts (1).
5. Remove the brake and accelerator pedal adjuster position sensor (1).

1. Install the brake and accelerator pedal adjuster position sensor (1).
2. Install the adjustable pedal position sensor bolts (1) and tighten to 2 N.m (18 lb in).
3. Connect the adjustable pedal position sensor jumper harness electrical connector (1).
4. Install the driver knee bolster. Refer to «Knee Bolster Replacement (Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) or «Knee Bolster Replacement (Except Cadillac)»(/cadillac/escalade/gmt900-2006-2014/remont/exteriorinterior-trim/#instrument-panel-trim-and-console-trim) .

Adjustable Pedals Description and Operation (with Memory)

The adjustable pedals system is controlled by the adjustable pedal switch and the memory seat module and operation can occur anytime the transmission is not in reverse. The adjustable pedals assembly is moved forward or backward by a motor which is fixed to the brake pedal actuator with a drive cable to the accelerator pedal actuator. The adjustable pedals motor is controlled directly by an h-bridge driver circuit within the memory seat module. In an inactive state both of the outputs to the motor are closed to ground. The memory seat module controls the adjustable pedals motor by applying battery voltage to one of the outputs. The adjustable pedals motor is bidirectional and the direction of the pedal assembly travel is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. The adjustable pedals forward and rearward switches are inputs to the memory seat module. The memory seat module supplies the switch assembly with a battery positive reference voltage. When the switch is operated to the forward or rearward direction, battery positive voltage is applied to the forward or rearward switch signal inputs. The adjustable pedals system is capable of operating in conjunction with the memory seat system. The memory seat module monitors the location of the adjustable pedals using the adjustable pedals position sensor. The adjustable pedals position sensor is supplied with 5-volt reference and ground circuits from the memory seat module. The position sensor signal circuit is referenced from ground within the driver seat module. The signal voltage monitored by the driver seat module ranges from 0.39-4.58 volts and is determined by the wiper location on the resistor within the position sensor. The position sensor signal circuit voltage level is used by the driver seat module to determine the position of the adjustable pedals when storing or recalling memory position settings. The memory 1 and 2 switches are an inputs to the driver door module and when a memory recall function is activated, the driver door module relays information through the GMLAN Serial Data circuit to the memory seat module in order to operate the adjustable pedals assembly in the appropriate direction until the stored memory position is reached.

Adjustable Pedals Description and Operation (w/o Memory)

The adjustable pedals system is controlled by the adjustable pedals switch and the adjustable pedals relay and operation can occur only while the transmission selector lever is in the park position. The adjustable pedals assembly is moved forward or rearward by a motor which is fixed to the brake pedal actuator with a drive cable to the accelerator pedal actuator. In an inactive state both of the outputs to the motor are closed to ground. The adjustable pedals switch controls the adjustable pedals relay by applying battery voltage to one of the coils. The adjustable pedals motor is bidirectional and the direction of the pedal assembly travel is determined by which of the relay output circuits is switched to battery positive voltage while the other remains grounded. The adjustable pedals system uses the same motor and sensor assembly even when it is not equipped with the memory seats. The adjustable pedals position sensor is not used and does not have any circuits connected. The adjustable pedals position manually controlled by activating the switch in the forward or rearward direction until the desired position is reached.

See also:
• Diagnostic System Check - Vehicle
• Strategy Based Diagnosis
• Diagnostic Procedure Instructions
• Component Connector End Views
• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs
• Control Module References
• Diagnostic Repair Verification
• Accessory Switch Replacement (Except Cadillac)
• Instrument Panel Electrical Center or Junction Block Replacement - Left Side
• Checking Aftermarket Accessories
• Diagnostic Trouble Code (DTC) List - Vehicle
• Steering Column Replacement (Without HP2)
• Accelerator Pedal Position Sensor Replacement
• Floor Air Outlet Duct Replacement - Left Side
• Fastener Caution
• Knee Bolster Replacement (Cadillac)
• DTC B3604 or B3605
• Adjustable Pedals Description and Operation (with Memory)
• Adjustable Pedals Description and Operation (w/o Memory)