Adjustable Pedal System Cadillac SRX I

Fastener Tightening Specifications

Fastener Tightening Specifications

Scheme 1

Scheme 2

Scheme 3

Adjustable Pedals Connector End Views

Adjustable Accelerator Pedal Position Sensor Connector Part Information 15326808 3-Way F GT 150 Series, Sealed (BK) Pin Wire Color Circuit No. Function A TN 782 Memory Seat Sensor Low Reference B D-GN 5953 Adjustable Accelerator Pedal Position Sensor Signal C GY 788 5-Volt Reference

Adjustable Brake Pedal Position Sensor Connector Part Information 15324589 3-Way F Metri-Pack 150 Series, Sealed (GY) Pin Wire Color Circuit No. Function A TN 782 Memory Seat Sensor Low Reference B D-BU 5952 Adjustable Brake Pedal Position Sensor Signal C GY 788 5-Volt Reference

Adjustable Pedal Motor Connector Part Information 12052109 2-Way F Metri-Pack 480 Series (BU) Pin Wire Color Circuit No. Function A PU 5130 Adjustable Pedals Relay Forward Control B YE 5129 Adjustable Pedals Relay Rearward Control

Adjustable Pedals Switch Connector Part Information 12064759 3-Way M Metri-Pack 150 Series (BK) Pin Wire Color Circuit No. Function A OG 5285 Adjustable Pedal Motor Rearward Control B PK 5286 Adjustable Pedal Motor Forward Control C BK 1940 Battery Positive Voltage

Diagnostic Code Index

DIAGNOSTIC CODE INDEX

Diagnostic Starting Point - Adjustable Pedals

Begin the adjustable pedal system diagnosis with the Diagnostic System Check - Vehicle in Vehicle DTC Information. The Diagnostic System Check will provide the following information

1. The identification of the control modules which command the system.
2. The ability of the control modules to communicate through the serial data circuit.
3. The identification of any stored diagnostic trouble codes and their status.

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Scan Tool Output Controls

Scan Tool Output Controls

Scan Tool Data List

Memory Seat Module

Circuit Description

The adjustable pedals forward and rearward switches are inputs to the memory seat module. Battery voltage is supplied to the adjustable pedals switch from the under hood BEC. When the switch is operated to the forward or rearward direction the forward or rearward switch signal circuit is closed to the battery voltage circuit. Battery voltage on a switch signal circuit indicates to the memory seat module that the switch is active.

DTC Descriptors

This diagnostic procedure supports the following DTCs

1. DTC B3604 Adjustable Foot Pedal Forward Switch Circuit
2. DTC B3605 Adjustable Foot Pedal Rearward Switch Circuit

Conditions for Running the DTC

The system voltage must be between 9.0-16.0 volts.

Conditions for Setting the DTC

1. The memory seat module sets a DTC B3604 when the adjustable pedals forward switch signal circuit is active for more than 30 seconds.
2. The memory seat module sets a DTC B3605 when the adjustable pedals rearward switch signal circuit is active for more than 30 seconds.

Action Taken When the DTC Sets

Memory set or recall operations of the adjustable pedal system will be disabled.

Conditions for Clearing the DTC

1. The DTC will be current for as long as the fault is present.
2. When the fault is no longer present the DTC will be a history status code.
3. The history DTC will be cleared after 50 error free ignition cycles, or by using the scan tool clearing DTCs feature.

DTC B3604 or B3605

The memory seat module monitors the locations of the adjustable pedals using position sensors mounted to the brake and accelerator pedal actuators. The position sensors are supplied with a 5-volt reference and ground circuits from the memory seat module. The position sensor signal circuits are referenced from ground within the memory seat module. The signal voltages monitored by the memory seat module range from 0.25-4.75 volts and are determined by the wiper locations on the resistors within the position sensors. The position sensor signal circuit voltage levels are used by the memory seat module to determine the positions of the adjustable pedals when storing or recalling memory position settings. The memory seat module also monitors the locations of both pedal assemblies in order to prevent a step over condition from occurring. During manual or memory operation the position sensor inputs to the memory seat module must remain within 0.6 volts or 31 counts of each other. During a calibration procedure the position sensor inputs must not vary more than 0.3 volts or 23 counts.

DTC Descriptor

This diagnostic procedure supports the following DTC

DTC B3617 Adjustable Foot Pedal Position Sensor Circuit

The system voltage must be between 9.0-16.0 volts.

The memory seat module determines that a step over condition between the brake and accelerator pedals may exist.

1. During manual or memory operation the difference between the brake and accelerator pedal position sensor signals is greater than 31 counts.
2. During an attempted calibration procedure the difference between the brake and accelerator pedal position sensor signals is greater than 23 counts.

The adjustable pedals system will be disabled.

This DTC will remain current until it is cleared, and may only be cleared by using the scan tool clearing DTCs feature.

Diagnostic Aids

1. Inspect for poor connections at the position sensor electrical connectors.
2. Inspect the drive cables for damage and proper connections at the adjuster motor and pedal actuators.
3. Inspect the position sensors and pedal actuators for obvious damage which may cause the condition.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 3: Verify that both pedal assemblies are in proper mechanical working order.
2. 4: Verify that both position sensors are in proper mechanical working order.
3. 6: Attempt to manually synchronize the pedal assemblies to within acceptable limits.

DTC B3617

The memory seat module monitors the locations of the adjustable pedals using position sensors mounted to the brake pedal and accelerator pedal assemblies. The position sensors are supplied with a 5-volt reference and ground circuits from the memory seat module. The position sensor signal circuits are referenced from ground within the memory seat module. The signal voltages monitored by the memory seat module range from 0.25-4.75 volts and are determined by the wiper locations on the resistors within the position sensors. The position sensor signal circuit voltage levels are used by the memory seat module to determine the positions of the adjustable pedals when storing or recalling memory position settings.

This diagnostic procedure supports the following DTCs

1. DTC B3632 Adjustable Brake Pedal Position Sensor Circuit
2. DTC B3633 Adjustable Accelerator Pedal Position Sensor Circuit

The system voltage must be between 9-16 volts.

The position sensor signal circuit voltage level to the driver seat module is not within the 0.25-4.75 volt range.

The adjustable pedals system operation will be disabled.

1. The DTC will be current for as long as the fault is present.
2. When the fault is no longer present the DTC will be a history status code.
3. The history DTC will be cleared after 50 error free ignition cycles, or by using the scan tool clearing DTCs feature.

All of the position sensors monitored by the memory seat module are supplied with common 5-volt reference and ground circuits.

1. If the 5-volt reference circuit is shorted to voltage multiple codes will set.
2. If the 5-volt reference circuit is shorted to ground multiple codes will set.
3. If the sensor ground circuit is open multiple codes will set.

The numbers below refer to the step numbers on the diagnostic table.

1. 3: Tests for the proper operation of the signal circuit in the low voltage range.
2. 4: Tests for the proper operation of the signal circuit in the high voltage range.
3. 5: Tests for a short to voltage in the 5-volt reference circuit.

DTC B3632 or B3633

Symptoms - Adjustable Pedals

1. Perform the «Diagnostic System Check - Vehicle»(/cadillac/srx/i-2003-2009/remont/oem-general-information/#vehicle-dtc-information) in Vehicle DTC Information, 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»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the adjustable pedal system. Refer to «Checking Aftermarket Accessories»(/cadillac/srx/i-2003-2009/remont/body-electrical/#how-to-diagnosis-repair-the-wiring-systems-testing__checking-aftermarket-accessories) in Wiring Systems.
2. Inspect the adjuster cables for proper connections or damage.
3. Inspect the adjuster screws and slides for damage or conditions which may obstruct movement.

Intermittent

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

Symptom List

Refer to Adjustable Pedals Inoperative .

Adjustable Pedals Inoperative

Adjustable Pedals Inoperative

Adjustable Pedal Calibration

The memory seat module monitors the locations of both pedal assemblies in order to prevent a step over condition from occurring. During adjustable pedal system operation the difference between brake and accelerator position sensor inputs to the memory seat module must not exceed 31 counts. 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 both position sensor values through the full range of pedal travel. In order for the calibration to begin and complete the position sensor inputs to the memory seat module must remain within 23 counts of one another.

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. Select the Adjustable Pedal Calibration and verify that the accelerator and brake pedal position sensors are within 23 counts of one another. If the pedal position sensor counts are not within 23 counts of one another, manually adjust the pedals as needed.
5. 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 vacuum brake booster. Refer to «Vacuum Brake Booster Replacement»(/cadillac/srx/i-2003-2009/remont/mechanical-hydraulic/#hydraulic-brake-system) in Hydraulic Brakes.
2. Remove the steering column support bracket to brake booster mounting plate mounting nut (1).
3. Without disconnecting the park brake cable, remove and reposition the park brake pedal assembly. Refer to «Park Brake Pedal Assembly Replacement»(/cadillac/srx/i-2003-2009/remont/parking-brake-system/#parking-brake) in Park Brake.
4. Without disconnecting the steering column from the intermediate shaft, lower the steering column assembly and support the column. Refer to «Steering Column Replacement»(/cadillac/srx/i-2003-2009/remont/ignition-switchsteering-lock/#steering-wheel-and-steering-column) in Steering Wheel and Column.
5. Disconnect the electrical connector from the brake apply sensor (BAS) (6).
6. Disconnect the electrical connector (4) from the adjustable brake pedal motor.
7. Disconnect the electrical connector (1) from the adjustable brake pedal position sensor.
8. Disconnect the adjustable accelerator pedal wiring harness (2) from the adjustable brake pedal bracket.
9. Remove the 3 brake pedal assembly to cowl mounting nuts (1).
10. Remove the 2 steering column support bracket to I/P carrier mounting nuts (2).
11. Remove the 3 brake pedal assembly to I/P carrier mounting nuts (1).
12. Remove the brake booster mounting plate (1) from the cowl. This will remove the studs to allow for brake pedal removal.
13. Remove the steering column support bracket (1).
14. Carefully squeeze the collar of the adjustable accelerator pedal cable and disconnect the accelerator pedal cable from the adjustable brake pedal motor.
15. Remove the brake pedal assembly from the vehicle.

Installation Procedure

1. Synchronize the accelerator pedal to the full forward position. Using an adjustable wrench on the adjustable cable end, slowly rotate the cable to move the pedal to the full forward, front of vehicle position.
2. Remove the adjustable wrench from the cable.
3. Synchronize the brake pedal to the full forward position. Install a square drive tool into the adjustable brake pedal motor and carefully rotate the motor to move the pedal to the full forward, front of vehicle position.
4. Remove the square drive tool.
5. Install the adjustable brake pedal assembly to the vehicle.
6. Carefully reconnect the adjustable accelerator pedal cable (5) to the adjustable brake pedal motor. Ensure that adjustable brake pedal cable retainer is locked into place by carefully pulling on the cable.
7. Install the steering column support bracket (1).
8. Install the vacuum brake booster mounting plate (1) to the cowl and brake pedal assembly.
9. Install the 3 brake pedal assembly to cowl mounting nuts (1). Tighten: Tighten the nuts to 25 N.m (18 lb ft).
10. Install the 3 brake pedal assembly to I/P carrier mounting nuts (1). Tighten: Tighten the nuts to 25 N.m (18 lb ft).
11. Install the steering column support bracket to brake booster mounting plate mounting nut (1). Tighten: Tighten the nut to 25 N.m (18 lb ft).
12. Install the 2 steering column support bracket to I/P carrier mounting nuts (2). Tighten: Tighten the nuts to 25 N.m (18 lb ft).
13. Reconnect the electrical connector to the adjustable brake pedal position sensor (1).
14. Reconnect the adjustable accelerator pedal electrical harness (2) to the adjustable brake pedal bracket.
15. Reconnect the electrical connector (4) to the adjustable brake pedal motor.
16. Connect the electrical connector to the BAS (6).
17. Reposition and secure the steering column assembly. Refer to «Steering Column Replacement»(/cadillac/srx/i-2003-2009/remont/ignition-switchsteering-lock/#steering-wheel-and-steering-column) in Steering Wheel and Column.
18. Reposition and secure the park brake pedal assembly. Refer to «Park Brake Pedal Assembly Replacement»(/cadillac/srx/i-2003-2009/remont/parking-brake-system/#parking-brake) in Park Brake.
19. Install the vacuum brake booster. Refer to «Vacuum Brake Booster Replacement»(/cadillac/srx/i-2003-2009/remont/mechanical-hydraulic/#hydraulic-brake-system) in Hydraulic Brakes.
20. Perform the adjustable pedal calibration. Refer to «Adjustable Pedal Calibration»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system__adjustable-pedal-calibration) .

1. Remove the knee bolster bracket. Refer to «Knee Bolster Bracket Replacement - Left»(/cadillac/srx/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages, and Console.
2. Remove the accelerator pedal assembly mounting nuts (4).
3. Remove the pedal assembly from the studs.
4. Disconnect the electrical connector from the electronic throttle control sensor (3).
5. Disconnect the electrical connector from the linear position sensor.
6. Carefully lift the retaining tabs on the end of the accelerator pedal cable (1) using 2 thin-bladed tools.
7. Disconnect the adjustable accelerator pedal cable (1) from the pedal assembly.
8. Remove the accelerator pedal assembly from the vehicle.

1. Synchronize the pedals to the full forward position.
2. Synchronize the brake pedal to the full forward position. Use the instrument panel switch, the Tech II, or manually move the brake pedal as follows: Use an adjustable wrench on the accelerator pedal end of the accelerator pedal cable (1). Slowly rotate the accelerator cable to move the brake pedal to the full forward, front of vehicle position. Remove the wrench from the vehicle.
3. The new accelerator pedal assembly should already be synchronized to the full forward position. If the pedal is not synchronized, proceed as follows before installation: Install a square drive tool into the accelerator pedal where the cable attaches. Carefully rotate the tool to move the adjustable pedal to the full forward position. Remove the square drive tool.
4. Connect the adjustable accelerator pedal cable (1) to the pedal assembly.
5. Ensure that the adjustable accelerator pedal cable retaining feature is locked in place by carefully pulling on the cable.
6. Connect the electrical connector to the linear position sensor.
7. Connect the electrical connector to the electronic throttle control sensor (3).
8. Install the accelerator pedal assembly to the mounting studs.
9. Install the accelerator pedal assembly mounting nuts (4). Tighten: Tighten the accelerator pedal assembly mounting nuts to 9 N.m (80 lb in).
10. Install the knee bolster bracket. Refer to «Knee Bolster Bracket Replacement - Left»(/cadillac/srx/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages, and Console.
11. Perform the adjustable pedal calibration procedure. Refer to «Adjustable Pedal Calibration»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system__adjustable-pedal-calibration) .

1. Remove the adjustable brake pedal from the vehicle. Refer to «Brake Pedal Assembly Replacement (With Adjustable Pedals)»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .
2. In order to release the adjustable brake pedal cable from the adjustable brake pedal motor, carefully squeeze the collar of the cable and pull outward from the motor.
3. To remove the head of the factory motor inserts use a 3/16 in drill bit. Carefully drill the head of the factory motor insert (2) from the bottom side of the adjustable brake pedal motor bracket (4).
4. Remove the adjustable brake pedal motor.

Scheme 4

1. Position the adjustable brake pedal motor to the adjustable brake pedal motor bracket. IMPORTANT: Remove the new motor inserts, reuse original inserts. Install the motor insert (2) into the motor grommet (3) of the new motor. NOTE: Refer to «Fastener Notice»(/cadillac/srx/i-2003-2009/remont/oem-general-information/#cautions-and-notices__fastener-notice) in Cautions and Notices. Install the motor to motor bracket bolts (1) to secure the motor to the motor plate (4). Tighten: Tighten the bolts to 4 N.m (36 lb in).
2. Synchronize the accelerator pedal to the full forward, front of vehicle position. Using an adjustable wrench on the cable end and rotate the cable to move the pedal to the full forward front of vehicle position.
3. Remove the adjustable wrench from the cable.
4. Connect the adjustable brake pedal cable to the motor.
5. Insert a square drive tool into the adjustable brake pedal motor.
6. Synchronize the adjustable brake pedal to the full forward, front of vehicle position. Carefully rotate the adjustable brake pedal motor until the brake pedal is in the full forward front of vehicle position.
7. Remove the square drive tool.
8. Install the adjustable brake pedal to the vehicle. Refer to «Brake Pedal Assembly Replacement (With Adjustable Pedals)»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .

1. Remove the adjustable accelerator pedal assembly from the vehicle. Refer to «Accelerator Pedal Assembly Replacement»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .
2. Carefully squeeze the collar of the accelerator pedal cable in order to release the cable from the motor.
3. Remove the accelerator cable from the vehicle.

1. Install the accelerator pedal cable (5) to the motor.
2. Synchronize the pedals to the full forward position.
3. Synchronize the brake pedal to the full forward position. Use the instrument panel switch, the Tech II, or manually move the brake pedal as follows: Use an adjustable wrench on the accelerator pedal end of the accelerator pedal cable. Slowly rotate the accelerator cable to move the brake pedal to the full forward, front of vehicle position. Remove the wrench from the vehicle.
4. Synchronize the accelerator pedal to the full forward position. Proceed as follows before pedal installation: Install a square drive tool into the accelerator pedal where the cable attaches. Carefully rotate the tool to move the adjustable pedal to the full forward position. Remove the square drive tool.
5. Connect the adjustable accelerator pedal cable to the pedal assembly.
6. Ensure that the adjustable accelerator pedal cable retaining feature is locked in place by carefully pulling on the cable.
7. Continue the installation procedure for the accelerator pedal assembly. Refer to «Accelerator Pedal Assembly Replacement»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .
8. Install the knee bolster bracket. Refer to «Knee Bolster Bracket Replacement - Left»(/cadillac/srx/i-2003-2009/remont/gauges-instrument-panels/#instrument-panel-gages-and-console) in Instrument Panel, Gages and Console.
9. Perform the adjustable pedal calibration procedure. Refer to «Adjustable Pedal Calibration»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system__adjustable-pedal-calibration) .

1. Remove the adjustable brake pedal from the vehicle. Refer to «Brake Pedal Assembly Replacement (With Adjustable Pedals)»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .
2. Remove the adjustable brake pedal cable from the motor. In order to release the adjustable brake pedal cable from the adjustable brake pedal motor carefully squeeze the collar of the cable and pull outward from the motor.
3. In order to remove the adjustable brake pedal cable from the brake pedal assembly carefully lift the retaining tabs (1) on the cable end using 2 thin bladed tools.
4. Carefully pull upward remove the adjustable brake pedal cable assembly from the brake pedal assembly.

1. Synchronize the accelerator pedal to the full forward, front of vehicle position. Using an adjustable wrench on the adjustable cable end and rotate the cable to move the pedal to the full forward, front of vehicle position.
2. Remove the adjustable wrench from the cable.
3. Connect the adjustable brake pedal cable to the motor.
4. Install the adjustable brake pedal cable assembly (2) to the adjustable brake pedal assembly (3) until the locking tabs (1) are locked into position. Ensure that adjustable brake pedal cable retainer is locked into place by carefully pulling upwards on the cable.
5. Carefully insert a square drive tool into the adjustable brake pedal motor.
6. Carefully rotate the adjustable brake pedal adjustment drive screw until the brake pedal is in the full forward, front of vehicle position.
7. Remove the square drive tool.
8. Install the adjustable brake pedal to the vehicle. Refer to «Brake Pedal Assembly Replacement (With Adjustable Pedals)»(/cadillac/srx/i-2003-2009/remont/accessories-control-systems/#adjustable-pedal-system) .

Adjustable Pedals System Components

The adjustable pedals system consists of the following components

1. The adjustable pedals position switch
2. The memory seat module
3. The adjustable pedals motor
4. The accelerator pedal position sensor
5. The brake pedal position sensor

Adjustable Pedals System Operation

The adjustable pedal system is controlled by the memory seat module and operation can occur only while the transmission selector lever is in the park position. The adjustable pedals are moved forward or backward by a motor which is fastened to the brake pedal assembly with drive cables to the brake and accelerator pedal actuators.

The adjuster motor is controlled by the memory seat module through two motor control circuits. In an inactive state both control circuits are closed to ground within the memory seat module. The memory seat module drives the adjuster motor in the forward or rearward direction by closing the appropriate control circuit to battery voltage. The adjuster motor is bidirectional and the direction of the pedal assembly travel is determined by which of the motor control circuits is switched to battery voltage while the other remains grounded.

The adjustable pedals forward and rearward switches are inputs to the memory seat module. Battery voltage is supplied to the switch from the under hood BEC. When the switch is operated to the forward or rearward direction the forward or rearward switch signal circuit is closed to the battery voltage circuit. Battery voltage on a switch signal circuit indicates to the memory seat module that the switch is active.

The memory seat module monitors the locations of the adjustable pedals using position sensors mounted to the brake and accelerator pedal actuators. The position sensors are supplied with a 5-volt reference and ground circuits from the memory seat module. The position sensor signal circuits are referenced from ground within the memory seat module. The signal voltages range from 0.25-4.75 volts and are determined by the wiper locations on the resistors within the position sensors. The position sensor signal circuit voltage levels are used by the memory seat module to determine the positions of the adjustable pedals when storing or recalling memory position settings. The memory seat module also monitors the locations of both pedal assemblies in order to prevent a step over condition from occurring. During manual or memory operation the position sensor inputs to the memory seat module must remain within 0.6 volts or 31 counts of each other. If at any time the difference between position sensor inputs exceeds the allowable limit, the memory seat module disable adjustable operation until the fault has been corrected. Anytime adjustable pedal system components are replaced, including the memory seat module, the system will not operate until the calibration procedure has be performed. Refer to Adjustable Pedal Calibration . During a calibration procedure the position sensor inputs must not vary more than 0.3 volts or 23 counts.

See also:
• Diagnostic System Check - Vehicle
• Testing for Intermittent Conditions and Poor Connections
• Circuit Testing
• Wiring Repairs
• Connector Repairs
• Control Module References
• Checking Aftermarket Accessories
• Vacuum Brake Booster Replacement
• Park Brake Pedal Assembly Replacement
• Steering Column Replacement
• Fastener Notice
• Knee Bolster Bracket Replacement - Left
• DTC B3604 or B3605
• Adjustable Pedal Calibration
• Adjustable Pedals Connector End Views
• Scan Tool Output Controls
• Adjustable Pedals Inoperative