Opel Insignia: Diagnostic Information and Procedures

DTC C0176

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C0176

Control Module Temperature Sensor

Symptom Byte Information: Symptom Byte List

Circuit/System Description

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering)

Conditions for Running the DTC

• Ignition = On
• Engine = Running
• System Voltage = 9 to 16 V

Conditions for Setting the DTC

Power Steering Control Module Temperature = 115 to 125ºC (240 to 257ºF)

Actions Taken When the DTC Sets

Power Steering Output Torque = Reduced

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Diagnostic Aids

This DTC does not indicate any system malfunction. To avoid thermal damage, the power steering control module limits the current to the power steering motor. Aggressive steering may cause reduced steering assist. Discuss with the customer about the driving conditions when the concern occurred.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

NOTE: A DTC may set depending on certain driving conditions and would not require a component replacement. Aggressive steering may cause reduced steering assist. Discuss with the customer about the driving conditions when the concern occurred.

1. Operate the vehicle within the Conditions for Running the DTC. Verify the DTC does not set.

• If the DTC sets

1. Ignition/Vehicle - Off
2. Verify the following conditions do not exist:Steering = Binding or Sticking
   • If a condition exists - Refer to:Steering Effort Hard or Too Easy in One or Both Directions
   • If no condition exists - Replace the component: Steering Gear

• Go to next step: If the DTC is not set

2. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

• Electric Dual Pinion Rack and Pinion Steering Gear Replacement
• For control module replacement, programming, and setup refer to: Control Module References

DTC C0460

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C0460

Steering Wheel Angle Sensor

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

For an overview of the component/system, refer to:ABS Description and Operation.

Conditions for Running the DTC

• K17 Electronic Brake Control Module = During control module power up
• Ignition Voltage = Greater than 8 V
• Vehicle Speed = Greater than 20 km/h (12 MPH)

Conditions for Setting the DTC

C0460 42

Steering Wheel Angle Sensor = Calibration Not Programmed

C0460 4B

Steering Wheel Angle Sensor = Calibration Not Learned - Zero position not set.

C0460 58

Steering Wheel Angle Sensor = Performance

C0460 5A

Steering Wheel Angle Sensor Signal = Not Plausible

Actions Taken When the DTC Sets

Power Steering Output Torque = Disabled

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Circuit/System Verification

C0460 42

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C0460 42 is not set.

• If the DTC is set

1. Perform the following action: Rotate the steering wheel - To the full stop position - Left & Right
2. Clear the DTCs.
3. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
4. All OK.

• Go to next step: If the DTC is not set

3. All OK.

C0460 4B

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C0460 4B is not set.

• If the DTC is set

1. Perform the following procedure/test:Power Steering Control Module Calibration
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
3. All OK.

• Go to next step: If the DTC is not set

3. All OK.

C0460 58

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C0460 58 is not set.

NOTE: Inspect the electrical connectors and the ground circuits of the component for poor connections.

3.

• If the DTC is set

Replace the component: Steering Gear

• Go to next step: If the DTC is not set

4. All OK.

C0460 5A

1. Ignition - On / Vehicle - In Service Mode.

2. Verify there are no other DTCs set, except for DTC C0460 5A.

• If any other DTCs are set

Refer to:Diagnostic Trouble Code (DTC) List - Vehicle

• Go to next step: If no other DTCs are set

3. Verify the following conditions do not exist: Front wheel alignment - Incorrect adjustment.

4. Verify the scan tool parameter: Steering Wheel Angle = 0 degrees.

• If not 0º

1. Perform the following procedure/test:Power Steering Control Module Calibration
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC does not set
3. All OK.

• Go to next step: If 0º

5. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.

Electric Dual Pinion Rack and Pinion Steering Gear Replacement

For control module replacement, programming, and setup refer to: Control Module References.

DTC C0475

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C0475

Power Steering Motor Circuit

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering).

Conditions for Running the DTC

Ignition = On

Conditions for Setting the DTC

Power Steering Motor Circuit = Malfunction

Actions Taken When the DTC Sets

• Power Steering Output Torque = Disabled
• P9 Driver Information Center Display = Service Power Steering

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C0475 is not set.

• If the DTC is set

1. Clear DTCs - DTC C0475
2. Cycle the ignition from OFF to ON.
3. Verify the DTC does not set.
   • If the DTC sets - Replace the component: Steering Gear
   • Go to next step: If the DTC does not set

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

Electric Dual Pinion Rack and Pinion Steering Gear Replacement

For control module replacement, programming, and setup refer to: Control Module References.

DTC C047A

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C047A

Power Steering Motor Position Sensor Circuit

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering).

Conditions for Running the DTC

Ignition = On

Conditions for Setting the DTC

• The control module detects a short to ground. - Power Steering Motor Position Sensor Circuit
• The control module detects a short to voltage. - Power Steering Motor Position Sensor Circuit
• The control module detects an open circuit. - Power Steering Motor Position Sensor Circuit

Actions Taken When the DTC Sets

• Power Steering Output Torque = Disabled
• P9 Driver Information Center Display = Service Power Steering

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C047A is not set.

• If the DTC is set

Replace the component: K43 Power Steering Control Module

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.

For control module replacement, programming, and setup refer to: Control Module References.

DTC C0545

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C0545

Steering Wheel Torque Sensor

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering).

Conditions for Running the DTC

Ignition = On

Conditions for Setting the DTC

• Steering Wheel Torque Sensor = Short to Ground
• Steering Wheel Torque Sensor = Short to Voltage
• Steering Wheel Torque Sensor = Open/High Resistance

Actions Taken When the DTC Sets

• Power Steering Output Torque = Disabled
• P9 Driver Information Center Display = Service Power Steering

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C0545 is not set.

• If the DTC is set

Replace the component: Steering Gear

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

• Electric Dual Pinion Rack and Pinion Steering Gear Replacement
• For control module replacement, programming, and setup refer to: Control Module References

DTC C0569

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C0569

System Configuration

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

The power steering control module continuously monitors the thermal cycle counter of the steering gear. If the module is replaced, the thermal cycle counter value needs to be transferred from the existing module over to the new module using the SPS Electric Power Steering Setup Procedure.

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering).

Conditions for Running the DTC

Ignition = On

Conditions for Setting the DTC

The thermal cycle counter value does not meet the system requirement.

Actions Taken When the DTC Sets

• Power Steering Output Torque=Disabled
• P9 Driver Information Center Display=Service Power Steering

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C0569 is not set.

• If the DTC is set

1. Perform all necessary programming and setup procedures for the control module: K43 Power Steering Control Module
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
3. All OK.

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.

For control module replacement, programming, and setup refer to: Control Module References.

DTC C056D

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C056D

Electronic Control Unit Hardware

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

The internal fault detection is handled inside the control module. No external circuit diagnosis is involved.

Conditions for Running the DTC

Ignition On

Conditions for Setting the DTC

K43 Power Steering Control Module = Malfunction

Actions Taken When the DTC Sets

K43 Power Steering Control Module = Disabled

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Diagnostic Aids

• This DTC can be set as a history DTC without affecting the operation of the component: K43 Power Steering Control Module
• If set only as a history DTC, do not replace any component.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C056D is not set.

• If the DTC is set

1. Perform all necessary programming and setup procedures for the control module: K43 Power Steering Control Module
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
3. All OK.

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

For control module replacement, programming, and setup refer to: Control Module References

DTC C056D (Power Steering Control Module)

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C056D

Electronic Control Unit Hardware

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

The internal fault detection is handled inside the control module. No external circuit diagnosis is involved.

Conditions for Running the DTC

Ignition On

Conditions for Setting the DTC

K43 Power Steering Control Module = Malfunction

Actions Taken When the DTC Sets

K43 Power Steering Control Module = Disabled

Conditions for Clearing the DTC

• A current DTC will clear on the next malfunction-free ignition cycle.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Diagnostic Aids

• This DTC can be set as a history DTC without affecting the operation of the component: K43 Power Steering Control Module
• If set only as a history DTC, do not replace any component.

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C056D is not set.

• If the DTC is set

1. Perform all necessary programming and setup procedures for the control module: K43 Power Steering Control Module
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
3. All OK.

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification.

For control module replacement, programming, and setup refer to: Control Module References.

DTC C056E (Power Steering Control Module)

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C056E

Electronic Control Unit Software

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

For an overview of the component/system, refer to:Power Steering System Description and Operation (Electronic Power Steering).

Conditions for Running the DTC

Ignition = On

Conditions for Setting the DTC

• K43 Power Steering Control Module = Missing Calibration
• Power Steering Control Module SPS Calibration Status = Incomplete
• VIN Not Programmed
• Software Malfunction

Actions Taken When the DTC Sets

Power Steering Output Torque = Default

Conditions for Clearing the DTC

• K43 Power Steering Control Module = Programmed
• K43 Power Steering Control Module = Calibrated

Reference Information

Schematic Reference

Power Steering Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

Circuit/System Verification

Symptom Byte:43, 45, 46, 47, 4A, or 5A

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C056E is not set.

• If the DTC is set

1. Perform all necessary programming and setup procedures for the control module: K43 Power Steering Control Module
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
3. All OK.

• Go to next step: If the DTC is not set

3. All OK.

Symptom Byte:42

1. Ignition - On / Vehicle - In Service Mode.

2. Verify DTC C056E is not set.

• If the DTC is set

1. Calibrate the power steering control module.Refer to:Power Steering Control Module Calibration
2. Verify the DTC does not set.
   • If the DTC sets - Replace the component: K43 Power Steering Control Module
   • Go to next step: If the DTC is not set
3. All OK.

• Go to next step: If the DTC is not set

3. All OK.

Symptom Byte:37

1. Ignition - On / Vehicle - In Service Mode

2. Verify DTC C056E is not set.

• If the DTC is set

Replace the component: Steering Gear

• Go to next step: If the DTC is not set

3. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

Electric Dual Pinion Rack and Pinion Steering Gear Replacement

For control module replacement, programming, and setup refer to: Control Module References.

DTC C1436

Diagnostic Instructions

• Perform the Diagnostic System Check prior to using this diagnostic procedure:Diagnostic System Check - Vehicle
• Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis
• An overview of each diagnostic category can be found here:Diagnostic Procedure Instructions

DTC Descriptor

DTC C1436

Steering Wheel Angle Sensor Signal

Symptom Byte Information: Symptom Byte List.

Circuit/System Description

For an overview of the component/system, refer to:ABS Description and Operation.

Conditions for Running the DTC

Electronic Brake Control Module in Initialization Mode

• Ignition Voltage=Greater than 8 V
• The vehicle speed is greater than 20 km/h (12 MPH).

Conditions for Setting the DTC

Symptom Byte:09

Steering Wheel Angle Sensor Signal = Not Plausible

Symptom Byte:0A

Steering Wheel Angle Sensor Signal = Constant

Symptom Byte:11

Steering Wheel Angle Sensor Signal = Out Of Range

Actions Taken When the DTC Sets

One or more of the following may occur:

• Traction/Stability Control Indicator = On
• P9 Driver Information Center Display = Service Stability Control
• P9 Driver Information Center Display = Service Brake Assist
• P9 Driver Information Center Display = Service Power Steering
• Traction Control & Vehicle Stability Control = Disabled

Conditions for Clearing the DTC

• A current DTC will clear when the diagnostic runs and passes.
• A history DTC will clear after 40 consecutive malfunction-free ignition cycles.

Diagnostic Aids

• Check the tire inflation pressure and adjust to the tire inflation specifications as necessary.
• The vehicle should not pull in either direction causing the steering wheel to be off center while driving in a straight line on a level.
• Confirm that all tires are of the proper size and the same model and brand. If a mis-sized or nonmatching tire model is present, inform the customer that in order for the vehicle stability system to function normally, tires need to have a uniform size and rolling diameter.
• Inspect the serial data circuits and connections at the power steering control module and the electronic brake control module. They should be free from sources of electromagnetic interference and the connections should be clean and tight.

Reference Information

Schematic Reference

Antilock Brake System Wiring Schematics

Connector End View Reference

COMPONENT CONNECTOR END VIEW INDEX

Electrical Information Reference

• Circuit Testing
• Connector Repairs
• Testing for Intermittent Conditions and Poor Connections
• Wiring Repairs

Scan Tool Reference

Control Module References

Circuit/System Verification

1. Ignition = On.

2. Verify there are no DTCs set related to the following system/component: K43 Power Steering Control Module.

• If a related DTC is set

Refer to:Diagnostic Trouble Code (DTC) List - Vehicle

• Go to next step: If a related DTC is not set

1. Verify DTC U0126, U0130, U0131 is not set.
   • If DTC U0126, U0130, U0131 is set

     Refer to:Diagnostic Trouble Code (DTC) List - Vehicle

   • Go to next step: If a DTC was not set
2. Verify DTC C0035-C0050 is not set. - Electronic Brake Control Module
   • If DTC C0035-C0050 is set

     Refer to:Diagnostic Trouble Code (DTC) List - Vehicle

   • Go to next step: If a DTC was not set

3. Perform the following procedure/test:Steering Wheel Angle Sensor Centering

• If the repair corrected the DTC/symptom

All OK.

• Go to next step: If the repair did not correct the DTC/symptom

4. Replace the component: Steering Gear

• If the repair corrected the DTC/symptom

All OK.

• Go to next step: If the repair did not correct the DTC/symptom

5. Replace the component: K17 Electronic Brake Control Module.

6. All OK.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

• Electric Dual Pinion Rack and Pinion Steering Gear Replacement
• For control module replacement, programming, and setup refer to: Control Module References

Symptoms - Power Steering System

NOTE: Review the system description and operation in order to familiarize yourself with the system functions. Refer to Power Steering System Description and Operation (Electronic Power Steering).

Visual/Physical Inspection

• Inspect for aftermarket devices which could affect the operation of the power steering system.
• Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Symptoms List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

• Increase in Effort While Turning Steering Wheel
• Poor Return of Steering Wheel
• Steering Wheel Surges/Jerks While Turning
• Rattle, Clunk, Pop or Shudder Noise from the Power Steering System
• Whine or Growl Noise from the Power Steering System

RATTLE, CLUNK, POP OR SHUDDER NOISE FROM THE POWER STEERING SYSTEM

WHINE OR GROWL NOISE FROM THE POWER STEERING SYSTEM

Special Tools

CH-39570 Chassis Ear

Equivalent regional tools:Special Tools

INCREASE IN EFFORT WHILE TURNING STEERING WHEEL

POOR RETURN OF STEERING WHEEL

DEFINITION: After completing a turn, extra steering input is required for the steering wheel to return to center.

STEERING WHEEL SURGES/JERKS WHILE TURNING

STEERING EFFORT HARD OR TOO EASY IN ONE OR BOTH DIRECTIONS

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