Electronic Power Assist Steering System

• Specifications
  • Material Specifications
  • Torque Specifications
• Description And Operation
  • Electronic Power Assist Steering (EPAS) System
    • Overview
    • System Operation
      • System Diagram
      • Network Message Chart
      • Electronic Power Assist Steering (EPAS) System
      • Failure Modes
      • Reduced Steering Assist Mode
      • Manual Steering Mode
      • Active Park Assist
      • Component Description
        • Steering Gear
        • Power Steering Control Module (PSCM)
• Diagnosis And Testing
  • Steering System
    • Notes
    • Principles of Operation
      • Electronic Power Assist Steering (EPAS) System
      • Active Park Assist
• Interactive Diagnostics
  • Inspection and Verification
  • Known Concerns
• DTC Symptoms
  • DTC Index
    • Notes
    • DTC B1D23: Overheat Sensor
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC C1B00: Steering Angle Sensor
      • Description
      • Possible Causes
      • Diagnostic Aids
    • DTC C200B: Steering Shaft Torque Sensor 1
      • Description
      • Possible Causes
      • Diagnostic Aids
    • DTC C200C: Steering Shaft Torque Sensor 2
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC C200D: Motor Rotation Angle Sensor
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC P07AE: Transmission Friction Element G Performance/Stuck Off
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0001: High Speed CAN Communications Bus
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0100: Lost Communication with ECM/PCM A
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0121: Lost Communication with the Anti-lock Brake System (ABS) Control Module
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0126: Lost Communication With Steering Angle Sensor Module
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0140: Lost Communication With Body Control Module
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0151: Lost Communication With Restraints Control Module
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0159: Lost Communication With Parking Assist Control Module A
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U023A: Lost Communication with Image Processing Module A
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0300: Internal Control Module Software Incompatibility
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0401: Invalid Data Received from ECM/PCM A
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0415: Invalid Data Received from ABS Control Module
      • Description
      • Possible Causes
      • Diagnostic Aids
    • DTC U0428: Invalid Data Received from the Steering Angle Sensor Module
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U0452: Invalid Data Received From RCM
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U045A: Invalid Data Received From Parking Assist Control Module A
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U053B: Invalid Data Received from Image Processing Module A
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U2011: Motor
      • Description
      • Possible Causes
      • Diagnostic Aids
    • DTC U2100: Initial Configuration Not Complete
      • Description
      • Possible Causes
      • Diagnostic Aids
      • Action
    • DTC U3000: Control Module
      • Description
      • Possible Causes
      • Diagnostic Aids
    • DTC U3002: Vehicle Identification Number
      • Description
    • DTC U3003: Battery Voltage
      • Description
      • Possible Causes
      • Diagnostic Aids
  • Symptom Chart - Steering System and NVH
• Pinpoint Tests
  • Pinpoint Tests A: DTCs B1304 and U3003: Electronic Power Assisted Steering System and Battery Voltage - Circuit Voltage Below Threshold, Circuit Voltage Above Threshold and Event Information
    • Normal Operation
  • Pinpoint Tests B: DTCs C1B00, C200B, C200C, U2011, U2200 and U3000: Steering Angle Sensor, Steering Shaft Torque Sensor 1, Steering Shaft Torque Sensor 2, Motor and Control Module - Failure or Erratic
    • Normal Operation
  • Pinpoint Tests C: DTC U3000: Control Module - Signal Calculation Failure and Component Internal Failure
    • Normal Operation
  • Pinpoint Tests D: DTC U3000: Control Module - Actuator Stuck Open
    • Normal Operation
  • Pinpoint Tests E: DTC C1B00: Steering Angle Sensor - Signal Erratic
    • Normal Operation
  • Pinpoint Tests F: DTC P07AE: Transmission Friction Element G Performance/Stuck Off - Component Failure
    • Normal Operation
  • Pinpoint Tests G: Excessive Steering Wheel Play
  • Pinpoint Tests H: Steering System Pull/Drift/Wander or Steering Wheel is Off Center
  • Pinpoint Tests I: Poor Returnability/Sticky Steering and Lack of Assist or Inconsistent Assist
    • Normal Operation
  • Pinpoint Tests J: Shimmy or Feedback (Rattle, Chuckle or Knocking Noise) - Roughness is Felt in the Steering Wheel When the Vehicle is Driven Over Rough Surfaces
    • Normal Operation
  • Pinpoint Tests K: Damaged Steering Gear Bellows Boots
    • Normal Operation
  • Pinpoint Tests M: DTCs C1B00, C200B, C200C, C200D, U0300, U2011, U3000 and U3004: Steering Column Mounted EPAS - Steering Angle Sensor, Steering Shaft Torque Sensor 1, Steering Shaft Torque Sensor 2, Motor and Control Module - Failure or Erratic
    • Notes
    • Normal Operation
  • Pinpoint Tests N: DTC U3003: Steering Column Mounted EPAS - Battery Voltage - Circuit Voltage Below Threshold and Circuit Voltage Above Threshold
    • Notes
    • Normal Operation
  • Pinpoint Tests O: DTC C100C: Steering Column Mounted EPAS - Steering Tracking
    • Notes
    • Normal Operation
  • Pinpoint Tests P: DTC C1B00: Steering Column Mounted EPAS - Steering Angle Sensor Calibration Check
    • Notes
    • Normal Operation
  • Pinpoint Tests Q: Steering Column Mounted EPAS - Shimmy or Feedback (Rattle, Chuckle or Knocking Noise) - Roughness is Felt in the Steering Wheel When the Vehicle is Driven Over Rough Surfaces
    • Notes
    • Normal Operation
  • Pinpoint Tests R: Steering Column Mounted EPAS - Excessive Steering Wheel Play
  • Pinpoint Tests S: Steering Column Mounted EPAS - Steering System Pull/Drift/Wander or Steering Wheel is Off Center
  • Pinpoint Tests T: DTC C1023: Steering Tracking
    • Normal Operation
  • Pinpoint Tests U: Invalid Data Received From The Steering Angle Sensor Module (SASM)
    • Normal Operation
  • Pinpoint Tests V: DTC C102D: High Friction Inside Power Steering
    • Normal Operation
  • Pinpoint Tests W: DTCs C1B00, C200B and U3000: Steering Angle Sensor, Steering Shaft Torque Sensor 1 and Control Module - Signal or Internal Failure
    • Normal Operation
• Removal And Installation
  • Steering Gear
    • Notes
    • Exploded View - View 1 of 2
    • Exploded View - View 2 of 2
    • Removal
    • Installation
  • Steering Gear Boot
    • Notes
    • Material
    • Removal
    • Installation
  • Tie Rod - Inner
    • Notes
    • Exploded View
    • Removal
    • Installation