:  Oct 5, 2007



Overview

The steering is a variable power assist system, the degree of assistance being controlled by the dynamic suspension control module.

For information on the description and operation of the system, refer to section 211-00 - Steering System of the workshop manual.

Inspection and Verification

. Verify the customer concern.
  If a road test is necessary make sure the vehicle is safe to do so.
If a road test is necessary make sure the vehicle is safe to do so.

. Visually inspect for obvious mechanical or electrical faults.

Mechanical Electrical
  • Check the tires for correct pressure, size and tread pattern
  • Check for wheel rim and tire damage
  • Check road wheel security
  • Check the power steering fluid level and the hydraulic circuit for oil leaks
  • Check the power steering pump drive belt condition and tension
  • Check the power steering pump for security, wear, damage and excessive noise
  • Check the steering gear assembly for damage, wear and security
  • Check the hydraulic pipes and cooler lines for damage and correct routing
  • Check the steering joints for damage, excessive play, wear and security
  • Check the steering column and joints for damage, excessive play, wear and security
  • Steering angle sensor (SAS) and circuits
  • Controller area networks (CAN) circuits

. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

. :
  Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

Use the approved diagnostic system or a scan tool to retrieve any diagnostic trouble codes (DTCs) before moving onto the symptom chart or DTC index.
  Because the DTCs are stored in more than one module, a complete vehicle read is recommended
Because the DTCs are stored in more than one module, a complete vehicle read is recommended
  Make sure that all DTCs are cleared following rectification
Make sure that all DTCs are cleared following rectification

Symptom Chart

Symptom Possible Causes Action
Steering wanders
  • Excessive free play in the steering system
  • Steering geometry incorrectly aligned
Check for excessive movement or play in the steering system with the engine running. Check for play at several different steering positions. Carry out steering geometry and alignment checks. Refer to the relevant section of the workshop manual
Steering pulls to the left or right
  • Steering geometry incorrectly aligned
Carry out steering geometry and alignment checks using a four wheel alignment system. Refer to section 204-00 - Suspension System - General Information of the workshop manual. Ensure that the tire direction of rotation is correct for the position on the vehicle (where directional tires are installed)
Steering feels notchy when turning from lock to lock
  • Steering or suspension swivel joints seized
  • Steering tie rod end joints or track rod inner joints seized
  • Steering column or universal joints seized
  • Steering gear internal components misaligned, worn or damaged
Disconnect the steering gear from the suspension. Check for freedom of movement in the suspension. Disconnect the steering column from the steering gear. Check the steering column and universal joints for freedom of movement. Check the steering gear for freedom of movement. Rectify as necessary
Steering feels tight and does not self-center
Power steering hydraulics noisy operation
  • Power steering fluid level low or contaminated
  • Incorrect specification of power steering fluid
  • Filter in the power steering reservoir blocked
  • Power steering fluid aerated
  • power steering hoses twisted or restricted
Check and top-up the power steering fluid level if required, using the correct specification of fluid. Refer to section 204-00 - Suspension System - General Information of the workshop manual. Check for contaminated fluid. Drain the fluid from the reservoir and visually inspect the filter for obstructions/blockage. Repair/renew as necessary. Check for air ingress into the system. Check the power steering hoses for twisting or restrictions. Rectify as necessary
Power steering pump noisy
  • Power steering fluid level low or contaminated
  • Filter in the power steering reservoir blocked
  • Pump internal components worn or damaged
Check and top-up the power steering fluid level if required. Refer to section 204-00 - Suspension System - General Information of the workshop manual. Check for contaminated fluid. Drain the fluid from the reservoir and visually inspect the filter for obstructions/blockage. Repair/renew as necessary. Check for excessive pump noise. Rectify as necessary
Power steering gear noisy
  • Power steering fluid level low or contaminated
  • Steering gear internal components worn or damaged
Check and top-up the power steering fluid level if required. Refer to the relevant section of the workshop manual. Check for contaminated fluid. Check for excessive steering gear noise. Rectify as necessary
Steering column noisy
  • Steering column fouling or universal joints dry
Check the steering column and universal joints. Rectify as necessary
Power steering feels heavier than normal through its operating range
  • Lack of power assistance
Check the power steering pump pressure. Check the steering column has no damage and rotates freely
Power steering feels too light at speed
Power steering feels too heavy at standstill and low speed

DTC Index

:
  Generic scan tools may not read the codes listed, or may read only 5-digit codes. Match the 5 digits from the scan tool to the first 5 digits of the 7-digit code listed to identify the fault (the last 2 digits give extra information read by the manufacturer-approved diagnostic system).

:
  Intermittent faults may cause DTCs to be logged, however some DTCs may be cleared during an ignition off, ignition on cycle. Carry out a road test (if safe to do so), check the functionality of the system and retrieve any DTCs before turning the ignition off.

DTC Description Possible Causes Action
B1C3173 Steering Column Motor Relay
  • Software error (electric column not installed)
  • Steering column motor relay fault (stuck on)
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column motor circuit for short or open circuit and check/renew the memory control module as necessary
B1C3193 Steering Column Motor Relay
  • Software error (electric column not installed)
  • Memory control module internal relay fault (inoperative)
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, check/renew the control module as necessary
B1C3213 Steering Column Tilt Solenoid
  • Software error (electric column not installed)
  • Steering column motor tilt solenoid open load
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt solenoid circuit for short or open circuit and check/renew the tilt solenoid as necessary
B1C3296 Steering Column Tilt Solenoid
  • Software error (electric column not installed)
  • Steering column motor tilt solenoid thermal overload
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt solenoid circuit for short or open circuit. Check for other relevant DTCs and repair as necessary. Allow the solenoid to cool, clear the DTC and check the solenoid/tilt function operation. If the DTC persists renew the tilt solenoid as necessary
B1C333A Steering Column Tilt Feedback Signal
  • Software error (electric column not installed)
  • Steering column tilt motor moved beyond expected range Sensor circuit open or short circuit Motor position sensor fault
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt solenoid feedback circuit for short or open circuit. Check the solenoid/tilt function operation and range of movement. Renew the tilt solenoid as necessary
B1C3413 Steering Column Telescopic Solenoid
  • Software error (electric column not installed)
  • Steering column motor telescopic solenoid open load
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column telescopic solenoid circuit for short or open circuit and check/renew the tilt solenoid as necessary
B1C3496 Steering Column Telescopic Solenoid
  • Software error (electric column not installed)
  • Steering column motor telescopic solenoid thermal overload
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column telescopic solenoid circuit for short or open circuit. Check for other relevant DTCs and repair as necessary. Allow the solenoid to cool, clear the DTC and check the solenoid/telescopic function operation. If the DTC persists renew the telescopic solenoid as necessary
B1C353A Steering Column Telescopic Feedback Signal
  • Software error (electric column not installed)
  • Steering column telescopic motor moved beyond expected range Sensor circuit open or short circuit Motor position sensor fault
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column telescopic solenoid feedback circuit for short or open circuit. Check the solenoid/telescopic function operation and range of movement. Renew the telescopic solenoid as necessary
B1C363A Steering Column Tilt/Telescope Switch
  • Software error (electric column not installed)
  • Steering column tilt/telescopic switch voltage beyond expected range Sensor circuit open or short circuit Switch fault
Where an electric column adjustment is not installed, no action necessary, clear/ignore DTC. Where an electric column adjustment is installed, refer to the electrical guides and check the column tilt/telescopic switch circuit for short or open circuit. Check the tilt/telescopic switch operation and renew the switch as necessary
C005104 Steering Wheel Position Sensor
  • System internal failure
  • Harness/connector issue
Check the steering angle sensor, connector and circuits. Refer to the electrical guides
C005162 Steering Wheel Position Sensor
  • Signal compare failure
  • Harness/connector issue
Check the steering angle sensor, connector and circuits. Refer to the electrical guides
C005164 Steering Wheel Position Sensor
  • Signal plausibility failure
  • Harness/connector issue
Check the steering angle sensor, connector and circuits. Refer to the electrical guides
C1B1862 Supply Voltage X-Ref Check
  • Inconsistent battery voltages received by air suspension control module
  • Air suspension control module supply circuit short circuit to ground
  • Air suspension control module supply circuit high resistance
  • Air suspension control module failure
Refer to the guided diagnostic routine for this code on the approved diagnostic system. Refer to the warranty policy and procedures manual if a module is suspect
U007388 Control Module Communication Bus 'A' Off
  • CAN bus off
Refer to the Network Communications section of the workshop manual
U012287 Lost Communication With Vehicle Dynamics Control Module
  • CAN module status signals not received from the VDM in the specified time
Check for ABS DTCs. Refer to the Network Communications section of the workshop manual
U012687 Lost Communication With Steering Angle Sensor Module
  • CAN bus fault
  • Steering angle sensor module disconnected
  • Steering angle sensor module not configured
  • Steering angle sensor module failure
  • Harness/connector issue
Check the control module installation/configuration. Refer to the Network Communications section in the workshop manual
U030055 Internal Control Module Software Incompatibility
  • Software incompatibility with ATCM
  • Not configured
Configure the modules using the approved diagnostic system. Refer to the Network Communications section of the workshop manual
U041686 Invalid Data Received From Vehicle Dynamics Control Module
  • ABS fault
Check for dynamic suspension/ABS DTCs. Refer to the relevant section of the workshop manual
U1A1449 CAN Initialization Failure
  • Internal electronic fault
Configure the steering angle sensor module using the approved diagnostic system. Refer to the Network Communications section of the workshop manual
U300262 Vehicle Identification Number
  • Signal compare failure
Program the module using the approved diagnostic system