Pinpoint Test K: PSCM (Power Steering Control Module) DTC (Diagnostic Trouble Code) C102D:00 High Friction Inside Power Steering

Refer to Wiring Diagrams POWER STEERING CONTROLS for schematic and connector information.

Normal Operation and Fault Conditions 

REFER to: Power Steering - System Operation and Component Description .

Description 

• The PSCM monitors various inputs and outputs of the EPAS system in order to keep the system operating at peak capacity. Information provided by sensors (steering torque, vehicle speed, vehicle travel distance, ect.) are all compared to programmed and learned information. Likewise, outputs like the motor and steering rack (travel) are tested against programmed and learned information.

Pinpoint Test Applicability 

• This test applies to the following diagnostic concerns:
• This test applies to PSCMDTC C102D High Friction Inside Power Steering only.

This test DOES NOT apply to any other DTC or symptom.

Pinpoint Test Purpose 

• This test verifies the presence of PSCMDTC C102D and determines if the cause is mechanical or electrical in nature.

Diagnostic Aids 

• If DTC C102D sets, steering assist is unaffected during the current drive cycle but steering assist is removed starting at the next ignition cycle. The message center displays STEERING LOSS STOP SAFELY.

• If a damaged bellows boot(s) was discovered during inspection and this pinpoint test

  DOES NOT  lead to the installation of a new EPAS gear or bellows boot(s), ADDRESS the damaged boot(s) before returning the vehicle to the customer.

DTC Fault Trigger Conditions 

Possible Sources 

• Steering gear internal failure

1. NOTE: This procedure must be completed using FDRS. Do not clear DTCs until the FDRS procedure has completed.To complete the diagnosis, navigate to the FDRS Guided Routine tab and carry out the procedure 

   Electronic Power Assist Steering (EPAS) Internal Failure