POWER STEERING SYSTEM, Diagnostic DTC:C1552, C1554

DTC Code DTC Name
C1552 PIG Power Supply Voltage
C1554 Power Supply Relay Failure

DESCRIPTION

When a problem occurs in the PIG power source and power supply relay system, the fail-safe function works to stop the power assist.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Return-to-normal Condition Note
C1552 PIG Power Supply Voltage PIG power source circuit malfunction

  • EPS fuse

  • Harness or connector

  • Rack and pinion power steering gear assembly

 EPS warning light: Comes on Engine switch on (IG) again -
C1554 Power Supply Relay Failure Power source relay circuit malfunction

  • EPS fuse

  • Harness or connector

  • Rack and pinion power steering gear assembly

 EPS warning light: Comes on Engine switch on (IG) again -

WIRING DIAGRAM

B000VH9E23
*1 from Battery
*2 Power Steering ECU (Rack and Pinion Power Steering Gear Assembly)

CAUTION / NOTICE / HINT

Note


  • If the rack and pinion power steering gear assembly has been replaced, perform assist map writing and torque sensor zero point calibration.

    Click here

  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (RACK AND PINION POWER STEERING GEAR ASSEMBLY - BODY GROUND)


    1. Disconnect the C1 rack and pinion power steering gear assembly connector.

      B000YKFC05
      *a

      Front view of wire harness connector

      (to Rack and Pinion Power Steering Gear Assembly)

      		 - -

    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Condition Specified Condition
      C1-8 (PIG) - Body ground Always 9 to 16 V

    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      C1-7 (PGND) - Body ground Always Below 1 Ω
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR