C1552

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM (for Hatchback): C1552, C1554: PIG Power Supply Voltage Malfunction
C1554 - Power Supply Relay Failure

DESCRIPTION

When a problem occurs in the system, the power source relay circuit and the motor relay circuit are shut off to stop the power assist. The ECU must be replaced when there is a problem with the relays because each relay is built into the ECU.





WIRING DIAGRAM





INSPECTION PROCEDURE

NOTICE:
* If the power steering ECU assembly has been replaced, perform the torque sensor zero point calibration and assist map writing Programming and Relearning.
* Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1. READ VALUE USING TECHSTREAM (PIG POWER SUPPLY)

(a) Turn the ignition switch off.

(b) Connect the Techstream to the DLC3.

(c) Turn the ignition switch to ON.

(d) Turn the Techstream on.

(e) Enter the following menus: Chassis / EMPS / Data List.

(f) Select the item PIG Power Supply in the Data List and read the value displayed on the Techstream.

EMPS





NG -- CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BODY GROUND)

OK -- USE SIMULATION METHOD TO CHECK Electronic Circuit Inspection Procedure

2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU ASSEMBLY - BODY GROUND) C1524

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER STEERING ECU ASSEMBLY Removal (from 07/2011)