Power Steering System

POWER STEERING: POWER STEERING SYSTEM: C1552/22: PIG Power Supply Voltage Malfunction
C1552/22 - PIG Power Supply Voltage Malfunction

DESCRIPTION

When a problem occurs in the system, the power source relay circuit is shut off to stop the power assist.





WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (PIG POWER SUPPLY)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch ON.

(c) Turn the Techstream on.

(d) Check the IG power supply. Enter the following menus: Chassis / EMPS / Data List.

EMPS





OK -- CHECK INTERMITTENT PROBLEMS
NG -- Continue to next step.

2. CHECK HARNESS AND CONNECTOR (BATTERY - POWER STEERING ECU)

(a) Disconnect the A1 power steering ECU connector.





(b) Measure the voltage of the wire harness side connector.

Standard voltage:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE POWER STEERING ECU