C1552

POWER STEERING: POWER STEERING SYSTEM: C1552: PIG Power Supply Voltage Malfunction

DTC C1552 - PIG Power Supply Voltage Malfunction

DESCRIPTION

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

WIRING DIAGRAM

INSPECTION PROCEDURE
NOTE: If the steering column or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration .

PROCEDURE

1. READ VALUE USING INTELLIGENT TESTER OR TECHSTREAM (PIG POWER SUPPLY)
(a) Turn the ignition switch to OFF.
(b) Connect an intelligent tester or Techstream to the DLC3.
(c) Turn the ignition switch to ON.
(d) Turn the intelligent tester or Techstream on.
(e) Enter the following menus:
(1) Intelligent tester - Select: DIAGNOSIS / OBD/MOBD / CHASSIS / EMPS / DATA LIST /
(2) Techstream - Select: Chassis / EMPS / Data List /
(f) Select the item "PIG Power Supply" in the Data List and read the value displayed on the intelligent tester or Techstream.
(1) Intelligent tester

EMPS:

(2) Techstream

EMPS:

OK:
The normal condition value is displayed on the intelligent tester or Techstream.
NG -- CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND)
OK -- CHECK INTERMITTENT PROBLEMS
2. CHECK HARNESS AND CONNECTOR (POWER STEERING ECU - BATTERY AND BODY GROUND)

(a) Disconnect the connector from the power steering ECU.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE POWER STEERING ECU