Dtc C1552 Pig Power Supply Voltage Malfunction

Steering. Corolla. Zre142 Aze141
Power Assist Systems. Corolla. Zre142 Aze141

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

READ VALUE USING TECHSTREAM (PIG POWER SUPPLY)

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

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.

DTC No.
DTC Detection Condition
Trouble Area
C1552
PIG power source circuit malfunction inside ECU
  1. PIG power source circuit
  2. Power steering ECU

WIRING DIAGRAM


Corolla. Zre142 Aze141.Power Assist Systems.Power Steering System (For 2Az-Fe). Dtc C1552 Pig Power Supply Voltage Malfunction


INSPECTION PROCEDURE

NOTICE:
If the steering column assembly or power steering ECU has been replaced, perform the rotation angle sensor initialization and torque sensor zero point calibration (COROLLA_ZRE142 RM00000275305CX.html).
1.READ VALUE USING TECHSTREAM (PIG POWER SUPPLY)

  1. Turn the ignition switch off.

  1. Connect the Techstream to the DLC3.

  1. Turn the ignition switch on (IG).

  1. Turn the Techstream on.

  1. Enter the following menus: Chassis / EMPS / Data List.

  1. Select the item "PIG power supply" in the Data List and read the value displayed on the Techstream.

    EMPS
    Tester Display
    		Measurement Item/Range
    		Normal Condition
    		Diagnostic Note
    PIG power supply
    		PIG power supply/
    Min.: 0 V
    Max.: 20.1531 V
    		11 to 14 V
    		Power steering in operation
    OK:
    The normal condition value is displayed on the Techstream.


NG
Go to step 2
OK

CHECK INTERMITTENT PROBLEMS

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


    Corolla. Zre142 Aze141.Power Assist Systems.Power Steering System (For 2Az-Fe). Dtc C1552 Pig Power Supply Voltage Malfunction

  1. Disconnect the connector from the power steering ECU.

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    A75-1 (PIG) - Body ground
    		Always
    		11 to 14 V

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A75-2 (PGND) - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE POWER STEERING ECU (COROLLA_ZRE142 RM000002XN605AX.html)