Toyota CH-R Service Manual: PIG Power Supply Voltage (C1552,C1554)

Toyota CH-R Service Manual / Power Assist Systems / Power Steering System / PIG Power Supply Voltage (C1552,C1554)

DESCRIPTION

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

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
  • PIG power source circuit
  • Power steering ECU assembly

EPS warning light: Comes on

Ignition switch ON again

-

C1554

Power Supply Relay Failure

Power source relay circuit malfunction

  • EPS fuse
  • PIG power source circuit
  • Power steering ECU assembly

EPS warning light: Comes on

Ignition switch ON again

-

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • If the power steering ECU 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 (POWER STEERING ECU ASSEMBLY - BODY GROUND)

(a) Disconnect the F68 power steering ECU assembly connectors.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

F68-1 (PIG) - Body ground

Ignition switch ON

9 to 16 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

F68-2 (PGND) - Body ground

Always

Below 1 Ω

*a

Front view of wire harness connector

(to Power Steering ECU Assembly)

OK

REPLACE POWER STEERING ECU ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    Assist Map Number Mismatch (C1582)
    DESCRIPTION When an incorrect ECM, main body ECU (multiplex network body ECU) or skid control ECU (brake actuator assembly) is installed after the assist map has been written to the power steerin ...

    Torque Sensor1 (C1511-C1514,C1517)
    DESCRIPTION The torque sensor converts the rotational torque received from the steering wheel into electric signals and sends them to the power steering ECU assembly. DTC No. ...

    Other materials:

    Toyota CH-R Service Manual > Pre-collision System: Fail-safe Chart
    FAIL-SAFE CHART FAIL-SAFE FUNCTION (a) When a malfunction occurs in the pre-collision system, a message will be displayed on the multi-information display and the pre-collision system will be disabled depending on the malfunction. Warning Message Cause DTC No. ...

    Toyota CH-R Service Manual > Lighting System: Power Source Circuit
    DESCRIPTION When the ignition switch is ON or the operation conditions of the headlights are met, the main body ECU (multiplex network body ECU) supplies power to the headlight ECU sub-assemblies via the No. 1 integration relay. When the ignition switch is ON, the main body ECU (multiplex netw ...

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    KIA Niro EV / Hybrid (SG2) - (2021-2023) - Owner's manual

    © 2017-2024 Copyright www.tochr.net
    0.0125