Toyota Corolla Cross Owners & Service Manuals

Toyota Corolla Cross: Clearance Warning ECU Power Source Circuit

Toyota Corolla Cross (2022-2025) Service Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Intuitive Parking Assist System / Clearance Warning ECU Power Source Circuit

DESCRIPTION

This circuit provides power to operate the clearance warning ECU assembly.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY POWER SOURCE)

(a) Disconnect the I24 clearance warning ECU assembly connector.

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

(1) for HEV Model:

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

I24-1 (IG) - Body ground

Ignition switch ON

11 to 14 V

I24-1 (IG) - Body ground

Ignition switch off

Below 1 V

(2) for Gasoline model:

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

I24-1 (IG) - Body ground

Ignition switch ON

10.5 to 16 V

I24-1 (IG) - Body ground

Ignition switch off

Below 1 V

Result

Proceed to

OK

A

NG (for HEV Model)

B

NG (for Gasoline Model)

C
B

REPAIR OR REPLACE HARNESS OR CONNECTOR
C

GO TO STOP AND START SYSTEM

A

2.

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU ASSEMBLY - BODY GROUND)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I24-31 (E) - Body ground

Always

Below 1 Ω
OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

    READ NEXT:

     Sensor Frozen Indication (Dirty or Frozen)

    DESCRIPTION When the ultrasonic sensor is dirty or frozen, "Parking Assist Unavailable Please Clean Parking Assist Sensor" is displayed on the multi-information display in the combinati

     Parking Assist Monitor System

     Precaution

    PRECAUTION PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTICE: After the ignition switch is turned off, there may be a waiting time before disconnecting the nega

    SEE MORE:

     VEHICLE CONTROL HISTORY (RoB)

    VEHICLE CONTROL HISTORY (RoB) HINT: The Vehicle Control History stores the history of the reject function and system protection operations. The number of occurrences, date and distance are stored in batches for each item. CHECK VEHICLE CONTROL HISTORY (CONTINUOUSLY VARIABLE TRANSAX

     Before Starting Driving Adjustment

    BEFORE STARTING DRIVING ADJUSTMENT CAUTION / NOTICE / HINT NOTICE: When replacing the windshield glass of a vehicle equipped with a forward recognition camera, make sure to use a Toyota genuine part. If a non-Toyota genuine part is used, the forward recognition camera may not be able to be in

    © 2020-2025 Copyright www.tcorollacross.com PT NL