Toyota CH-R Service Manual: Illumination Circuit

Toyota CH-R Service Manual / Audio / Video / Audio And Visual System(for Radio And Display Type) / Illumination Circuit

DESCRIPTION

Power is supplied to the radio and display receiver assembly and steering pad switch assembly illumination when the light control switch is in the tail or head position.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • The vehicle is equipped with a Supplemental Restraint System (SRS) which includes components such as airbags. Before servicing (including removal or installation of parts), be sure to read the precaution for Supplemental Restraint System.

    Click here

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

PROCEDURE

1.

CHECK ILLUMINATION

(a) Check if the illumination for the radio and display receiver assembly, steering pad switch assembly, heater control switch or others (hazard switch, transmission control switch, etc.) comes on when the light control switch is turned to the head or tail position.

Result

Proceed to

Illumination comes on for all components except steering pad switch assembly.

A

Illumination comes on for all components except radio and display receiver assembly.

B

No illumination comes on (radio and display receiver assembly, hazard switch, heater control switch, etc.).

C
B

GO TO STEP 5

C

GO TO LIGHTING SYSTEM

A

2.

CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)

(a) Disconnect the spiral cable with sensor sub-assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

F29-13 (IL+2) - Body ground

Light control switch in tail or head position

11 to 14 V

*a

Front view of wire harness connector

(to Spiral Cable with Sensor Sub-assembly)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Remove the steering pad switch assembly.

Click here

(b) Inspect the steering pad switch assembly.

Click here

(c) Check that the steering pad switch assembly illumination illuminates.

OK:

The steering pad switch assembly illumination illuminates.

NG

REPLACE STEERING PAD SWITCH ASSEMBLY

OK

4.

INSPECT SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

(a) Remove the spiral cable with sensor sub-assembly.

Click here

(b) Inspect the spiral cable with sensor sub-assembly.

Click here

NOTICE:

  • Press and hold the lock located in the center of the spiral cable with sensor sub-assembly to rotate the spiral cable with sensor sub-assembly.
  • The spiral cable with sensor sub-assembly is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable with sensor sub-assembly may prevent the airbag from deploying.
  • As the spiral cable with sensor sub-assembly may break, do not rotate the spiral cable with sensor sub-assembly more than the specified amount.
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY - RADIO AND DISPLAY RECEIVER ASSEMBLY OR BODY GROUND)
NG

REPLACE SPIRAL CABLE WITH SENSOR SUB-ASSEMBLY

5.

CHECK HARNESS AND CONNECTOR (ILLUMINATION SIGNAL)

(a) Disconnect the radio and display receiver assembly connector.

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

Standard Voltage:

Tester Connection

Condition

Specified Condition

F131-15 (ILL+) - Body ground

Light control switch in tail or head position

11 to 14 V

*a

Front view of wire harness connector

(to Radio and Display Receiver Assembly)
OK

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
    Steering Pad Switch Circuit
    DESCRIPTION This circuit sends an operation signal from the steering pad switch assembly to the radio and display receiver assembly. If there is an open in the circuit, the audio system cannot be ...

    Parking Brake Switch Circuit
    DESCRIPTION This circuit is from the skid control ECU (brake actuator assembly) to the radio and display receiver assembly. WIRING DIAGRAM PROCEDURE 1. CHECK ELECTRIC PA ...

    Other materials:

    Toyota CH-R Service Manual > Smart Key System(for Entry Function): Operation Check
    OPERATION CHECK CHECK SMART KEY SYSTEM (for Entry Function) OPERATION NOTICE: Make sure that the smart key system (for Entry Function) has not been canceled before performing this inspection. (a) Check the entry unlock function (driver door, front passenger door). (1) Perform a wireless lock ...

    Toyota CH-R Service Manual > Hood: Adjustment
    ADJUSTMENT CAUTION / NOTICE / HINT *a Centering Bolt *b Standard Bolt HINT: Centering bolts are used to install the hood hinges and hood lock. The hood and hood lock cannot be adjusted with the centering bolts installed. ...

    Toyota C-HR (AX20) 2023-2026 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2026 Copyright www.tochr.net
    0.0088