Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: 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 operated using the steering pad switch assembly.

If there is a short in the circuit, the same condition as when a switch is continuously depressed occurs.

Therefore, the radio and display receiver assembly cannot be operated using the steering pad switch assembly, and the radio and display receiver assembly itself will not function.

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

PROCEDURE

1.

CHECK HARNESS AND CONNECTOR (STEERING PAD SWITCH SIGNAL)

(a) Disconnect the G3 radio and display receiver assembly connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

G3-21 (SW1) - G3-24 (SWG)

No switch pushed

95 to 105 kΩ

Seek+ switch pushed

Below 2.5 Ω

Seek- switch pushed

313 to 345 Ω

Volume+ switch pushed

950 to 1050 Ω

Volume- switch pushed

2955 to 3265 Ω

G3-22 (SW2) - G3-24 (SWG)

No switch pushed

95 to 105 kΩ

MODE switch pushed

Below 2.5 Ω

On/off hook switch pushed

950 to 1050 Ω

Voice switch pushed

2955 to 3265 Ω

OK

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

NG

2.

INSPECT STEERING PAD SWITCH ASSEMBLY

(a) Remove the steering pad switch assembly.

Click here

(b) Inspect the steering pad switch assembly.

Click here

NG

REPLACE STEERING PAD SWITCH ASSEMBLY

OK

3.

INSPECT SPIRAL CABLE SUB-ASSEMBLY

(a) Remove the spiral cable sub-assembly.

Click here

(b) Inspect the spiral cable sub-assembly.

Click here

OK

REPAIR OR REPLACE HARNESS OR CONNECTOR (RADIO AND DISPLAY RECEIVER ASSEMBLY - SPIRAL CABLE SUB-ASSEMBLY)

NG

REPLACE SPIRAL CABLE SUB-ASSEMBLY

    Speaker Circuit

    System Description

    See More:

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Panoramic View Monitor System(for Hv Model): Open or Short in Steering Angle Sensor +B (C1625)
    DESCRIPTION This DTC is stored if the parking assist ECU receives a signal via CAN communication from the steering sensor that indicates a power supply system problem. This DTC is stored if the television camera assembly receives a signal via CAN communication from the steering sensor that indicates ...

    Toyota Avalon (XX50) 2019-2022 Owners Manual

    Toyota Avalon (XX50) 2019-2022 Service & Repair Manual

    © 2024 Copyright www.tavalon.net
    0.0124