Toyota RAV4 manuals

Toyota Sienna Service Manual: Steering Pad Switch Circuit

DESCRIPTION

This circuit sends an operation signal from the steering pad switch to the radio receiver.

If there is an open in the circuit, the navigation system cannot be operated using the steering pad switch.

If there is a short in the circuit, the resulting condition is the same as if the switch were continuously depressed. Therefore, the radio and navigation assembly cannot be operated using the steering pad switch, and the radio and navigation assembly itself cannot function.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE: The vehicle is equipped with an SRS (Supplemental Restraint System) such as the airbags. Before servicing (including removal or installation of parts), be sure to read the precautionary notice for the Supplemental Restraint System (

1 INSPECT RADIO AND NAVIGATION ASSEMBLY

INSPECT RADIO AND NAVIGATION ASSEMBLY

  1. Disconnect the radio and navigation assembly connector R13.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2 INSPECT STEERING PAD SWITCH ASSEMBLY

  1. Disconnect the steering pad switch assembly connector A.

INSPECT STEERING PAD SWITCH ASSEMBLY

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

Standard resistance

Standard resistance

3 INSPECT SPIRAL CABLE SUB-ASSEMBLY

 INSPECT SPIRAL CABLE SUB-ASSEMBLY

  1. Disconnect the steering pad switch assembly and spiral cable sub-assembly connectors.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

NOTICE: The spiral cable is an important part of the SRS airbag system. Incorrect removal or installation of the spiral cable may prevent the airbag from deploying. Be sure to read the page shown in the brackets

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

4 INSPECT STEERING PAD SWITCH CABLE

  1. Disconnect the steering pad switch LH and the steering pad switch RH.

INSPECT STEERING PAD SWITCH CABLE

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

Standard resistance

Standard resistance

5 INSPECT STEERING PAD SWITCH RH

  1. Reconnect the steering pad switch RH.

INSPECT STEERING PAD SWITCH RH

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

Standard resistance

Standard resistance

REPLACE STEERING PAD SWITCH LH

Vehicle Speed Signal Circuit between Radio and Navigation Assembly and Combination Meter
DESCRIPTION The radio and navigation assembly receives a vehicle speed signal from the combination meter and information about the GPS antenna, and then adjusts vehicle position. HINT:   ...

Illumination Circuit
DESCRIPTION Power is supplied to the radio and navigation assembly and steering pad switch illumination when the light control switch is in the TAIL or HEAD position. WIRING DIAGRAM INSPECTI ...

Other materials:

Side Airbag Sensor Assembly LH Circuit Malfunction
DTC B1141/33 Side Airbag Sensor Assembly LH Circuit Malfunction DESCRIPTION The side airbag sensor LH circuit consists of the center airbag sensor assembly and side airbag sensor LH. If the center airbag sensor assembly receives signals from the side airbag sensor LH, it judges whether or ...

Steering Angle Sensor Circuit Malfunction
DTC C1231/31 Steering Angle Sensor Circuit Malfunction DESCRIPTION The steering angle sensor signal is sent to the skid control ECU through the CAN communication system. When there is a malfunction in the communication, it will be detected by the diagnosis function. WIRING DIAGRAM INS ...

Services
General information If the vehicle has a wireless network connection, this enables data to be exchanged between the vehicle and other systems. The wireless network connection is realized via an in-vehicle transmitter and receiver unit or via personal mobile devices brought into the vehicle, for inst ...

В© 2011-2022 Copyright www.tsienna.net