Toyota RAV4 manuals

Toyota Sienna Service Manual: Cruise Control Switch Circuit

DESCRIPTION

The cruise control main switch operates 8 functions: SET, - (COAST), TAP-DOWN, RES (RESUME), + (ACCEL), TAP-UP, CANCEL, and MODE. The SET, TAP-DOWN, and - (COAST) functions, and the RES (RESUME), TAP-UP, and + (ACCEL) functions are operated with the same switch. The cruise control main switch is an automatic return type switch which turns on only while operating it in the direction of each arrow and turns off after releasing it. The internal contact point of the cruise control main switch is turned on with the switch operation. The ECM then reads the voltage value that has been changed by the switch operation to control MODE, SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL. The dynamic laser cruise control system has two cruise control modes: the constant speed control mode and vehicle-to-vehicle distance control mode.

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 READ VALUE OF INTELLIGENT TESTER

READ VALUE OF INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.
  2.  Turn the ignition switch to the ON position and turn the intelligent tester main switch on.
  3.  Check the DATA LIST for proper functioning of the cruise control main switch.

ECM (Cruise control):

ECM (Cruise control)

OK: When the cruise control main switch is operated, the display changes as shown above.

Result

Result

2 INSPECT CRUISE CONTROL MAIN SWITCH

  1. Remove the cruise control main switch

INSPECT CRUISE CONTROL MAIN SWITCH

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

Standard resistance

Standard resistance

3 INSPECT HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE)

 INSPECT HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE)

  1. Disconnect the b1 connector from the spiral cable.
  2.  Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

4 INSPECT SPIRAL CABLE

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.

HINT:

 INSPECT SPIRAL CABLE

  1. Remove the spiral cable.
  2. Measure the resistance according to the value(s) in the table below.

Standard resistance

Standard resistance

HINT: The spiral cable makes a maximum of approximately 5 rotations

5 CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM)

 CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM)

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

Standard resistance

Standard resistance

REPLACE ECM

Lost Communication with Radar Sensor
DTC U1102 Lost Communication with Radar Sensor DESCRIPTION The laser sensor and distance control ECU transmit the data for general vehicle control and diagnosis function along the communication l ...

Distance Control ECU Power Source Circuit
DESCRIPTION This circuit provides power to operate the distance control ECU. The distance control ECU determines information about the vehicle in front based on data from the laser sensor, and t ...

Other materials:

Disassembly
1. REMOVE FRONT DISC BRAKE BUSH DUST BOOT (a) Using soft jaws on the vise, hold the front disc brake cylinder mounting LH in the vise through aluminum plates. (b) Using a screwdriver and hammer, remove the 2 front disc brake bush dust boots from the front disc brake cylinder mounting LH. ...

For vehicles equipped with mobile communication systems
FOR VEHICLES EQUIPPED WITH MOBILE COMMUNICATION SYSTEMS (a) Install the antenna far away from the ECU and sensors of the vehicle electronic systems as possible. (b) Install an antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle electronic systems. For de ...

Exhaust gas precautions
Harmful substance to the human body is included in exhaust gases if inhaled. WARNINGExhaust gases include harmful carbon monoxide (CO), which is colorless and odorless. Observe the following precautions. Failure to do so may cause exhaust gases enter the vehicle and may lead ...

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