Cruise Control Switch Circuit

CRUISE CONTROL: CRUISE CONTROL SYSTEM: Cruise Control Switch Circuit

Cruise Control Switch Circuit

DESCRIPTION

The cruise control main switch operates 7 functions: SET, - (COAST), TAP-DOWN, RES (RESUME), + (ACCEL), TAP-UP, and CANCEL. 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 hybrid vehicle control ECU then reads the voltage value that has been changed by the switch operation to control SET, - (COAST), RES (RESUME), + (ACCEL), and CANCEL.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM




(a) Connect Techstream to the DLC3.
(b) Turn the power switch on (IG).
(c) Turn the Techstream main switch on.
(d) Select the following menu items: Powertrain / Cruise Control / Data List.
(e) Check the Data List for proper functioning of the cruise control main switch.

Hybrid vehicle control ECU (Cruise control):





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

Result





C -- REPLACE CRUISE CONTROL MAIN SWITCH
A -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
B -- Continue to next step.
2. INSPECT CRUISE CONTROL MAIN SWITCH
(a) Remove the cruise control main switch Removal.
(b) Measure the resistance according to the value(s) in the table below.





Standard resistance:






NG -- REPLACE CRUISE CONTROL MAIN SWITCH
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (CRUISE CONTROL MAIN SWITCH - SPIRAL CABLE)




(a) Disconnect the b1 connector from the spiral cable.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
4. CHECK 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.
- Removal Removal
- Installation Installation
(a) Remove the spiral cable.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:





HINT: The spiral cable can make a maximum of approximately 5 rotations.

NG -- REPLACE SPIRAL CABLE
OK -- Continue to next step.
5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - HYBRID VEHICLE CONTROL ECU AND BODY GROUND)




(a) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE HYBRID VEHICLE CONTROL ECU