Cruise Control Switch Circuit

CRUISE CONTROL SYSTEM: Cruise Control Switch Circuit

Cruise Control Switch Circuit

DESCRIPTION

This circuit sends signals to the ECU depending on the cruise control main switch condition. The battery supplies positive (+) battery voltage to the cruise control main switch. Then terminal CCS of the ECU receives the voltage according to the switch condition.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. READ VALUE USING TECHSTREAM (CRUISE CONTROL MAIN SWITCH)





(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Turn the Techstream on.
(d) Enter the following menus: 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 cruise control main switch operation is performed the results will be same as above.
OK -- REPLACE HYBRID VEHICLE CONTROL ECU
NG -- Continue to next step.
2. CHECK HYBRID VEHICLE CONTROL ECU





(a) Measure the voltage of the connector.
Standard voltage:





OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
NG -- Continue to next step.
3. INSPECT CRUISE CONTROL MAIN SWITCH





(a) Disconnect the H14 ECU connector.
(b) Measure the resistance of the wire harness side connector.
Standard resistance:





OK -- REPLACE HYBRID VEHICLE CONTROL ECU
NG -- Continue to next step.
4. INSPECT CRUISE CONTROL MAIN SWITCH





(a) Measure the resistance of the switch.
Standard resistance:





NG -- REPLACE CRUISE CONTROL MAIN SWITCH
OK -- Continue to next step.
5. REPLACE HYBRID VEHICLE CONTROL ECU





(a) Disconnect the spiral cable connector.
(b) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- Continue to next step.
6. INSPECT SPIRAL CABLE

NOTE: 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 of the cable.
Standard resistance:





NG -- REPLACE SPIRAL CABLE
OK -- Continue to next step.
7. CHECK WIRE HARNESS (SPIRAL CABLE - ECU AND BODY GROUND)





(a) Disconnect the C12 cable connector.
(b) Disconnect the H14 ECU connector.
(c) Measure the resistance of the wire harness side connectors.
Standard resistance:





NG -- REPAIR OR REPLACE HARNESS AND CONNECTOR
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE