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 operated in the directions of the arrows and turns off when it is released. The internal contact point of the cruise control main switch is turned on with the switch operation. Then the ECM 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 the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the tester ON.

(d) Enter the following menus: Powertrain / Cruise Control / Data List.

(e) According to the display on tester, read the "DATA LIST".

ECM (Cruise Control System):





Result:





OK:

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

C -- REPLACE CRUISE CONTROL MAIN SWITCH Removal

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.





(b) Measure the resistance.

Standard resistance:





(c) Reinstall the cruise control main switch.

NG -- REPLACE CRUISE CONTROL MAIN SWITCH Removal
OK -- Continue to next step.

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

(a) Disconnect the spiral cable side connector.





(b) Disconnect the cruise control main switch side connector.

(c) Measure the resistance.

Standard resistance:





(d) Reconnect the spiral cable side connector.

(e) Reconnect the cruise control main switch side connector.

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. Be sure to read the page shown in the brackets. Removal

(a) Remove the spiral cable.





(b) Measure the resistance.

Standard resistance:





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

(c) Reinstall the spiral cable.

NG -- REPLACE SPIRAL CABLE Removal
OK -- Continue to next step.

5. CHECK HARNESS AND CONNECTOR (SPIRAL CABLE - ECM AND BODY GROUND)

(a) Disconnect the E77 ECM connector.

(b) Disconnect the E17 spiral cable (vehicle side) connector.

(c) Measure the resistance.

Standard resistance:





(d) Reconnect the ECM connector.

(e) Reconnect the spiral cable (vehicle side) connector.

NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- REPLACE ECM Removal