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CHECK CRUISE CONTROL MAIN SWITCH

CHECK CRUISE CONTROL MAIN SWITCH

TROUBLE SYMPTOM:

Curise control main switch is not turned to ON and cruise control cannot be set.

Note

When the main relay (built-in cruise control module) operates, the main switch circuit is in normal condition.

The main relay operation can be checked by hearing the operation sound.

This operation sound will be heard when the ignition switch and curise control main switch is turned to ON.


WIRING DIAGRAM:


CHECK CRUISE CONTROL MAIN SWITCH CIRCUIT.

Turn the ignition switch to OFF.

Disconnect the cruise control command switch harness connector.

Turn the ignition switch to ON.

Measure the voltage between harness connector terminal and chassis ground.

Connector & terminal

(B68) No. 4 (+) — Chassis ground (−):

Is the voltage more than 10 V?

Yes


No

• Check the fuse No. 18 (in fuse & relay box).

• Check the harness for open or short between cruise control main switch and fuse & relay box.


CHECK CRUISE CONTROL MAIN SWITCH CIRCUIT.

Turn the ignition switch OFF.

Disconnect the cruise control module harness connector.

Measure the resistance between cruise control module harness connector terminal and cruise control command switch harness connector terminal.

Connector & terminal

(B94) No. 15 — (B68) No. 5:

Is the resistance less than 10 Ω?

Yes


No

Repair the harness.


CHECK CRUISE CONTROL MAIN SWITCH.

Remove and check the cruise control command switch.

Is the cruise control command switch OK?

Yes

Replace the cruise control module.


No

Replace the cruise control command switch.