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DTC 12 AND 25 STOP LIGHT SWITCH AND BRAKE SWITCH

DTC 12 AND 25 STOP LIGHT SWITCH AND BRAKE SWITCH

TROUBLE SYMPTOM:


• Cruise control cannot be set.

• Cruise control cannot be released.


WIRING DIAGRAM:


CHECK STOP LIGHT AND BRAKE SWITCH CIRCUIT.

Turn the ignition switch to OFF.

Disconnect the stop light and brake switch harness connector.

Turn the ignition switch to ON.

Measure the voltage between harness connector terminal and chassis ground.

Connector & terminal

(B65) No. 2 (+) — Chassis ground (−):

Is the voltage more than 10 V?

Yes


No

• Check the fuse No. 16 (in fuse & relay box).

• Check the harness for open or short between stop light and brake switch and fuse & relay box.


CHECK STOP LIGHT AND BRAKE SWITCH CIRCUIT.

Measure the voltage between harness connector terminal and chassis ground.

Connector & terminal

(B65) 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 stop light and brake switch and fuse & relay box.

• Check the clutch switch and circuit.


CHECK STOP LIGHT AND BRAKE SWITCH CIRCUIT.

Turn the ignition switch to OFF.

Disconnect the ECM harness connector.

Measure the resistance between ECM harness connector terminal and stop light and brake switch harness connector terminal.

Connector & terminal

(B136) No. 8 — (B65) No. 3:

(B136) No. 9 — (B65) No. 1:

Is the resistance less than 10 Ω?

Yes


No

Repair the harness.


CHECK STOP LIGHT AND BRAKE SWITCH.

Remove and check the stop light switch and brake switch.

Are the stop light and brake switch OK?

Yes

Stop light and brake switch circuit are OK.


No

Replace the stop light and brake switch.