CRUISE CONTROL SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code > 12

CRUISE CONTROL SYSTEM (DIAGNOSTICS) > Diagnostic Procedure with Cancel Code

12

Detected when brake pedal is depressed or malfunction related to stop light & brake switch occurs.

TROUBLE SYMPTOM:

• Cruise control cannot be set.

• Cruise control cannot be released.

WIRING DIAGRAM:

• Gasoline engine model

• Diesel engine model

STEP	CHECK	YES	NO
1.CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT. 1) Turn the ignition switch to OFF. 2) Disconnect the stop light & brake switch harness connector. 3) Turn the ignition switch to ON. 4) Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B65) No. 2 (+) — Chassis ground (−):	Is the voltage 10 V or more?		• Check fuse No. 8 (in fuse & relay box). • Check for open or short circuit in the harness between stop light & brake switch and fuse & relay box.
2.CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT. Measure the voltage between harness connector terminal and chassis ground. Connector & terminal (B65) No. 4 (+) — Chassis ground (−):	Is the voltage 10 V or more?		• Check fuse No. 4 (in fuse & relay box). • Check for open or short circuit in the harness between stop light & brake switch and fuse & relay box.
3.CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT. 1) Turn the ignition switch to OFF. 2) Disconnect the harness connector of ECM. 3) Measure the resistance between ECM harness connector terminal and stop light & brake switch harness connector terminal. Connector & terminal DOHC non-turbo model (B136) No. 12 — (B65) No. 1: (B136) No. 13 — (B65) No. 3: Except for DOHC non-turbo model (B135) No. 12 — (B65) No. 1: (B135) No. 13 — (B65) No. 3: Diesel engine model (B135) No. 19 — (B65) No. 1: (B135) No. 18 — (B65) No. 3:	Is the resistance less than 10 Ω?		Repair the harness.
4.CHECK STOP LIGHT & BRAKE SWITCH. Check the stop light & brake switch.	Is the stop light & brake switch OK?	Replace the ECM.	Replace the stop light & brake switch.