CHECK STOP LIGHT & BRAKE SWITCH CIRCUIT.

Measure the voltage between harness connector terminal and chassis ground.

Connector & terminal

(B65) No. 4 (+) — Chassis ground (−):

QUESTION
Is the voltage 10 V or more?
Yes	No
	• 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.