CHECK INPUT SIGNAL OF STOP LIGHT SWITCH.

1) Turn the ignition switch to OFF.

2) Disconnect the connector from body integrated unit.

3) Measure the voltage between the body integrated unit connector terminal and chassis ground.

Connector & terminal

(B280) No. 2 (+) — Chassis ground (−):

QUESTION

Is the voltage 9 V or more when the brake pedal is depressed and approx. 0 V when the brake pedal is released?

Yes No

Replace the body integrated unit.

Check the stop light system.