CHECK HARNESS BETWEEN ECM AND BRAKE SWITCH.

1) Disconnect the connectors from the ECM.

2) Measure the resistance of harness between ECM and brake switch connector.

Connector & terminal

(B136) No. 12 — (B65) No. 1:

QUESTION

Is the resistance less than 1 Ω?

Yes No

Repair open circuit in harness between ECM and brake switch connector.