Brake Signal Circuit

BRAKE SIGNAL CIRCUIT

Diagnostic Procedure
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Is a malfunction in the CAN communication indicated in the results?

Yes or No
Yes >> Check CAN communication line. Refer to "DTC U1000 CAN COMMUNICATION LINE". Transmission Control Systems
No >> GO TO 2.

2. CHECK STOP LAMP SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch "ON". (Do not start engine.)





2. Select "ECU INPUT SIGNALS" in "DATA MONITOR" mode for "A/T" with CONSULT-II.
3. Read out ON/OFF switching action of the "BRAKE SW".

OK or NG
OK >> INSPECTION END
NG >> GO TO 3.

3. CHECK STOP LAMP SWITCH








Check continuity between stop lamp switch harness connector E210 terminals 1 (GY) and 2 (P).

Check stop lamp switch after adjusting brake pedal.

OK or NG
OK >> INSPECTION END
NG >> Check the following items. If NG, repair or replace damaged parts.

^ Harness for short or open between battery and stop lamp switch.
^ Harness for short or open between stop lamp switch and unified meter and A/C amp.