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Brake Signal Circuit

BRAKE SIGNAL CIRCUIT

CONSULT-II Reference Value:





Diagnostic Procedure
1. CHECK CAN COMMUNICATION LINE
Perform the self-diagnosis. Refer to AT-86, "SELF-DIAGNOSTIC RESULT MODE". Self-Diagnostic Result Mode
Is a malfunction in the CAN communication indicated in the results?
YES >> Check CAN communication line.
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 terminals 3 and 4.





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 combination meter.