Brake Switch (Cruise Control): Testing and Inspection

[1][2]STOP LIGHT SWITCH CIRCUIT


CIRCUIT DESCRIPTION
When the brake is ON, battery positive voltage normally applies through the STOP fuse and [1][2]stop light switch to terminal STP- of the ECU, and the ECU turns the cruise control OFF.

A fail-safe function is provided so that cancel functions normally, even if there is a malfunction in the stop light signal circuit.

If the harness connected to terminal STP- has an open circuit, terminal STP- will have battery positive voltage and the cruise control will be turned OFF.

Also, when the brake is ON, the magnetic clutch is cut mechanically by the [1][2]stop light switch, turning the cruise control OFF. DTC 12

Stop Light Switch Circuit:

WIRING DIAGRAM

Inspection Procedure / Stop Light Switch Circuit (1 Of 4):

Inspection Procedure / Stop Light Switch Circuit (2 Of 4):

Inspection Procedure / Stop Light Switch Circuit (3 Of 4):

Inspection Procedure / Stop Light Switch Circuit (4 Of 4):

INSPECTION PROCEDURE