Inspection Procedure

Check operation of stop light.
CHECK:

Check that the stop light turns ON when the brake pedal is depressed and turns OFF when the brake pedal is released.
1. NG : Repair stop light circuit (See INSPECT STOP LIGHT SWITCH CONTINUITY ).
2. OK : Go To Next Step
Check voltage between terminal STP (10) of skid control ECU connector and body ground.

Fig 1: Measuring Voltage Between ECU Connector & Body Ground
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PREPARATION:

Disconnect the skid control ECU connector.

CHECK:

Measure the voltage between terminal 10 of the skid control ECU connector and the body ground when the brake pedal is depressed.

OK:
1. Voltage: 10 to 14 V
1. OK : Check and replace ABS actuator assembly.
2. NG : Go to Next Step
Check for open circuit in harness (including stop light bulb) and connector between skid control ECU and stop light switch (See PROCEDURE ).
1. NG : Repair or replace harness, connector or stop light bulb.
2. OK : Check and replace ABS actuator assembly.