Inspection Procedure

NOTE: When replacing the ABS & TRACTION actuator assy, perform zero point calibration (see PROBLEM SYMPTOMS TABLE ).

PERFORM ACTIVE TEST BY HAND HELD TESTER (SKID CONTROL BUZZER)

Connect the hand held tester to the DLC3.
Turn the ignition switch on (IG) and turn the hand held tester main switch on.

Select "ACTIVE TEST" on the hand held tester.

ACTIVE TEST: ABS/VSC

ACTIVE TEST - ABS/VSC

Item	Vehicle Condition/Test Details	Diagnostic Note
VSC/BR WARN BUZ	Turns skid control buzzer ON/OFF	Buzzer is heard

Check that the buzzer sounds/stops when turning the skid control buzzer on/off by using the handheld tester.

Result:

RESULT

Buzzer sounds/stops	A
Buzzer does not sound or sounds constantly	B

B: Go to step 2
A: END

HINT:

If troubleshooting has been carried out according to the problem symptoms table, refer back to the table and proceed to the next step (see PROBLEM SYMPTOMS TABLE ).

INSPECT SKID CONTROL BUZZER (POWER SOURCE TERMINAL VOLTAGE)

Disconnect the skid control buzzer connector.
Turn the ignition switch on (IG).
Measure the voltage according to the value(s) in the table below.

Fig 1: Identifying Skid Control Buzzer Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION - VOLTAGE

Tester Connection	Condition	Specified Condition
D18-2 - Body ground	Ignition switch on (IG)	10 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (POWER SOURCE CIRCUIT)
OK: Go to next step.

INSPECT SKID CONTROL BUZZER
1. Disconnect the skid control buzzer connector.
2. Apply battery negative voltage to terminal 1, and battery positive voltage to terminal 2 of the skid control buzzer, and then check that the buzzer sounds.
  OK:
  
  Skid control buzzer sounds.
  
  Fig 2: Inspecting Skid Control Buzzer
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE SKID CONTROL BUZZER
2. OK: Go to next step.

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU TO SKID CONTROL BUZZER) (SEE ELECTRONIC CIRCUIT INSPECTION PROCEDURE )

Disconnect the skid control ECU connector.
Measure the resistance according to the value(s) in the table below.

Fig 3: Identifying Skid Control ECU Connector Terminal BZ

Standard:

TESTER CONNECTION AND SPECIFIED CONDITION - RESISTANCE

Tester Connection	Specified Condition
A34-30 (BZ) - B18-1	Below 1 Ω
A34-30 (BZ) - Body ground	10 kΩor higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (BZ CIRCUIT)
OK: REPLACE ABS & TRACTION ACTUATOR ASSY (SEE REPLACEMENT )

HINT:

If troubleshooting has been carried out according to the problem symptoms table, refer back to the table and proceed to the next step before replacing the part (see PROBLEM SYMPTOMS TABLE ).