Inspection Procedure

INSPECT TIRE SIZE
1. Check tire size and condition of all 4 wheels (See WHEEL AND TIRE SYSTEM ).
Standard:

The diameter and air pressure of the tires of all 4 wheels are the same.

NG: REPLACE TIRES SO THAT ALL 4 TIRES ARE SAME IN SIZE

OK: Go to next step
INSPECT SPEED SENSOR ROTOR (See CIRCUIT DESCRIPTION - RIGHT FRONT SPEED SENSOR AND CIRCUIT DESCRIPTION - RIGHT REAR SPEED SENSOR )
NG: REPLACE SENSOR ROTOR

OK: Go to next step
INSPECT SPEED SENSOR (See CIRCUIT DESCRIPTION - RIGHT FRONT SPEED SENSOR AND CIRCUIT DESCRIPTION - RIGHT REAR SPEED SENSOR )
NG: REPLACE SPEED SENSOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR (SPEED SENSOR - SKID CONTROL ECU)

Disconnect the skid control ECU connector, front speed sensor connectors and rear speed sensor connectors.

Measure the resistance according to the value(s) in the table below.

Fig 1: Identifying Speed Sensor And Skid Control ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard:

Front LH:

SKID CONTROL ECU FRONT LH - RESISTANCE TABLE

Tester Connection	Specified Condition
S1-5 (FL+) - A6-2 (FL+)	1 Ω or less
S1-6 (FL-) - A6-1 (FL-)	1 Ω or less

Front RH:

SKID CONTROL ECU FRONT RH - RESISTANCE TABLE

Tester Connection	Specified Condition
S1-10 (FR+) - A7-2 (FR+)	1 Ω or less
S1-9 (FR-) - A7-1 (FR-)	1 Ω or less

Rear LH:

SKID CONTROL ECU REAR LH - RESISTANCE TABLE

Tester Connection	Specified Condition
S1-7 (RL+) - A32-1 (RL+)	1 Ω or less
S1-17 (RL-) - A32-2 (RL-)	1 Ω or less

Rear RH:

SKID CONTROL ECU REAR RH - RESISTANCE TABLE

Tester Connection	Specified Condition
S1-19 (RR+) - A33-1 (RR+)	1 Ω or less
S1-8 (RR-) - A33-2 (RR-)	1 Ω or less