Inspection Procedure

NOTE: When replacing the skid control ECU, perform the following operations:

Initialization of linear solenoid valve and calibration (see INITIALIZATION ).
Yaw rate and acceleration sensor zero point calibration (see CALIBRATION ).

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU - DLC3)

Turn the power switch OFF.
Disconnect the A21 ECU connector.

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
A21-24 (TS) - L31-12 (TS)	Always	Below 1 Ω

Fig 1: Identifying A21 And L31 DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
L31-4 (CG) - Body ground	Always	Below 1 Ω

Fig 2: Identifying CG DLC3 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK HARNESS AND CONNECTOR (DLC3 - BODY GROUND)

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

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
L31-12 (TS) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying TS DLC3 Connector Terminals

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 ).

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE SKID CONTROL ECU (See REMOVAL ).