Inspection Procedure

NOTE: When replacing the skid control ECU, perform initialization of linear solenoid valve calibration (see INITIALIZATION ).

CHECK HARNESS AND CONNECTOR (SKID CONTROL ECU

Turn the engine switch off.
Disconnect the A21 ECU connector.

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

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

Fig 1: Identifying A21 ECU And L31 DLC3 Connector Terminals

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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

TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

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

Fig 2: Identifying DLC3 Connector Terminals CG

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

TESTER CONNECTION SPECIFIED CONDITION REFERENCE CHART

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

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 ).

Fig 3: Identifying DLC3 Connector Terminals TS

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: REPLACE SKID CONTROL ECU (See REMOVAL )