Inspection Procedure

NOTE: When the distance control ECU and/or ECM are replaced with a new one, initialization must be performed (See INSTALLATION ).

CHECK WIRE HARNESS (TERMINAL TC of DLC3 - ECM)

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
A10-27 (TC) - E21-13 (TC)	Always	Below 1Ω

Fig 1: Identifying DLC3 And A10 Connectors Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - ECM)

OK: Go to Next Step

CHECK WIRE HARNESS (TERMINAL CG of DLC3 - BODY GROUND)

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E21-4 (CG) - Body ground	Always	Below 1 Ω

Fig 2: Identifying E21 Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (DLC3 - BODY GROUND)

OK: Go to Next Step

CHECK WIRE HARNESS (TERMINAL TC of DLC3 - BODY GROUND)

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

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
E21-13 (TC) - Body ground	Always	10 kΩ or higher

Fig 3: Identifying E21 Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR OR EACH ECU

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE