Inspection Procedure

NOTE: When the distance control ECU is replaced with a new one, initialization must be performed (See INITIALIZATION ).

CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR - DISTANCE CONTROL ECU)

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

Standard Resistance

STANDARD RESISTANCE SPECIFICATION

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 1: Identifying A44 Millimeter Wave Radar Sensor And E86 Distance Control ECU Connectors

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK DISTANCE CONTROL ECU (IGB VOLTAGE)

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

Standard Voltage

STANDARD VOLTAGE SPECIFICATION

Tester Connection	Switch Condition	Specified Condition
A44-5 (IGB) - A44-2 (SGND)	Engine switch on (IG)	11 to 14 V

NG: REPLACE DISTANCE CONTROL ECU (See REMOVAL )

Fig 2: Identifying A44 Millimeter Wave Radar Sensor Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK HARNESS AND CONNECTOR (MILLIMETER WAVE RADAR SENSOR - ECM)

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

Standard Resistance

STANDARD RESISTANCE SPECIFICATION

Tester Connection	Condition	Specified Condition
A44-1 (LGND) - A38-44 (LGND)	Always	Below 1 Ω
A44-1 (LGND) - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Identifying A44 Millimeter Wave Radar Sensor And A38 ECM Connectors

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