Inspection Procedure

CHECK HARNESS AND CONNECTOR (FRONT MILLIMETER WAVE RADAR SENSOR - DRIVING SUPPORT ECU)

Disconnect the B9 sensor connector.
Disconnect the A33 ECU connector.
Measure the resistance according to the value(s) in the table below.
Standard resistance

Fig 1: Identifying B9 Sensor Connector & A33 ECU Connector
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RESISTANCE SPECIFICATION TABLE

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to next step

CHECK DRIVING SUPPORT ECU (IGB VOLTAGE SIGNAL)

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

Fig 2: Identifying Front Millimeter Wave Radar Sensor Connector B9
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VOLTAGE SPECIFICATION TABLE

Tester Connection	Switch Condition	Specified Condition
B9-5 (IGB) - B9-2 (SGND)	Engine switch on (IG)	11 to 14 V

NG: REPLACE DRIVING SUPPORT ECU (See REMOVAL )

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