Inspection Procedure

CHECK DISTANCE CONTROL ECU (IGB VOLTAGE SIGNAL)

Measure the voltage of the wire harness side connector.

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Condition	Specified Condition
B8-5 (IGB) - Body ground	Power switch ON (IG)	10 to 14 V

Fig 1: Identifying B8 Sensor Connector Terminals

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NG: GO TO step 3

OK: GO TO Next Step

CHECK WIRE HARNESS (MILLIMETER WAVE RADAR SENSOR - HYBRID VEHICLE CONTROL ECU)

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
B8-1 (LGND) - A54-1 (LGND)	Below 1 Ω
B8-1 (LGND) - Body ground	10 kΩ or higher

Fig 2: Identifying B8 Sensor And A54 ECU Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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

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

Measure the resistance of the wire harness side connectors.

Standard resistance

TESTER CONNECTION SPECIFIED CONDITION

Tester Connection	Specified Condition
B8-5 (IGB) - K13-13 (IGB)	Below 1 Ω
B8-5 (IGB) - Body ground	10 kΩ or higher

Fig 3: Identifying B8 Sensor And K13 ECU Connector Terminals

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

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