Inspection Procedure

NOTE: Read freeze frame data using a TOYOTA hand-held tester or OBD II scan tool. Because freeze frame data records the battery condition when the malfunction is detected. When troubleshooting, this is useful for knowing the battery condition.

Check voltage between terminal AM of Battery ECU connector and body ground .

Fig 1: Identifying AM Terminal Of Battery ECU Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Preparation:

Remove the luggage trim.

Check:

Measure the voltage between terminal AM of the Battery ECU connector and body ground.

OK: Voltage: 9 - 14 V

OK: CHECK AND REPLACE BATTERY ECU .

NG: Go to Next Step
Check HV fuse of engine room J/B .

Fig 2: Identifying Engine Room J/B HV Fuse
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Preparation:

Remove the HV fuse from the engine room J/B.

Check:

Check the continuity of the HV fuse.

OK: Continuity

NG: Check for short in all harness and components connected to HV fuse .

OK: CHECK AND REPAIR HARNESS OR CONNECTOR BETWEEN BATTERY AND HV FUSE, AND HV FUSE AND BATTERY ECU .