Inspection Procedure

WARNING: This page is about a different car, the 2002 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

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: Locating Terminal AM
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 .
1. OK: Check and replace Battery ECU . See page HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .
2. NG: Go to next step.
Check HV fuse of engine room J/B.

Fig 2: Locating 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 .
1. NG: Check for short in all harness and components connected to HV fuse.
2. OK: Go to next step.
Check and repair harness or connector between battery and HV fuse, and HV fuse and Battery ECU . See page HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE .