Inspection Procedure

WARNING: This page is about a different car, the 2004 Toyota Prius. However, it is still accessible from the selected car via links, so may be relevant.

CHECK HARNESS AND CONNECTOR (BATTERY ECU - IGN FUSE)

Disconnect the B11 battery ECU connector.
Remove the IGN fuse from the driver side J/B.

Check the resistance between the wire harness side connectors.

Standard (Check for open):

RESISTANCE CHECK

Tester Connection	Specified Condition
IG2 (B11-13) - IGN fuse (2)	Below1 Ω

Standard (Check for short):

RESISTANCE CHECK

Tester Connection	Specified Condition
IG2 (B11-13) or IGN fuse (2) - Body ground	10 kΩ or higher

Fig 1: Disconnecting B11 Battery ECU Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NOTE: When taking a measurement with a tester, do not apply excessive force to the tester probe to avoid damaging the holder.

Reinstall the IGN fuse.
Reconnect the battery ECU connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Installing IGN Fuse

OK: BATTERY ECU ASSY (See BATTERY ECU ASSY )