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.

Check voltage between terminal +B of A/C amplifier connector and body ground.
PREPARATION: Remove A/C amplifier with connectors still connected.

Check: Measure voltage between terminal +B of A/C amplifier connector and body ground. OK: Voltage : 10 - 14 V.

Fig 1: Locating Amplifier Connector +B Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. If OK , proceed to next circuit inspection shown on problem symptoms table. See PROBLEM SYMPTOMS TABLE .
2. NG: Go to step 2.
Check ECU-B fuse.
PREPARATION: Remove ECU-B fuse from instrument panel J/B.

Check: continuity of ECU-B fuse. If OK , continuity exists.

Fig 2: Locating ECU-B Fuse
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: Check for short in all the harness and components connected to the ECU-B fuse. See HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION .
2. If OK , check and repair harness and connector between A/C amplifier and battery.