Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUSE(ECU-B)
1. Remove the ECU-B fuse from the engine room R/B.
2. Check that the continuity exists of ECU-B fuse.
  Standard: Continuity exists.
  
  Fig 1: Locating Fuse(ECU-B)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPLACE FUSE
OK: Go to next step.
CHECK HARNESS AND CONNECTOR (BETWEEN AIR CONDITIONING AMPLIFIER AND BATTERY)
1. Disconnect the "A16" connector from the A/C amplifier assy.
2. Measure voltage between terminal +B of the A/C amplifier assy and body ground.
  Voltage: 10 - 14 V
  
  Fig 2: Disconnecting "A16" Connector From A/C Amplifier Assy
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: Go to next step.

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE