Inspection Procedure

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

Inspect Fuse (ECU-IG Of Instrument Panel J/B)
1. Remove ECU-IG fuse from the instrument panel J/B.
  
  Fig 1: Identifying ECU-IG Fuse
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check continuity of ECU-IG fuse.
  1. OK: Continuity
1. OK: Go To Next Step .
2. NG: Inspect For Short Circuit In All Harness And Components Connected To ECU-IG Fuse
Inspect Battery (Terminal Voltage)
1. Check the battery positive voltage.
  1. OK: Voltage: 10-14 V
1. OK: Go To Next Step .
2. NG: Check Charging System
Check Voltage Of ECU IG Power Source
In Case Of Using The TOYOTA Hand-Held Tester:
1. Select the DATALIST mode on the TOYOTA hand-held tester.
2. Check the voltage condition output from the ECU displayed on the TOYOTA hand-held tester.
  1. OK: "Normal" Is Displayed.
In Case Of Not Using The TOYOTA Hand-Held Tester:
1. Remove the skid control ECU with connectors still connected.
2. Turn the ignition switch ON, measure voltage between terminals IG1 and GND of skid control ECU connector.
  
  Fig 2: Checking ECU IG Power Source For Voltage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. OK: Voltage: 10-14 V
1. OK: Check And Replace Skid Control ECU Assy
2. NG: Go To Next Step .
Check Continuity (GND Of Skid Control ECU-Body Ground)
1. OK: Check And Repair Harness And Connector
2. NG: Repair Or Replace Harness Or Connector