Inspection Procedure

1. Remove IGN fuse from driver side J/B.
2. Check continuity of IGN fuse.

   OK: 

   Continuity 

   Fig 1: Removing IGN Fuse From Driver Side J/B

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : INSPECT FOR SHORT CIRCUIT IN ALL HARNESSES AND COMPONENTS CONNECTED TO IGN FUSE 

OK : GO TO NEXT STEP 

OK: 

Voltage: 10 - 14 V 

NG : INSPECT CHARGING SYSTEM (See  STARTERS  ) 

OK : GO TO NEXT STEP 

IN CASE OF USING HAND-HELD TESTER: 

1. Check the voltage condition output from the ECU displayed on the hand-held tester.

   OK: 

   "Normal" is displayed. 

IN CASE OF NOT USING HAND-HELD TESTER: 

1. Remove the skid control ECU with connectors still connected.
2. Turn the ignition switch ON.
3. Measure voltage between terminals IG2 and GND of skid control ECU.

   OK: 

   Voltage: 10 - 14 V 

   Fig 2: Inspecting Skid Control ECU Terminal Voltage (IG2 Terminal)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : CHECK AND REPLACE SKID CONTROL ECU ASSY 

NG : Go to next step 

1. Disconnect the skid control ECU connectors.
2. Measure resistance between terminals GND of skid control ECU connector and body ground.

   OK: 

   Resistance: 1 Ω or less 

   Fig 3: Inspecting Skid Control ECU Connector (GND Terminal Continuity)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : CHECK AND REPLACE SKID CONTROL ECU ASSY