Inspection Procedure

Check DTC. See steps  b-  d under PRE-CHECK.

1. YES: Repair circuit indicated by the output code  .
2. NO: Go to next step  .

1. YES: Go to next step  .
2. NO: Connect the connector to the ECU  .

Disconnect the connector from the Skid Control ECU.

1. Turn the ignition switch ON.
2. Measure the voltage between terminals 56 and 29, 83 of Skid Control ECU harness side connector.
   Fig 1: Testing Skid Control ECU Voltages

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Voltage: 10 - 14 V  .

1. OK: Go to next step  .
2. NG: Check for open and short circuit in harness and connector between ECU-IG fuse and Skid Control ECU. See  HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE  .

Check the battery positive voltage.

OK: Voltage: 10 - 14 V  .

1. OK: Go to next step  .
2. NG: Check and repair the charging system. See  CHARGING  .

1. OK: Go to next step  .
2. NG: Repair or replace the Tc terminal circuit  .

In case of using the TOYOTA hand-held tester  :

1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester main switch ON.
3. Select the ACTIVE TEST mode on the hand-held tester.

Check that "ON" and "OFF" of the ABS warning light can be shown on the combination meter by the hand-held tester.

In case of not using the hand-held tester  :

1. Disconnect Skid Control ECU connector.
2. Using service wire, connect terminal WA (23) and GND1 (83) of Skid Control ECU connector.
   Fig 2: Jumping Terminals 29 & 83 Of Skid Control ECU

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Turn the ignition switch ON.

Check the ABS warning light goes off.

1. OK: Check and replace Skid Control ECU  .
2. NG: Go to next step  .

See the combination meter troubleshooting. See TROUBLESHOOTING .

1. OK: Go to next step  .
2. NG: Repair or replace bulb or combination meter  .

1. OK: Check and replace Skid Control ECU  .
2. NG: Repair or replace harness or connector  .