Inspection Procedure

HINT:

Troubleshoot in accordance with the chart below for each trouble symptom.

Fig 1: Inspection Procedure

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1. Check operation of the ABS warning light. 

   PREPARATION: 

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

   CHECK: 

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

   HINT:

   ABS warning light turns "OFF" automatically 2 seconds after it is turned "ON".

   OK: Check and replace ABS ECU. 

   NG: Go to next step. 

2. Check ABS warning light. 

   See combination meter troubleshooting. See TROUBLESHOOTING .

   NG: Repair bulb or combination meter assembly. 

   OK: Go to next step. 

3. Check ABS solenoid relay. 

   PREPARATION: 

   Remove the ABS solenoid relay from the engine room R/B No. 2.

   CHECK: 

   Check continuity between each terminal of ABS solenoid relay.

   OK: 

   Fig 2: Continuity Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   CHECK: 

   1. Apply battery positive voltage between terminals 4 and 6.
   2. Check continuity between each terminal of ABS solenoid relay.

   OK: 

   Fig 3: Continuity Table

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   CHECK: 

   Connect the + test lead to terminal 5 and the - lead to terminal 3. Check continuity between the terminals.

   OK: Continuity 

   If there is no continuity, connect the + test lead to terminal 5 and the - lead to terminal 3. Recheck continuity between terminals.

   NG: Replace ABS solenoid relay. 

   Fig 4: View Of Relay Terminals

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Repair or replace and check for open circuit in harness and connector between DLC1 and ABS solenoid relay and body ground (See  HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS  ). 

4. Check that the ABS ECU connectors are securely connected to the ABS ECU. 

   NO: Connect the connector to the ABS ECU. 

   YES: Go to next step. 

5. Check operation of the ABS warning light (See step 1). 

   OK: Check and replace ABS ECU. 

   NG: Go to next step. 

6. Is DTC output. 

   Check DTC. See PRE-CHECK  .

   YES: Repair circuit indicated by the output code. 

   NO: Go to next step. 

7. Does ABS warning light go off if short pin is removed. 

   NO: Check for short circuit in harness and connector between warning light and DLC1 and ABS ECU (See  HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS  ). 

   YES: Go to next step. 

8. Check ABS solenoid relay (See step   3 ). 

   NG: Replace ABS solenoid relay. 

   OK: Check for short circuit in harness and connector between DLC1 and ABS solenoid relay (See  HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS  ).