Inspection Procedure

1. Is DTC output for ABS?

   Standard: 

   CHECK Diagnostic Trouble Codes CHART
   
   

   DTC is not output	A
   DTC is output	B

1. B: REPAIR CIRCUIT INDICATED BY OUTPUT CODE 
2. A: GO TO NEXT STEP. 

1. NG: CONNECT CONNECTOR TO ECU 
2. OK: GO TO NEXT STEP. 

1. Check the battery voltage.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   Battery terminal ((+)) - ((-))	11 to 14 V

1. NG: INSPECT CHARGING SYSTEM 
2. OK: GO TO NEXT STEP. 

WHEN USING HAND-HELD TESTER: 

1. Connect the hand-held tester to the DLC3.
2. Start the engine.
3. Select the DATA LIST mode on the hand-held tester.
4. Read the voltage condition output from the ECU displayed on the hand-held tester.
   MEASUREMENT ITEM / RANGE (DISPLAY) CHART
   
   

   Item	Measurement Item / Range (Display)	Normal Condition
   IG VOLTAGE	ECU power supply voltage / TOO LOW / NORMAL	NORMAL: 9.5 V or over TOO LOW: Below 9.5 V

   OK: "Normal" is displayed. 

WHEN NOT USING HAND-HELD TESTER: 

1. Disconnect the skid control ECU connector.
2. Turn the ignition switch ON position.
3. Measure the voltage according to the value (s) in the table below.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   S27-46 (IG1) - S27-32 (GND)	11 to 14 V

   Fig 1: Inspecting Skid Control ECU Terminal Voltage IG1 Terminal)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: GO TO NEXT STEP. 

1. Disconnect the skid control ECU connector and combination meter connector.
2. Measure the resistance according to the value (s) in the table below.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   C11-17 - S27-29 (WA)	Below 1 Ω

3. Measure the resistance according to the value (s) in the table below.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   S27-29 (WA) - Body ground	10 kΩ or higher

   Fig 2: Checking Harness And Connector (Skid Control ECU - Combination Meter)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: GO TO NEXT STEP. 

1. Disconnect the skid control ECU connector.
2. Measure the resistance according to the value (s) in the table below.

   Standard: 

   SPECIFICATION TESTER CONNECTION
   
   

   Tester Connection	Specified Condition
   S27-32 (GND) - Body ground	Below 1 Ω

   Fig 3: Checking Harness And Connector (Skid Control ECU - Body Ground)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
2. OK: REPLACE ABS & TRACTION ACTUATOR ASSY (See  REPLACEMENT  )