Inspection Procedure

1. Check if the connector is connected.

   OK: The connector should be securely connected. 

NG: CONNECT CONNECTOR TO ECU CORRECTLY 

OK : Go to Next Step 

Fig 1: Identifying Skid Control ECU Connector And ECM Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S1-10 (NEO) - E6-17 (NEO)	Below 1 Ω

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

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   S1-10 (NEO) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : Go to Next Step 

1. Reconnect the ECM connector and the skid control ECU connector.
   Fig 2: Identifying ECM Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Check the signal waveform between terminal NEO (E6-17) of the ECM and body ground for the engine conditions below.

   Standard voltage 

   TESTER CONNECTION ENGINE CONDITION CHART
   
   

   Tester Connection	Engine Condition	Specified Condition
   E6-17 (NEO) - Body ground	OFF (Ignition switch ON)	4.5 to 14 V or below 1 V
   E6-17 (NEO) - Body ground	ON (Idling)	Pulse generation (4.5 to 14 V ←→ below 1 V)

   Fig 3: Signal Waveform Graph

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE ECM 

OK : Go to Next Step 

1. Clear the DTCs (See DTC CHECK / CLEAR  ).
2. Turn the ignition switch to the ON position.
3. Are the same DTCs recorded?

NO : END 

YES : REPLACE ABS AND TRACTION ACTUATOR ASSEMBLY