Inspection Procedure

1. Using the intelligent tester, check for any momentary interruption in the wire harness and connector corresponding to a DTC (See CHECK FOR INTERMITTENT PROBLEMS  ).

   ABS/VSC: 

   ABS/VSC TESTER DISPLAY REFERENCE
   
   

   Tester Display	Measurement Item/Range	Normal Condition
   EFI COM OPN	EFI communication open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal
   STEERING OPN	Steering sensor open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal
   YAW RATE OPN	Yaw rate sensor open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal

   Result 

   RESULT CHART
   
   

   Condition	Proceed to
   There is a constant open circuit	A
   There are no momentary interruptions	B
   There are momentary interruptions	C

   HINT:

   Perform the above inspection before removing the sensor and connector.

B: Go to step  3

C: Go to step  4

A: Go to Next Step 

1. Turn the engine switch off.
2. Check if each sensor or ECM connector is securely connected.

   OK: 

   The connector should be securely connected. 

NG: CONNECT CONNECTOR TO EACH SENSOR OR ECM CORRECTLY 

OK: Go to Next Step 

1. Turn the engine switch off.
2. Record the output DTCs (for ABS, VSC, and CAN communication).

   HINT:

   If the CAN communication system DTC and the relevant sensor DTCs are output simultaneously, troubleshoot the relevant sensor DTCs (for ABS and VSC) after the CAN communication system returns to normal.

   Result 

   RESULT CHART
   
   

   Condition	Proceed to
   DTC (CAN communication system DTC) is output	A
   DTC (ABS and/or VSC DTC) is output	B
   DTC is not output	C

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (See  DIAGNOSTIC TROUBLE CODE CHART   ) 

C: CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION) 

A: INSPECT CAN COMMUNICATION SYSTEM 

1. Turn the engine switch off.
2. Repair or replace the harness or connector.
3. Check for any momentary interruption between the skid control ECU and each sensor or ECM (See CHECK FOR INTERMITTENT PROBLEMS  ).
4. Check that there is no momentary interruption.

1. Turn the engine switch off.
2. Clear the DTC (See DTC CHECK / CLEAR  ).
3. Start the engine.
4. Drive the vehicle and turn the steering wheel to the right and left at a speed of 15 km/h (9 mph) or more.
5. Check that no CAN communication system DTC is output.
6. If ABS and VSC DTCs are output, record them.

   Result 

   RESULT CHART
   
   

   Condition	Proceed to
   DTC output for the CAN communication system	A
   No DTC is output (ABS and/or VSC DTC is output)	B
   No DTC is output (No ABS and/or VSC DTC is output)	C

   HINT:

   The CAN communication system must be normal when repairing each sensor DTC (for ABS and VSC).

B: REPAIR CIRCUIT INDICATED BY OUTPUT DTC (See  DIAGNOSTIC TROUBLE CODE CHART   ) 

C: END 

A: INSPECT CAN COMMUNICATION SYSTEM