Inspection Procedure

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

   ABS/VSC/TRAC 

   NORMAL CONDITION
   
   

   Tester Display	Measurement Item / Range	Normal Condition	Diagnostic Note
   EFI Communication Open	EFI communication open detection / ERROR or NORMAL	ERROR Momentary interruption NORMAL Normal	-
   Yaw Rate Open	Yaw rate sensor open detection / ERROR or NORMAL	ERROR Momentary interruption NORMAL Normal	-
   Steering Open	Steering angle sensor open detection / ERROR or NORMAL	ERROR Momentary interruption NORMAL Normal	-

   Result 

   RESULT REFERENCE
   
   

   Result	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: Each connector is 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 system and/or CAN communication system) (See DTC CHECK / CLEAR  for ABS and VSC system, or NW-167 for CAN communication system)

   HINT

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

   Result 

   RESULT REFERENCE
   
   

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

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

C: INSPECT CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION)  (See DIAGNOSIS 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 are no momentary interruptions.

1. Turn the engine switch off.
2. Clear the DTCs (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 (See DIAGNOSIS SYSTEM ).
6. If ABS and/or VSC system DTCs are output, record them (See DTC CHECK / CLEAR  ).

   Result 

   RESULT REFERENCE
   
   

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

   HINT:

   The CAN communication system must be normal when performing troubleshooting for each sensor DTC (for ABS and/or VSC system)

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

C: INSPECT CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

A: END