Inspection Procedure

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

   ABS/VSC/TRAC: 

   MEASUREMENT ITEM NORMAL CONDITION CHART
   
   

   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 sensor open detection / ERROR or NORMAL	ERROR: Momentary interruption NORMAL: Normal	-

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   There are momentary interruptions	A
   There are no momentary interruptions	B
   There is a constant open circuit	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 ignition switch to 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 ignition switch to OFF.
2. Record the output DTCs (for ABS, VSC, and CAN communication) (See DTC CHECK/CLEAR  ).

   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
   
   

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

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

C : CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION)  (See CHECK FOR INTERMITTENT PROBLEMS  )

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

1. Turn the ignition switch to 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 ignition switch to 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 (See DTC CHECK/CLEAR  ).
6. If ABS and VSC DTCs are output, record them.

   Result 

   RESULT CHART
   
   

   Result	Proceed to
   DTC output (relating to CAN communication system)	A
   DTC output (relating to ABS and/or VSC system)	B
   DTC not 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  (See HOW TO PROCEED WITH TROUBLESHOOTING )