Pre-Crash Safety System How To Proceed With Troubleshooting

Use the intelligent tester to check if the multiplex communication system is functioning normally.

Result:

DTC Condition	Proceed to
DTC is not output	A
DTC is output	B

Use the intelligent tester to check for normally functioning of CAN communication system.

1. Perform bus check (Communication malfunctioning DTC).
   

2. Perform bus check (Communication Bus check).
   

   Result:

   DTC Condition	Proceed to
   DTC is not output	A
   DTC is output	B

Check for DTCs.

1. Record the DTCs.
   

Clear the DTCs.

Recheck for DTCs.

1. Attempt to duplicate the malfunction and check if the DTCs are output again (Click here).
   

   Result:

   DTC Condition	Proceed to
   DTC is not output	A
   DTC is output	B
   No DTC is output, and malfunction can not be duplicate or checked	C

If the result is not listed in the problem symptoms table proceed to A.

If the result is listed in the problem symptoms table proceed to B.

DATA LIST/ACTIVE TEST (Click here).

Terminals of ECU (Click here).