How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2005 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

DTCs for the CAN communication system are as follows:
U0073/94, U0123/62, U0124/95, U0126/63, U100/65.
Refer to troubleshooting of each system if DTCs regarding the CAN communication system are not output.

CHECK AND CLEAR DTCs
NEXT: Go to next step.
CHECK CAN BUS LINE
NEXT: Go to next step.

CHECK USING HAND-HELD TESTER VIA CAN VIM

Select "BUS CHECK" (see DIAGNOSIS SYSTEM ).

Result:

RESULT

A	All ECUs and sensors connected to the CAN communication system are displayed.
B	An ECU or sensor not connected to the CAN communication system is displayed.
C	A few ECUs or sensors not connected to the CAN communication system are displayed.

B: COMMUNICATION STOP MODE TABLE (SEE PROBLEM SYMPTOMS TABLE )
C: CHECK FOR AN OPEN IN ONE SIDE OF CAN SUB BUS LINE )

A: Go to next step.

DTC COMBINATION TABLE (SEE PROBLEM SYMPTOMS TABLE )
1. Confirm trouble according to the combination of output DTCs regarding the CAN communication system.
HINT:

Previous CAN communication system DTCs may be the cause if CAN communication system DTCs are output and all ECUs and sensors connected to the CAN communication system are displayed on the hand-held tester's "BUS CHECK" screen via the CAN VIM.

NEXT: Go to next step.
CIRCUIT INSPECTION
NEXT: Go to next step.
IDENTIFICATION OF PROBLEM
NEXT: Go to next step.
REPAIR OR REPLACE
NEXT: Go to next step.
CONFIRMATION TEST
NEXT: Go to next step.

END