How To Proceed With Troubleshooting

HINT:

Use the following procedures to troubleshoot the cruise control system.
*: Use a Techstream.

VEHICLE BROUGHT TO WORKSHOP
PROBLEM SYMPTOM CONFIRMATION

CHECK CAN COMMUNICATION SYSTEM*

Check for output DTCs.

Result

CAN COMMUNICATION SYSTEM*

Result	Proceed to
CAN DTC is not output	A
CAN DTC is output	B

HINT:

The ECM of this system is connected to the CAN communication system. Therefore, before starting troubleshooting, be sure to check that there is no trouble in the CAN communication system.

B: PROCEED TO CAN COMMUNICATION SYSTEM

A: GO TO NEXT STEP

DTC CHECK AND CLEAR*
Refer to the DTC CHECK / CLEAR .

DTC CHECK (OTHER THAN CAN SYSTEM DTC)*

Result

CHECK (OTHER THAN CAN SYSTEM DTC)*

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

A: GO TO STEP 7

B: GO TO NEXT STEP

DTC CHART
Refer to the DIAGNOSTIC TROUBLE CODE CHART ( ).

NEXT: GO TO STEP 10

PROBLEM SYMPTOM CONFIRMATION

Result

SYMPTOM CONFIRMATION

Result	Proceed to
Symptom occurs	A
Symptom does not occur	B

A: GO TO STEP 9

B: GO TO NEXT STEP

SYMPTOM SIMULATION
Refer to the ELECTRONIC CIRCUIT INSPECTION PROCEDURE .
PROBLEM SYMPTOMS TABLE
Refer to the PROBLEM SYMPTOMS TABLE .
CIRCUIT INSPECTION
TERMINALS OF ECM
Refer to TERMINALS OF ECM .
IDENTIFICATION OF PROBLEM
REPAIR OR REPLACE
CONFIRMATION TEST