How To Proceed With Troubleshooting

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

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

VEHICLE BROUGHT TO WORKSHOP
PROBLEM SYMPTOM CONFIRMATION

CHECK CAN COMMUNICATION SYSTEM*

Refer to the PRECAUTION (See PRECAUTION ).

Check for output DTCs.

Result

RESULT REFERENCE

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

RESULT REFERENCE

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 .

GO TO STEP 10

PROBLEM SYMPTOM CONFIRMATION

Result

RESULT REFERENCE

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 (See 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
END