Toyota Camry (XV70): How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

• Use the following procedure to troubleshoot the lane tracing assist system.
• *: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

NEXT

2.	CUSTOMER PROBLEM ANALYSIS

HINT:

• In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
• Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
• The following 5 items are important points for problem analysis:

  What	Vehicle model, system name
  When	Date, time, occurrence frequency
  Where	Road conditions
  Under what conditions?	Driving conditions, weather conditions
  How did it happen?	Problem symptoms

NEXT

3.

PRE-CHECK

(a) Measure the battery voltage.

Standard voltage:

11 to 14 V

HINT:

If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.

(b) Check the fuses and relays.

(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.

NEXT

4.	CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Using the Techstream, check for CAN communication system DTCs.

Click here

Result	Proceed to
CAN DTCs are not output	A
CAN DTCs are output	B

B

GO TO CAN COMMUNICATION SYSTEM

A

5.	CHECK FOR DTCs*

(a) Using the Techstream, check for DTCs.

Chassis > Lane Control > Clear DTCs

(b) If a DTC is output, record the DTC.

Result	Proceed to
DTCs are not output	A
DTCs are output	B

B

GO TO STEP 7

A

6.	CHECK VEHICLE CONTROL HISTORY*

(a) Using the Techstream, check for Vehicle Control History (RoB).

Chassis > Lane Control > Utility

Tester Display
Vehicle Control History (RoB)

(b) If the Vehicle Control History (RoB) is output, record it.

Result	Proceed to
Vehicle Control History (RoB) is not output	A
Vehicle Control History (RoB) is output	B

A

GO TO PROBLEM SYMPTOMS TABLE

B

GO TO STEP 8

7.	RECHECK FOR DTCs*

(a) Using the Techstream, clear the DTCs.

Chassis > Lane Control > Clear DTCs

(b) Reproduce the detection conditions of the recorded DTC.

HINT:

Refer to the flowchart of each diagnosis code for the diagnosis code detection condition.

Click here

(c) Using the Techstream, check if the DTCs are output again.

Click here

Chassis > Lane Control > Trouble Codes

Result	Proceed to
DTCs are not output	A
DTCs are output	B

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

A

8.	RECHECK VEHICLE CONTROL HISTORY*

(a) Using the Techstream, clear the Vehicle Control History (RoB).

Chassis > Lane Control > Utility

Tester Display
Vehicle Control History (RoB)

(b) Using the Techstream, check for Vehicle Control History (RoB).

Chassis > Lane Control > Utility

Tester Display
Vehicle Control History (RoB)

Result	Proceed to
Vehicle Control History (RoB) is not output	A
Vehicle Control History (RoB) is output	B

A

GO TO PROBLEM SYMPTOMS TABLE

B

GO TO VEHICLE CONTROL HISTORY

READ NEXT: