Toyota Camry (XV70): How To Proceed With Troubleshooting

CAUTION / NOTICE / HINT

HINT:

• Before performing troubleshooting for the dynamic radar cruise control system, perform troubleshooting for the pre-collision system.

  Click here

• *: Use the Techstream.

PROCEDURE

1.	VEHICLE BROUGHT TO WORKSHOP

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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

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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.

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4.	CHECK FOR DTCs (HEALTH CHECK)

(a) Using the Techstream, perform the Health Check.

OK:

System DTCs other than DTCs related to the dynamic radar cruise control system (Radar Cruise1) and dynamic radar cruise control system (Radar Cruise2) are not output.

NG

GO TO DIAGNOSTIC TROUBLE CODE CHART

OK

5.	CHECK MULTI-INFORMATION DISPLAY

(a) Check if a warning message is displayed on the multi-information display in the combination meter assembly.

HINT:

If more than one message is displayed, perform each inspection in the order of A, B and C.

Result	Proceed to
"Cruise Control Malfunction Visit Your Dealer" is displayed	A
One of the following warning messages is displayed: "Radar Cruise Control Unavailable See Owner's Manual" "Radar Cruise Control Unavailable"	B
No dynamic radar cruise control system warnings are displayed	C

B

GO TO STEP 9

C

GO TO STEP 11

A

6.	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

7.	CHECK FOR DTCs*

(a) Using the Techstream, check for DTCs.

Powertrain > Cruise Control > Trouble Codes Powertrain > Radar Cruise2 > Trouble Codes

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

A

GO TO STEP 9

B

8.	RECONFIRM DTC OUTPUT*

(a) Using the Techstream, clear the DTCs.

Powertrain > Cruise Control > Clear DTCs Powertrain > Radar Cruise2 > Clear DTCs

(b) Reproduce the vehicle conditions that were present when the DTCs that were noted were stored.

HINT:

Refer to each corresponding DTC for details on the detection conditions.

Click here

(c) Using the Techstream, check for DTCs.

Powertrain > Cruise Control > Trouble Codes Powertrain > Radar Cruise2 > Trouble Codes

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

A

GO TO SYMPTOM SIMULATION

B

GO TO DIAGNOSTIC TROUBLE CODE CHART

9.	CHECK VEHICLE CONTROL HISTORY*

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

Powertrain > Radar Cruise2 > Utility

Tester Display
Vehicle Control History (RoB)

(b) Make a note of the output Vehicle Control History (RoB).

Result	Proceed to
Vehicle Control History (RoB) is not output	A
Vehicle Control History (RoB) X2013, X2015, X2022, X2026 or X2028 is output	B
Vehicle Control History (RoB) other than X2013, X2015, X2022, X2026 or X2028 is output	C

A

GO TO SYMPTOM SIMULATION

B

GO TO VEHICLE CONTROL HISTORY

C

10.	RECONFIRM VEHICLE CONTROL HISTORY*

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

Powertrain > Radar Cruise2 > Utility

Tester Display
Vehicle Control History (RoB)

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

Powertrain > Radar Cruise2 > 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 SYMPTOM SIMULATION

B

GO TO VEHICLE CONTROL HISTORY

11.	PROBLEM SYMPTOMS TABLE

HINT:

Refer to Problem Symptoms Table.

Click here

Result	Proceed to
Fault is not listed in Problem Symptoms Table	A
Fault is listed in Problem Symptoms Table	B

B

GO TO PROBLEM SYMPTOMS TABLE

A

12.	INSPECT MILLIMETER WAVE RADAR SENSOR ASSEMBLY (BEAM AXIS MISALIGNMENT READING)*

NOTICE:

Before checking for millimeter wave radar sensor beam axis misalignment, make sure that the radiator grille and front bumper are correctly installed and have not been damaged or modified.

(a) Adjust the reflector height.

Triangle Target: Click here

Flat Surface Target: Click here

(b) Place the reflector.

Triangle Target: Click here

Flat Surface Target: Click here

(c) Using the Techstream, check the amount of misalignment.

Body Electrical > Front Radar Sensor > Utility

Tester Display
Front Beam Axis Misalignment Reading

Standard:

Vertical Direction	-5 to 5 deg.
Horizontal Direction	-0.6 to 0.6 deg.

HINT:

The millimeter wave radar sensor assembly automatically calibrates the beam axis while the vehicle is being driven. The specified values apply to the automatic calibration only and do not apply during manual beam axis calibration of the millimeter wave radar sensor assembly.

Result	Proceed to
The beam axis values are within specification	A
The beam axis values are not within specification	B

A

GO TO SYMPTOM SIMULATION

B

ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY Triangle Target: Click here Flat Surface Target: Click here Driving Adjustment: Click here

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