How To Proceed With Troubleshooting [09/2015 - ]: Procedure

Result

Result:  1

NEXT 

See step  2

• When 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 in 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

Result

Result:  1

NEXT 

See step  3

1. 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.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  4

1. Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.

   OK

   Condensation is not likely being produced and the temperature is not high or extremely low.

   HINT: 

   • A humid cabin and a rapid change in temperature may lead to condensation. Condensation in the cabin may cause a short circuit.
   • The navigation system may not operate normally when the temperature is -20°C (-4°F) or less, or 65°C (149°F) or higher.

   Result

   Proceed to
   OK
   NG

Result:  2

NG 

SET CABIN TO APPROPRIATE TEMPERATURE 

Result:  1

OK 

See step  5

1. Refer to Check Navigation System Normal Condition.

   Refer to OPERATION CHECK [09/2015 - ] 

   Result

   Result	Proceed to
   Symptom is not normal operation.	A
   Symptom is normal operation.	B

Result:  2

B 

SYMPTOM IS NORMAL OPERATION 

Result:  1

A 

See step  6

1. Check if CAN communication system DTCs are output.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ]

   Result

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

Result:  2

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result:  1

A 

See step  7

1. Refer to DTC Check/Clear.

   Refer to DTC CHECK / CLEAR [09/2015 - ] 

   Result

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

Result:  2

B 

See step  11

Result:  1

A 

See step  8

1. Refer to DTC Check/Clear.

   Refer to DTC CHECK / CLEAR [09/2015 - ] 

   HINT: 

   The present DTCs may not indicate actual malfunctions depending on the vehicle operating conditions.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  9

1. Refer to DTC Check/Clear.

   Refer to DTC CHECK / CLEAR [09/2015 - ] 

   Result

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

   HINT: 

   • Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores history DTCs.
   • Check the DTCs and inspect the area that the code indicates.

Result:  2

B 

See step  11

Result:  1

A 

See step  10

• *1: w/ Manual (SOS) Switch
• *2: w/ Rear Seat Entertainment System

1. Find the output code in Diagnostic Trouble Code Chart.

   Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ] 

   NOTE:

   • The navigation system outputs DTCs for the following system.
   • When DTCs other than those in Diagnostic Trouble Code Chart for the navigation system are output, refer to Diagnostic Trouble Code Chart for the relevant system.
   • Refer to Audio and Visual System

     Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ]

   • Refer to Parking Assist Monitor System (for Camera built-in ECU)

     Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ]

   • Refer to Safety Connect System

     Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ] *1

   • Refer to Lexus Enform System

     Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ] *1

   • Refer to Rear Seat Entertainment System

     Refer to DIAGNOSTIC TROUBLE CODE CHART [09/2015 - ] *2

   Result

   Result	Proceed to
   DTCs for the audio and visual system are output.	A
   DTCs for the parking assist monitor system (for Camera built-in ECU) are output.	B
   DTCs for the safety connect system are output.*1	C
   DTCs for the LEXUS Enform system are output.*1	D
   DTCs for the rear seat entertainment system are output.*2	E
   DTCs for the navigation system are output.	F

Result:  1

A 

GO TO AUDIO AND VISUAL SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result:  2

B 

GO TO PARKING ASSIST MONITOR SYSTEM (for Camera built-in ECU). Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result:  3

C 

GO TO SAFETY CONNECT SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result:  4

D 

GO TO LEXUS ENFORM SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result:  5

E 

GO TO REAR SEAT ENTERTAINMENT SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2015 - ] 

Result:  6

F 

See step  14

1. Enter the "SD Check" screen. Refer to Check SD Card in Operation Check.

   Refer to OPERATION CHECK [09/2015 - ] 

   Result

   Result	Proceed to
   "OK" is displayed.	A
   "NG" is displayed.	B

Result:  2

B 

REPLACE SD CARD 

Result:  1

A 

See step  12

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [09/2015 - ] 

   Result

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

   HINT: 

   If the symptom does not recur and no DTCs are output, attempt to reproduce the symptoms.

   Refer to PROBLEM SYMPTOMS TABLE [09/2015 - ] 

Result:  2

B 

ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE 

Result:  1

A 

See step  13

1. Refer to Terminals of ECU.

   Refer to TERMINALS OF ECU [09/2015 - ] 

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  14

1. Adjust, repair or replace as necessary.

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  15

1. After clearing DTCs, recheck for DTCs.

   Refer to DTC CHECK / CLEAR [09/2015 - ] 

   Result

   Proceed to
   NEXT

Result:  1

NEXT 

See step  16

Result

Result:  1

NEXT 

END