How To Proceed With Troubleshooting [10/2017 - 10/2020]: Procedure

Result

Result: 

NEXT 

See step  2

1. Check if the satellite radio and LEXUS ENFORM contracts are valid, or if the contract period has ended using the vehicle inquiry function on TIS.

   Result

   Result	Proceed to
   Both Contracts are valid.	A
   Contract for satellite radio is not valid.	B
   Contract for LEXUS ENFORM is not valid.	C

Result: 

B 

GO TO NAVIGATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 10/2020] 

Result: 

C 

GO TO SAFETY CONNECT SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 10/2020] 

Result: 

A 

See step  3

1. Check if CAN communication system DTCs are output.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020]

   Result

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

Result: 

B 

GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018]  , or refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 10/2020] 

Result: 

A 

See step  4

1. Perform Health Check.

   Refer to HEALTH CHECK [10/2017 - 10/2020]

2. Check for DTCs and note any codes that are output.
3. Clear the DTCs.
4. Recheck for DTCs. Try to reproduce the DTCs by simulating the conditions indicated by the DTCs.

   Result

   Result	Proceed to
   DTCs are not output.	A
   Navigation system DTCs are output.	B
   Safety connect system DTCs are output.	C
   LEXUS ENFORM system DTCs are output.	D

Result: 

B 

GO TO NAVIGATION SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - 10/2020] 

Result: 

C 

GO TO SAFETY CONNECT SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - 10/2020] 

Result: 

D 

GO TO DIAGNOSTIC TROUBLE CODE CHART. Refer to  DIAGNOSTIC TROUBLE CODE CHART [10/2017 - 10/2020]  

Result: 

A 

See step  5

1. Refer to Problem Symptoms Table.

   Refer to PROBLEM SYMPTOMS TABLE [10/2017 - 10/2020] 

   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, perform the simulation method.

   Refer to HOW TO PROCEED WITH TROUBLESHOOTING [10/2017 - 09/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2018 - 09/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [09/2019 - 10/2020]

Result: 

B 

See step  7

Result: 

A 

See step  6

1. Refer to Terminals of ECU.

   Refer to TERMINALS OF ECU [10/2017 - 10/2020] 

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  7

Result

Result: 

NEXT 

See step  8

Result

Result: 

NEXT 

END