How To Proceed With Troubleshooting [11/2015 - ]: Procedure

Result

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See step  2

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 in the problem analysis:

Result

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See step  3

1. Measure the auxiliary battery voltage with the power switch off.

   Standard Voltage

   11 to 14 V

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

   Result

   Proceed to
   NEXT

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See step  4

1. Use the Techstream to check if the CAN communication system is functioning normally (w/ Toyota Safety Sense C: Refer to DIAGNOSIS SYSTEM [11/2015 - 06/2017] w/o Toyota Safety Sense C: Refer to SYSTEM DIAGRAM [11/2015 - ] ).

   Result

   Result	Proceed to
   DTC is not output	A
   DTCs are output (w/ Toyota Safety Sense C)	B
   DTCs are output (w/o Toyota Safety Sense C)	C

Result: 

B 

REFER TO CAN COMMUNICATION SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ]

Result: 

C 

REFER TO CAN COMMUNICATION SYSTEM 

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ]

Result: 

A 

See step  5

1. Clear the DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
2. Recheck for DTCs.

   Result

   Result	Proceed to
   DTC is not output	A
   DTC is output	B

Result: 

B 

REFER TO DIAGNOSTIC TROUBLE CODE CHART 

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2015 - ] 

Result: 

A 

See step  6

1. Refer to Problem Symptoms Table PROBLEM SYMPTOMS TABLE [11/2015 - ] ).

   Result

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

Result: 

B 

See step  8

Result: 

A 

See step  7

1. Operation Check (Refer to OPERATION CHECK [11/2015 - ] )
2. Terminals of ECU (Refer to TERMINALS OF ECU [11/2015 - ] )
3. Data List / Active Test (Refer to DATA LIST / ACTIVE TEST [11/2015 - ] )

   Result

   Proceed to
   NEXT

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See step  8

Result

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See step  9

Result

Result: 

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