How To Proceed With Troubleshooting [11/2016 - ]: Procedure

WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

VEHICLE BROUGHT TO WORKSHOP
Result:

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INSPECT AUXILIARY BATTERY VOLTAGE
1. Measure the auxiliary battery voltage with the power switch off.
  Standard Voltage
  
  11 to 14 V
  
  If the voltage is below 11 V, replace or recharge the auxiliary battery before proceeding to the next step.
Result:

NEXT

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CHECK CAN COMMUNICATION SYSTEM*

Using the Techstream, check if the CAN communication system is functioning normally.

HINT:

Refer to CAN Bus Check in CAN Communication System.

Refer to DIAGNOSIS SYSTEM [11/2016 - ] .

CAN communication system is functioning normally.

Proceed to
OK
NG

Result:

GO TO CAN COMMUNICATION SYSTEM.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2016 - ] .

Result:

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CHECK FOR DTCs* (LANE DEPARTURE ALERT SYSTEM)

HINT:

Refer to DTC Check / Clear.

Refer to DTC CHECK / CLEAR [11/2016 - ] .

Check for DTCs and note any codes that are output.
Chassis > LKA/LDA > Trouble Codes
Clear the DTCs.
Chassis > LKA/LDA > Clear DTCs

Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.

Chassis > LKA/LDA > Trouble Codes

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

Result:

GO TO DTC CHART.

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2016 - ] .

Result:

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PROBLEM SYMPTOMS TABLE

HINT:

Refer to Problem Symptoms Table.

Refer to PROBLEM SYMPTOMS TABLE [11/2016 - ] .

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

Result:

See step 8

Result:

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OVERALL ANALYSIS AND TROUBLESHOOTING*
1. Terminals of ECU
  Refer to TERMINALS OF ECU [11/2016 - ] .
2. Data List / Active Test
  Refer to DATA LIST / ACTIVE TEST [11/2016 - ] .
Result:

NEXT

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ADJUST, REPAIR OR REPLACE
NOTE:
When the forward recognition camera is replaced with a new one, forward recognition camera adjustment must be performed.

Refer to ADJUSTMENT (SEQUENTIAL RECOGNITION) [11/2016 - ] .

Result:

NEXT

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CONFIRMATION TEST
Result:

NEXT

END