How To Proceed With Troubleshooting [12/2013 - 11/2016]: Procedure

WARNING: This page is about a different car, the 2016 Toyota Highlander, 2015 Toyota Highlander, and 2014 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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CUSTOMER PROBLEM ANALYSIS
Result:

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CONNECT TECHSTREAM TO DLC3*
HINT:

If the display indicates a communication malfunction, inspect the DLC3.

When any CAN communication system DTCs are output, perform troubleshooting on the CAN communication system first.

Result:

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CHECK DTC AND FREEZE FRAME DATA*
1. Check for DTCs.
  Refer to DTC CHECK / CLEAR [12/2013 - 11/2016]
  
  Powertrain > Engine > Trouble Codes
2. Check for freeze frame data.
  Refer to FREEZE FRAME DATA [12/2013 - 11/2015]
  
  Refer to FREEZE FRAME DATA [11/2015 - 11/2016]
  
  HINT:
  
  Record or print DTCs and freeze frame data if necessary.
Result:

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CLEAR DTC AND FREEZE FRAME DATA*
1. Clear the DTCs and freeze frame data.
  Refer to DTC CHECK / CLEAR [12/2013 - 11/2016]
  
  Powertrain > Engine > Clear DTCs
Result:

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CONDUCT VISUAL INSPECTION
Result:

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SELECT CHECK MODE DIAGNOSIS*

Switch the ECM from normal mode to check mode.

Powertrain > Engine > Utility

Tester Display
Check Mode

HINT:

Refer to Check Mode Procedure.

Refer to CHECK MODE PROCEDURE [12/2013 - 11/2016]

Result:

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CONFIRM PROBLEM SYMPTOMS

Confirm problem symptoms.

HINT:

If the engine does not start, first perform the "Check DTC" procedure and "Conduct Basic Inspection" procedure below.

Result	Proceed to
Malfunction does not occur	A
Malfunction occurs	B

Result:

See step 10

Result:

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SIMULATE SYMPTOMS
HINT:

Refer to Symptom Simulation.

Refer to HOW TO PROCEED WITH TROUBLESHOOTING [12/2013 - 11/2016]

Result:

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CHECK DTC*

Check for DTCs.

Powertrain > Engine > Trouble Codes

HINT:

Refer to DTC Check / Clear.

Refer to DTC CHECK / CLEAR [12/2013 - 11/2016]

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

Result:

See step 12

Result:

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REFER TO DTC CHART
HINT:

Refer to Diagnostic Trouble Code Chart.

Refer to DIAGNOSTIC TROUBLE CODE CHART [12/2013 - 08/2014]

Refer to DIAGNOSTIC TROUBLE CODE CHART [08/2014 - 11/2015]

Refer to DIAGNOSTIC TROUBLE CODE CHART [11/2015 - 11/2016]

Result:

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CONDUCT BASIC INSPECTION

Conduct basic inspection.

HINT:

Refer to Basic Inspection.

Refer to BASIC INSPECTION [12/2013 - 11/2016]

Result	Proceed to
Malfunctioning parts not confirmed	A
Malfunctioning parts confirmed	B

Result:

See step 17

Result:

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REFER TO PROBLEM SYMPTOMS TABLE

HINT:

Refer to Problem Symptoms Table.

Refer to PROBLEM SYMPTOMS TABLE [12/2013 - 11/2016]

Result	Proceed to
Malfunctioning circuit confirmed	A
Malfunctioning parts confirmed	B

Result:

See step 17

Result:

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CHECK ECM POWER SOURCE CIRCUIT
1. Check the ECM power source circuit.
  HINT:
  
  Refer to ECM Power Source Circuit.
  
  Refer to ECM Power Source Circuit [12/2013 - 11/2016]
Result:

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CONDUCT CIRCUIT INSPECTION

Result	Proceed to
Malfunction not confirmed	A
Malfunction confirmed	B

Result:

See step 18

Result:

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CHECK FOR INTERMITTENT PROBLEMS
1. Check for intermittent problems.
  HINT:
  
  Refer to Check for Intermittent Problems.
  
  Refer to CHECK FOR INTERMITTENT PROBLEMS [12/2013 - 11/2016]
Result:

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CONDUCT PARTS INSPECTION
Result:

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IDENTIFY PROBLEM
Result:

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ADJUST AND/OR REPAIR
Result:

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CONDUCT CONFIRMATION TEST
Result: 1

NEXT

END