Toyota Venza Quiz
Theft Deterrent / Keyless Entry

How To Proceed With Troubleshooting

In this manual: Theft Deterrent / Keyless Entry
Introduction — 15Maintenance — 8Audio / Video — 102Garage Door Opener — 8Navigation / Multi Info Display — 81Park Assist / Monitoring — 50Brake (front) — 7Brake (rear) — 7Brake Control / Dynamic Control Systems — 79Brake System (other) — 28Parking Brake — 22Axle And Differential — 44Drive Shaft / Propeller Shaft — 24Mf1a Transfer / 4wd / Awd — 46U660e Automatic Transmission / Transaxle — 1241ar-fe Cooling — 311ar-fe Emission Control — 101ar-fe Engine Control — 1331ar-fe Engine Mechanical — 441ar-fe Fuel — 311ar-fe Intake / Exhaust — 211ar-fe Lubrication — 111ar-fe Starting — 16Cruise Control — 241ar-fe Battery / Charging — 162gr-fe Battery / Charging — 17Networking — 67Power Distribution — 8Power Assist Systems — 34Steering Column — 37Steering Gear / Linkage — 29Alignment / Handling Diagnosis — 4Front Suspension — 39Rear Suspension — 35Tire / Wheel — 4Tire Pressure Monitoring — 35Door / Hatch — 83Exterior Panels / Trim — 56Horn — 4Lighting (ext) — 89Mirror (ext) — 36Sliding Roof / Convertible — 26Window / Glass — 87Wiper / Washer — 30Door Lock — 85Heating / Air Conditioning — 82Interior Panels / Trim — 20Lighting (int) — 37Meter / Gauge / Display — 41Mirror (int) — 9Power Outlets (int) — 10Seat — 84Seat Belt — 43Supplemental Restraint Systems — 131Theft Deterrent / Keyless Entry — 155
~3min read
CAUTION / NOTICE / HINT

HINT:

  • Use the following procedure to troubleshoot the smart key system.
  • *: Use the Techstream.
PROCEDURE

  1. VEHICLE BROUGHT TO WORKSHOP

NEXT

  1. CUSTOMER PROBLEM ANALYSIS

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:

    What

    Vehicle model, system name

    When

    Date, time, occurrence frequency

    Where

    Road conditions

    Under what conditions?

    Running conditions, driving conditions, weather conditions

    How did it happen?

    Problem symptoms
NEXT

  1. INSPECT BATTERY VOLTAGE

(a) Measure the vehicle battery voltage.

Standard Voltage:

11 to 14 V

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

NEXT

  1. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*

(a) Use the Techstream to check if the CAN communication system is functioning normally.

Result

Proceed to

ECU connected, communication line is normally.

A

ECU connected, communication line is malfunctioning.

B

B

GO TO CAN COMMUNICATION SYSTEM
A

  1. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM (LIN)*

(a) Use the Techstream to check if the LIN communication system (LIN) is functioning normally (See page ).


Result

Proceed to

LIN DTC is not output.

A

LIN DTC is output.

B

B

GO TO LIN COMMUNICATION SYSTEM
A

  1. CHECK FOR DTC*

(a) Check for DTCs and note any codes that are output.

(b) Clear the DTCs.

(c) Recheck for DTCs. Based on the DTCs output, try to cause the same steering lock system DTC, engine immobiliser system DTC, wireless door lock control system DTC or smart key system (for start function) DTC to be output by simulating the symptoms indicated by the DTCs.

Result

Proceed to

DTC is not output.

A

Steering lock system DTC is output.

B

Engine immobiliser system DTC is output.

C

Wireless door lock control system DTC is output.

D

Smart key system (for start function) DTC is output.

E

B

GO TO STEERING LOCK SYSTEM

C

GO TO ENGINE IMMOBILISER SYSTEM

D

GO TO WIRELESS DOOR LOCK CONTROL SYSTEM

E

GO TO SMART KEY SYSTEM (for Start Function)
A

  1. PROBLEM SYMPTOMS TABLE

(a) Refer to Problem Symptoms Table (See page ).


Result

Proceed to

Fault is not listed in problem symptoms table.

A

Fault is listed in problem symptoms table.

B

B

GO TO STEP 9
A

  1. OVERALL ANALYSIS AND TROUBLESHOOTING*

(a) Operation Check (See page )


(b) Data List / Active Test (See page )


(c) Terminals of ECU (See page )


NEXT

  1. REPAIR OR REPLACEMENT

NEXT

  1. CONFIRMATION TEST


NEXT

END

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A quick Toyota Venza quiz: every answer comes with an explanation and a link to the manual page.