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HOMESERVICE MANUALSVOLKSWAGEN2016TIGUAN R-LINE, AWDREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCEENGINE CONTROL SYSTEMS2.0L - GENERIC SCAN TOOL - ENGINE CODE(S): CCTAST GENERIC SCAN TOOLDIAGNOSIS AND TESTINGDIAGNOSTIC MODES 01 - 09DIAGNOSTIC MODE 08 - REQUEST CONTROL OF ON-BOARD SYSTEM, TEST OR COMPONENT
2016 Volkswagen Tiguan R-Line, AWD

Diagnostic Mode 08 - Request Control Of On-Board System, Test Or Component

2016 Volkswagen Tiguan R-Line, AWDSECTION Diagnostic Mode 08 - Request Control Of On-Board System, Test Or Component

Diagnostic Mode 08 is used to control the operation of an on-board system, test or component. A Mode 8 service can be used to turn on-board system ON or OFF, or to cycle an on-board system, test or component on or off for a specific period of time. The service can also be used to request system status or to report test results.

Test requirements 

  • No DTCs stored in the DTC memory.
  • Intake Air Temperature (IAT) maximum 60 °C.
  • Coolant temperature 80 -110 °C.
  • Throttle valve angle 12.0 - 16.0%.

Function test 

NOTE:

If the accelerator pedal is depressed during the test, the test will be aborted.

-- Connect the scan tool.

-- Start the engine and run at idle for at least 15 minutes.

-- Select "Mode 8: Tank Leak Test".

-- Select "Test-ID 01: Tank Leak Test".

-- Check the specified value of the tank leak test at idle.

-- The following will be displayed on the scan tool screen:

Tank leak test Specified value
  • Test function active
  • Test function is being initiated, please wait
  • Test off
  • Test aborted
 Test OK

-- Switch the ignition OFF.

If the specified result is obtained:

System OK.

If the specified result is Not obtained:

-- Repeat the tank leak test, switch the ignition off and start the engine again and let run for 15 minutes at idle.

-- Switch the ignition OFF.

If the specified result is again Not obtained:

-- A leak may be present. Refer to EVAP SYSTEM, CHECKING FOR LEAKS .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.