volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 4499 > < With Manufacturer's Scan Tool|Page 4497
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Intake Air Temperature Sensor: Testing and Inspection
With Generic Scan Tool

Intake Air Temperature (IAT) Sensor -G72-, Checking

Recommended special tools and equipment

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V.A.G 1526 multimeter or V.A.G 1715 multimeter

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V.A.G 1594 connector test kit

-

Wiring diagram

-

Chilling spray (commercially available)

Test requirements

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The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK:

-

Parking brake must be engaged or else daylight driving lights will be switched on.

Function test

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Connect diagnostic tester. See: Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Diagnostic Tester,
Connecting

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Switch ignition on.

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Under address word 33, select "Diagnostic mode 1: Check measured values."

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Select the measuring value "PID 15: Intake air temperature".

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Check specified value of intake air temperature:

If specified value is not obtained:

-

Continue test according to the following table:

If specified value is obtained:

With Manufacturer's Scan Tool|Page 4499 > < With Manufacturer's Scan Tool|Page 4497