Volkswagen Passat 1995 Official Factory Repair Manual page 1308

Components of engine, checking
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If specified value is obtained:
- Disconnect 2-pin connector -1- from
Intake Air Temperature (IAT) Sensor
-G72- (-2-).
- Remove Intake Air Temperature
(IAT) Sensor -G72- and re-connect to
connector.
- Seal threaded bore for sensor.
- Note value of intake manifold
temperature.
- Spray the sensor with commercially
available chilling spray while
observing the temperature value.
The temperature must decrease.
- End diagnosis and switch ignition off.
If the intake manifold temperature does
not drop:
- Replace Intake Air Temperature
(IAT) Sensor -G72-
item 5 .
- Erase DTC memory of Engine
Control Module (ECM)
26 , Diagnostic mode 4: Reset/erase
diagnostic data.
- Generate readiness code
ST-52 .
Page 31 of 62
24-55
Page 24-16 ,
Page ST-
Page
6/12/2004