Test sequence

• Connect testing and information system VAS5051. See VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM VAS5051, CONNECTING AND SELECTING FUNCTIONS . Select vehicle system "01 - Engine electronics". Engine must be running at idling speed.

Display on VAS5051:

Fig 1: Identifying Display On VAS5051 - Checking IAT Sensor (1 Of 3)

Courtesy of AUDI OF AMERICA, INC.

• Under -1- select diagnostic function "08 - Read measured value block".

Display on VAS5051:

Fig 2: Identifying Display On VAS5051 - Checking IAT Sensor (2 Of 3)

Courtesy of AUDI OF AMERICA, INC.

1. - Enter display group
   • Enter "004" for "display group number 004" in zone -2- and confirm entry by pressing -Q- button.

Display on VAS5051:

Fig 3: Identifying Display On VAS5051 - Checking IAT Sensor (3 Of 3)

Courtesy of AUDI OF AMERICA, INC.

• Check indication in display field -4-.
  DISPLAY GROUP 004: INTAKE AIR TEMPERATURE WITH ENGINE IDLING
  
  

  	Display zones
  	1	2	3	4
  Display group 004: Intake air temperature with engine idling
  Display	xxxx rpm	xx.x V	xxx.x ° C	xxx.x °C
  Display	Engine speed	Battery voltage	Coolant temperature	Intake air temperature
  Range				-48.0 to 143.0 ° C
  Specif. value	xxxx rpm	12.0 to 15.0 V	80.0 to 110.0 ° C	Between ambient temperature and up to 110 ° C  (1)
  (1) If a temperature is displayed which deviates greatly from the ambient temperature of the sensor, check sensor and sensor wiring for terminal resistances and open circuit.

• Exit function "08 - Read measured value block" by pressing --> button.