Test sequence

• Connect VAS5051 tester or VAG1551 scan tool and select control module for engine electronics using "address word" 01. See VAS 5051 VEHICLE DIAGNOSTIC, TESTING AND INFORMATION SYSTEM OR VAG1551 SCAN TOOL (ST), CONNECTING AND SELECTING FUNCTIONS .

  Ignition must remain switched on for this.

When indicated on display:

Fig 1: Identifying Scan Tool Display - Checking Intake Air Temperature (IAT) Sensor (1 Of 3)

• Press buttons -0- and -8- to select "Read Measuring Value Block" and press -Q- button to confirm input.

When indicated on display:

Fig 2: Identifying Scan Tool Display - Checking Intake Air Temperature (IAT) Sensor (2 Of 3)

• Press buttons -0-, -0- and -4- to select "display group number 004" and press -Q- button to confirm input.

Indicated on display:

Fig 3: Identifying Scan Tool Display - Checking Intake Air Temperature (IAT) Sensor (3 Of 3)

• Check specified value for Intake Air Temperature (IAT) sensor in display field 4:
  DISPLAY GROUP 004: INTAKE AIR TEMPERATURE (IAT), ENGINE AT IDLE
  
  

  	Display fields
  	1	2	3	4
  Display group 004: Intake Air Temperature (IAT), engine at idle
  Display	xxxx/min	xx.xxx volts	xxx.x °C	xxx.x ° C
  Indicated	Engine speed (RPM)	Battery voltage	Coolant temperature	Intake Air Temperature (IAT)
  Functional range	670 to 6800 RPM	10.000 to 15.000 V	-48.0 to 143.0 ° C	-48.0 to 143.0 ° C
  Specified value	xxxx/min	12.000 to 15.000 V	80.0 to 110.0 ° C	From ambient temperature up to 120 ° C  (1)
  (1) Approximate values: While driving, up to 24 ° C above ambient temperature. If heated while standing, up to120 ° C is possible.