SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4LV Injection and Ignition System | Mixture preparation system, electronic inj.,Gas | Component test | Intake air temperature sender: testing

Test process

–	Connect the -V.A.G. 1551- (-V.A.G. 1552-). Switch on the ignition and enter “address code” 01 to select the engine control unit. (Fault reader: Connecting and selecting the engine control unit → Chapter.)

The display reads:

–	Press 0 and 8 for the function “Read measurement value block” and press Q to confirm the entry.

Rapid data transmission             HELP

Select function XX

The display reads:

–	Press 0, 0 and 4 for “Display group number 4” and press Q to confirm the entry.

Read measurement value block HELP

Enter display group number XXX

The display reads: (1...4 = display fields)

–	Read the intake air temperature value in field 4.

If the target value is not reached.

–	Continue the test according to the following table:

Read measurement value block     4    →

1            2            3            4

Displayed value	Cause	Continue test
-40 °C	Open circuit or short circuit to positive	→ Chapter
120 °C	Short circuit to earth	→ Chapter
Approx. ambient temperature → Note	--	→ Chapter

¹⁾	If the display shows a temperature lower than sender ambient temperature, first test the sender wiring for contact resistances. Note that the sender can heat up due to irradiated heat when the vehicle is stopped.

SEAT Workshop Service and Repair Manuals