F0: Data List - Test Step 03 Air Flow Sensor Opel Senator B

Trouble-shooting: Nominal Value: Cause of Trouble:

(if nominal value not attained)

Ignition ON

· Remove air flow sensor plug 0.1 to 0.3 V · Short circuit of signal lead Ter. 2

(signal lead) with Ter. 3 (+)

· Control unit defective

· Bridge Ter. 3 (+) with Ter. 2 > 4.2 V · Lead interruption or short to ground from

(signal lead) at air flow sensor - Control unit Ter. 9 (+) to AFS Ter. 3

plug with adapter lead from KM-609 - Control unit Ter. 7 (signal lead) to

AFS Ter. 2

· Control unit defective

· Check voltage between 4.9 to 5.1 V · Lead interruption from control unit

Ter. 3 (+) and Ter. 4 (-) at AFS plug Ter. 6 (-) to AFS Ter. 4

with multimeter

If nominal values attained · AFS electrically defective

· Air valve jamming (observe scoring marks)

· Carry out noise check

(see next page)

AFS checking values:

Ter. 2 (signal lead) /Ter.4 (-): 8 to 2500 W

Ter. 3 (+) /Ter.4 (-): 300 to 550 W

Note: The terminal designations are located under the insulation of the AFS plug.

AFS Noise Check

Checking Equipment: Opel Tester or Multimeter MKM-587-A

Checking: Adapt AFS terminals 2, 3 and 4 with leads from KM-609

Example: Checking with Opel Tester

- Red checking lead to AFS Ter. 2 (signal lead)

- Black checking lead to AFS Ter. 4 (ground)

- Adjust Tester: "Multi", "U", "Spec.", "%", "10 V"

- Connect black terminal to battery negative terminal

- Ignition ON

- Open air valve slowly and evenly

Nominal Value: 0.17 to 4.9 and oscilloscope diagram 1

AFS defective if signal same as oscilloscope diagram 2

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Oscilloscope diagram 1

Oscilloscope diagram 2