Checking supply cable, air filter
pressure switch
Tools:
885675 Break-out cable
88890074 Multimeter
1 NOTICE! Turn ignition off.
2 Disconnect the connector from the switch.
3
Connect break-out cable 885675 between the
switch and engine control unit.
4 Use multimeter 88890074 for voltage measure-
ment.
5 NOTICE! Turn ignition on.
Measurement points Nominal value
1–2 U ≈ 2.9 V
1 Disconnect the connector from the switch.
Measurement points Nominal value
1–2 U ≈ 0.8 x battery voltage
Checking air pressure switch
Tools:
885675 Break-out cable
88890074 Multimeter
1 NOTICE! Turn ignition off.
2 Disconnect the connector from the switch.
Do not connect the other end of the adapter cable.
3 Connect break-out cable 885675 to the switch.
4 Use multimeter 88890074 for resistance measure-
ment.
Measurement points Nominal value
1–2 R ≈ 330 Ω
NOTICE! If the
measured value is 2.2 kOhm when the
engine is shut down the switch inside is stuck in active
position.
1
2
P0013494
885675
2
3
4
5
1
2
1
885675
P0013496
30-2 Fault Tracing
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