Unplug the 2-pin connector -1- from the
–
PAS pressure switch -F88--2-.
Check wiring between the test box and
–
the 2-pin plug for interruption according
to the current flow diagram, cable
resistance: max. 1.5 Ω.
Contact at 2-pin plug
–
Additionally test all wiring to each other for short-circuit.
Specified value: ∞ Ω
If the cable is not found to be faulty:
– Connect multimeter for resistance measurement to the contacts of the pressure switch.
Start engine and run in idle, bring the steering wheel in its central position. Inspect
–
pressure switch for continuity.
Specified value: ∞ Ω
Turn the steering wheel up to the steering angle. The pressure switch must switch to
–
continuity.
If the specified values are not reached:
–
Replace PAS pressure switch:
If the specified values are not reached:
–
Replacing engine control unit
Test the signal of the clutch pedal switch
For vehicles 08.97 ►
Special tools, test equipment and aids required
t
Vehicle system tester -V.A.G 1552 - with cable -V.A.G 1551/3-
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2
→ Chassis → Rep.
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Chapter.
Contact to test box 1598/22
Gr.48.
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