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Test step 9: > < Test step 7:

A2

Test step 8:
Test step 8:
Windscreen wiper operation signal and wiring to the photosensor for sunlight penetration -G107-
   
Vehicle diagnostic, testing and information system -VAS 5051-, measurement mode: Multimeter, voltage measurement (20 V =)
l  Adapter -V.A.G 1598/11- connected
Test stepTest box -V.A.G 1598 A- socketBeing tested:
l  Test conditions
–  Additional operations
SpecificationRemedies if the specification is not attained
8.114
+
Earth → Note		Input for signal for windscreen wiper operation (terminal “31 b”)
l  Ignition on
l  Windscreen wiper switched off
t  Less than 2 V
–  Use the current flow diagram to locate and rectify a short to positive
   
–  Switch on the windscreen wipers (speed 1)
t  approx. battery voltage
–  Using the current flow diagram, locate and rectify an open circuit in the wiring between the operating and display unit for air conditioner/Climatronic -E87- and the switch for windscreen wiper operation (terminal “31b”)

1)  Earth is at connector “D”, contacts “13” and “14”.
   
Vehicle diagnostic, testing and information system -VAS 5051-, measurement mode: Multimeter, voltage measurement (20 V =)
l  Adapter -V.A.G 1598/11- connected
Test stepTest box -V.A.G 1598 A- socketBeing tested:
l  Test conditions
–  Additional operations
SpecificationRemedies if the specification is not attained
8.248
+
earth → Note1		Wiring to the sunlight penetration photosensor -G107-
l  Ignition on
t  Less than 2 V
–  Use the current flow diagram to locate and rectify a short to positive

2)  1- Earth is at connector “D”, contacts “13” and “14”.
   
Vehicle diagnostic, testing and information system -VAS 5051-, measurement mode: Multimeter, resistance measurement (20 kΩ)
l  Adapter -V.A.G 1598/12- and adapter -V.A.G 1598/11- connected
Test stepTest box -V.A.G 1598 A- socketBeing tested:
l  Test conditions
–  Additional operations
SpecificationRemedies if the specification is not attained
8.348 → Note2
and
earth → Note1		Wiring to the sunlight penetration photosensor -G107-
l  Ignition on
t  ∞ Ω
–  Use the current flow diagram to locate and rectify the short circuit to earth
8.448 → Note2
and
2 → Note3		Wiring to the sunlight penetration photosensor -G107-
l  Ignition on
t  less than 10 kΩ
–  Using the current flow diagram, locate and rectify an open circuit in the wiring between the operating and display unit for air conditioner/Climatronic -E87- and the sunlight penetration photosensor -G107-

3)  2- Adapter -V.A.G 1598/11-
4)  3- Adapter -V.A.G 1598/12-
  Note
The photosensor is connected to connector “A” contact “8” (signal lead) and to connector “D” contact “2” (signal earth).
   

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