Eurovan V6-2800cc 2.8L (AES) (2000)
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Disconnect 4-pin Mass Air Flow sensor harness connector (arrow).
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Switch Fluke 83 multimeter to 20 Volt DC range.
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Connect multimeter between harness connector terminals 1 + 3 using jumper wires from VW 1594 adapter kit.
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specification: 9.0 to 14.5 Volts
If NO Voltage present:
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Switch ignition off.
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Check wiring according to wiring diagram.
Wiring, checking
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Switch ignition off.
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Connect VAG 1598/18 Test Box to ECM wiring harness.
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Check for open circuit between Test Box and 4-pin harness connector using wiring diagram, connecting as follows:
terminal 2 + socket 16
terminal 4 + socket 17
wire resistance: 1.5 Ohms maximum
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Check 4-pin connector wires for shorting to one another.
terminal 4 + socket 16
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specification: infinity Ohms
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Switch Fluke 83 multimeter to 20 Volt DC range
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Check 4-pin harness connector wiring for short to B+ using wiring diagram, connecting as follows:
terminal 2 + vehicle Ground
terminal 4 + vehicle Ground
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specification: 0 Volts
If wiring OK:
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Replace Mass Air Flow sensor -G70-