Cabrio L4-2.0L (ABA) (1996)
If Tester Lights Up (voltage Supply OK):
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Replace solenoid valve.
If Tester Does Not Light Up:
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Check wiring for open circuit between Test Box socket 50 and terminal 2 of 2 pin harness connector using wiring diagram.
Resistance: 1.5 Ohms maximum.
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Check wiring between central electric and solenoid valve harness connector (terminal 1) using wiring diagram.
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Connect 2-pin harness connector.
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Check DTC memory, then erase.