Golf GTI L4-2.0L (ABA) (1997)
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Check wiring between test box and 4-pin connector for open circuit according to wiring diagram.
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Terminal 2 and test box socket 16.
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Terminal 4 and test box socket 17.
Resistance: maximum 1.5 ohms.
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Additionally, check 4-pin connector terminals for short circuit to one another.
Terminal 4 and test box socket 16
Specification: Infinite Ohms
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Set multimeter to voltage measurement range.
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Check 4-pin connector terminals for short circuit to battery positive (B+) according to wiring diagram.
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Terminal 2 and vehicle Ground.
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Terminal 4 and vehicle Ground.
Specification: 0 volts
If no wiring malfunction is detected:
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Replace Mass Air Flow sensor -G70-.
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Read the readiness code. If DTC memory has been erased, repair must be verified via appropriate display group: Readiness code, creating.