Jetta GL L4-1.9L DSL Turbo (ALH) (2001)
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Connect test box VAG 1598/22 (through my 1999) or VAG 1598/31 (from my 2000) to control module wiring harness.
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Disconnect 4-pin connector from MAP sensor -G71- with Intake Air Temperature (IAT) Sensor -G72- (arrow).