Golf L4-1.8L Turbo (AWW) (2003)
If the specification is not attained:
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Connect VAG1598/31 test box to control module wiring harness. Engine control module remains disconnected.
Checking voltage supply terminal 30
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Measure supply voltage between test box sockets 1+62 using multimeter and adapter cables from VAG1594:
Specification: at least 11.5 V
If the specification is not attained:
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Check wiring connections to relay plate according to wiring diagram.
Checking voltage supply terminal 15
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Measure supply voltage with multimeter and aux. cables from VAG1594 between test box sockets 2 and 3:
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Switch ignition on.
Specification: min. 11.5 V
If the specification is not attained:
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Check wiring connections to relay plate according to wiring diagram.