Golf GTI L4-2.0L (ABA) (1997)
-
Measure the voltage supply.
When display = 1:Specification is 11.0-14.5 volts
When display alternately 0 and 1: Specification Is Fluctuating Between 0.0-12.0 Volts
If No Voltage Is Present:
-
Connect multimeter with test leads from VW 1594 to measure voltage between terminal 1 (ECM side of harness connector) and vehicle Ground.
Specification:11.0-14.5 volts
If again no voltage is present:
-
Check wiring from terminal 1 to relay panel according to wiring diagram.
If Voltage Was Present:
-
Check relevance table, for value of O2S control status, display group 120, display field 4, 1st position from left.
-
Connect multimeter using test leads from VW 1594 between terminal 2 (ECM side of harness connector) and battery positive (B+).
When display = 1:Specification is 11.0-14.5 volts
When display = alternately 0 and 1:Specification is fluctuating between 0.0-12.0 volts
-
Switch ignition off.
If No Voltage Is Present:
-
Connect VAG 1598/18 test box to ECM wiring harness.