A common fault on the VW Golf MK4 is that the ASR or ESP Light can show a fault and display warning light on the dashboard after driving for about 10 minutes. This is normally due to a wiring fault. The ASR/ESP module is waiting for a signal for the alternator load and if this isn't found after 10 minutes then the system shows a fault and error code on the dashboard light.
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VW Golf MK4 ESP/ASR Light Fault Warning after 10 minutes |
The most common place for the wiring to break is just above the gearbox where there is a connector with 4 wires coming from the alternator and disappearing under the battery tray.
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VW Golf MK4 ESP/ASR wiring broken |
The connector plug has the wires and terminals in it, the part number is 1J0
4 wires come into the connector plug and often break.
The order of the wire ASR socket colours and plug numbers is:
1 - Yellow
2 - Blue
3- Green
4 - Brown
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