A4 Quattro Sedan L4-1.8L Turbo (AWM) (2001)
The following harness connectors are located below the coolant expansion tank:
1
-
4-pin harness connector, brown for Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC) -G130- and Oxygen Sensor (O2S)
Heater 1 -Z29- (bank 1 sensor 2)
2
-
6-pin harness connector, black for Heated Oxygen Sensor (HO2S) -G39- before catalytic converter and Oxygen Sensor (O2S) Heater -Z19-
(bank 1 sensor 1)
3
-
3-pin harness connector 1 gray for Engine Speed (RPM) sensor -G28-
4
-
3-pin harness connector, blue for Knock Sensor (KS) 2-G66-
5
-
3-pin harness connector, green for Knock Sensor (KS) 1-G61-
Fig. 2 Component locations Fuel Pump (FP) Relay -J17-
Fuel Pump (FP) Relay -J17- is located at position 4 of central electronics in driver's footwell, left.
Fig. 3 Installation location of brake light switch -F- and brake pedal switch -F47-, clutch vacuum vent valve switch -F36-