When connecting a wideband directly to the ME442, if you have used our un-terminated loom, then a 2x3 (6 way) Molex connector is already present for you. The mating part number is Molex 46992-0610.


Later looms already have the directly fitting Lambda (Oval) connector so can be connected directly to an LSU4.9 sensor.


Only 5 connections are actually made to the ECU. The Heater Supply wire (Pin 4 on the wideband lambda connector) needs to run to an ignition switched live.


The Molex pin-out is:


1

ME442 16 - (LSU Heater Gnd)

2

ME442 19 - (LSU UN)

3

ME442 20 - (LSU VM)

4

ME442 49 - (LSU IA)

5

ME442 50 - (LSU IP)

6

RED Runs from this plug, back down the sleeve to the ME442 and loops back along the 3m to end with the other 12V supply wires


For the LSU4.9 the following connection diagram will aid in wiring it up: YOU MUST use the Bosch connector. DO NOT cut the plug off as it contains a calibration resistor.


BOSCH OVAL "17025"

LSU Connector Pin Number

Lambda Function

Molex Pin Number

1

LSU _ IP

5

2

LSU_VM

3

3

Heater -ve

1

4

Heater +ve (run to an ignition switched live)

6

5

LSU_IA

4

6

LSU_UN

2