17
Connecting an Older NTK-Only System to a Bosch LSU
4.2 Sensor
THIS PROCEDURE ONLY APPLIES TO REVISION A ENGINE ANALYZER MODELS WITH
FIRMWARE VERSION 1.0.2, AND REVISION ‘A’ WIRING HARNESSES HAVING
BLACK/WHITE WIRES CONNECTED TO HEADER PIN #24. DATAMAP SOFTWARE
VERSION 1.0.3 OR HIGHER IS REQUIRED TO SELECT OXYGEN SENSOR TYPE(S).
1.)
Measure the electrical resistance of the Bosch Calibration Resistor between
Pins 2 and 6 of the LSU 4.2 Oxygen Sensor. Write this value down and don’t
lose it.
2.)
Cut the 8-Position NTK Connector off of the Single Channel Harness.
3.)
Make the following wiring connections between the Single Channel Harness
and the Bosch sensor. Tape off, or otherwise secure the unused wires.
4.)
From the DataMap Software, switch the O2 Sensor Type to Bosch, and enter
the calibration resistor value into the Calibration Resistance field on the
Configuration screen.
5.)
Briefly power down the unit to allow the new configuration to be recognized.
Header Pin Number
Wire Color
Connect To Bosch Pin
13
Red
Bosch Pin 1 (Black)
15
Green
< NO CONNECTION to Bosch Sensor >
33
Orange
Bosch Pin 3 (Gray)
5
Yellow
Bosch Pin 4 (White)
3
Blue
Bosch Pin 5 (Yellow)
1
White
Bosch Pin 6 (Red)
24
Black/White < NO CONNECTION to Bosch Sensor >
