ECU wiring codes

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dpgnvq

ECU wiring codes

Post by dpgnvq »

Hi
Can anyone give me a link to the pinouts and wiring colour codes for
a legacy 2L. EJ20. The ECU has G5 on the case. I need to trace a
faulty wire to the O2 sensor.
Thanks
Dick
Robert Illan

ECU wiring codes

Post by Robert Illan »

I have the 1992 Legacy service manual ( I use it for my 93 Legacy L
2.2L 5spd, covers turbo as well), Section 2-7 page 78 shows:

O2 Sensor trouble code 32. At sensor 3 wires connector B20:
White(4) Sensor, BW Black/white (1) heater ground, YR yellow/red (2)
heater power.

At ECU 4 wires:
0.6VDC ( my O2 sensor reads 100mVDC rich 33mVDC lean) B48 pin 6 W
white wire,
BW black/white F47 pin 14 and also F27 (turbo F25 non-turbo)pin 1
& 2 ground and also BW F47 pin 20 for manual xmission only, there is
more... B48-20 connects to B48-17 SB (S is what color? or is it for
Shield/ B black) is the shield to B48-6 O2 so the shield is grounded,
YR yellow/red to Ignition relay pin 4 this connects +12VDC to O2
heater.

F47 is a 26 pin connector 1.......13
14......26

B48 is a 22 pin connector reads 1 .......11
12.......22

Robert Illan
Huntsville, Al
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