83 lines
1.4 KiB
Markdown
83 lines
1.4 KiB
Markdown
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Wide band oxygen.
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We have cj125 integration
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TODO: document it better
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# cj125 troubleshooting
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We have a few rusEFI console commands relevant for cj125
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``cj125_info``
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``cj125_restart``
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``cj125_calibrate``
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AndreiKA says Prometheus works
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Matthew says 0.3 SOIC-24 boards works
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Wideband controller based on Bosch CJ125 chip
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green is vUr, temperature feedback
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red is duty cycle
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yellow is vUa, the lambda current measurement
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white is converted AFR
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fully operating in <30 seconds
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in to closed loop in ~18 seconds
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P=30
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I=5
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D=0.3
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though you could probably use D=0 since the system is already damped so hard
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50Hz
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[Older SOIC-24 board - double sided assembly](https://github.com/rusefi/hw_modular/tree/master/cj125_Module)
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[Newer LQFP-32 board - single side assembly](https://github.com/rusefi/rusefi/tree/master/hardware/CJ125_board)
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IP Pump Current
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VS/IP=VM=common virtual ground for VS and IP
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H+ Constant +12v
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H- Heater control, low-side
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4.9 pinout courtesy of https://www.wbo2.com/cable/lsuconns.htm
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With SOIC-24 rusEFI module W1=W10=0R means LSU 4.2
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With SOIC-24 rusEFI module W1=W10=Do not populate means LSU 4.9
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Q: Any troubleshooting hints when things do not work?
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A: VM wire between CJ125 and sensor is virtual ground, should measure 2.5v when sensor is connected and when sensor is disconnected.
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