FlashPro and oil sensor
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- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
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- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
Our vehicle is a 08 UK Spec. FN2 Civic Type R. The wiring harness is the standard Honda Unit. The oil presure warning light worked normally with the standard ecu. When we uploaded the Civic-Si RSP-2-Group N calibration the light continued to work normally. We could not tune this satisfactory. When we uploaded the MAP based Civic Si Race-8-RC440 the oil presure light stoped working. Now if we upload the Group N calibration the light works but the car is tuned on the Race calibration. Surely this cannot be the wiring when the light works with the Group N calibration?
Broderick Motorsport
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- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
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- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
-
- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
-
- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
-
- Posts: 7
- Joined: Tue Jan 18, 2011 4:40 pm
- Location: Ireland
For all 2006+ Civics the engine oil pressure switch is wired into the ECU via pin B7. The ECU then sends the oil light off/on command to the gauges via CAN. As far as I know this works correctly on all year FN2s - many of out users have used race calibrations.
If your oil pressure light is not working then first start by checking voltages on pin B7. Make sure the low oil voltage is less than 0.3V when measured to a logic ground (look in the manual and find a logic ground pin on the ECU). Check the voltage goes to battery voltage when the engine is running. If you're more than 0.3V different either way then the signal may not be close enough to ground or battery voltage to trigger the ECU. Finally use the Honda scan tool to check that the ECU is picking up the oil pressure signal correctly.
If that looks good then the problem lies between the ECU and gauges. To test this you would need to either test the ECU in another vehicle, or the gauges from another vehicle in yours.
If your oil pressure light is not working then first start by checking voltages on pin B7. Make sure the low oil voltage is less than 0.3V when measured to a logic ground (look in the manual and find a logic ground pin on the ECU). Check the voltage goes to battery voltage when the engine is running. If you're more than 0.3V different either way then the signal may not be close enough to ground or battery voltage to trigger the ECU. Finally use the Honda scan tool to check that the ECU is picking up the oil pressure signal correctly.
If that looks good then the problem lies between the ECU and gauges. To test this you would need to either test the ECU in another vehicle, or the gauges from another vehicle in yours.
Hondata