7.10 CAN bus / Testmodes 7 ADDITIONAL ITEMS: BEYOND BASIC FUEL AND IGNITION CONTROL
• Ignore fluctuations for first - The number of seconds that sensor fluctuations are ignored after startup. This
is to allow conditions to settle down and avoid false alarms.
• MAP sensor check - Enable or disable checking of the MAP sensor input.
• Minimum ADC - minimum valid ADC reading for the MAP sensor
• Maximum ADC - maximum valid ADC reading for the MAP sensor
• Minimum Fluctuation - minimum fluctuation during smooth running
• Maximum Fluctuation - maximum fluctuation during operation
The minimum fluctuation setting is likely the most useful setting here, as it can be used to detect a failed or "stuck"
sensor, or if a hose fell off. A correctly operating MAP sensor will not produce a perfectly flat value on a running
engine.
• MAT sensor check - Enable or disable checking of the MAT sensor input.
• Minimum ADC - minimum valid ADC reading for the MAT sensor
• Maximum ADC - maximum valid ADC reading for the MAT sensor
• Maximum Fluctuation - maximum fluctuation during operation
• CLT sensor check - Enable or disable checking of the CLT sensor input.
• Minimum ADC - minimum valid ADC reading for the CLT sensor
• Maximum ADC - maximum valid ADC reading for the CLT sensor
• Maximum Fluctuation - maximum fluctuation during operation
The CLT sensor should be smooth in operation; the max fluctuations can be used to detect a fault. You’re likely to
see a lower maximum fluctuation value here than on most other sensors. Not only do you have a sensor with a
fairly large thermal mass, but the coolant and engine block aren’t going to change temperature very quickly.
• TPS sensor check - Enable or disable checking of the TPS sensor input.
• Minimum ADC - minimum valid ADC reading for the TPS sensor
• Maximum ADC - maximum valid ADC reading for the TPS sensor
• Maximum Fluctuation - maximum fluctuation during operation
For the TPS, the minimum and maximum ADC values are the more likely settings to detect a fault. You can view
the ADC counts at closed and wide open throttle under the Tools menu when you select Calibrate TPS. A good
starting point is a minimum ADC that is 10 counts below the closed throttle calibration and a maximum ADC 10
counts above the full throttle calibration.
• Battery check - Enable or disable checking of the battery voltage input.
• Minimum voltage - minimum acceptable voltage reading
• Maximum voltage - maximum acceptable voltage reading
• Maximum Fluctuation - maximum fluctuation during operation
This can be used to warn of charging system faults or ground issues causing excessive voltage noise.
• EGO1 sensor check - Enable or disable checking of the EGO1 sensor input.
• Minimum ADC - minimum valid ADC reading for the EGO1 input
• Maximum ADC - maximum valid ADC reading for the EGO1 input
• Minimum Fluctuation - minimum fluctuation during smooth running
AMP EFI MS3Pro manual version 1.202, firmware 1.5.0, 4/21/2017 Page 268
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