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External MAP, Injector Duty, MAF overview
The connection of the External MAP/MAF pin will depend on the desired mode of operation.
Please follow the table in determining where to connect this wire.
Mode of operation
Dip Switch Settings
Pin Installation location
MAF / MAP (0V-5V)
ON – ON – ON
*Connect to signal output from MAF/MAP where signal
range is 0V-5V.
Injector Duty (0%-100%)
OFF – OFF – ON
*Connect to the injector duty signal that is active low. Multi-
Pulse Injection, as is found on some diesel applications, is
NOT
supported. Please verify a single pulse for each
injection event with an oscilloscope prior to operation.
Frequency MAF
(40Hz - 220Hz)
OFF – ON – OFF
*Connect to the frequency MAF signal.
Frequency MAF
(400Hz – 2200Hz)
OFF – ON – ON
*Connect to the frequency MAF signal.
Frequency MAF
(2kHz – 14kHz)
ON – OFF – OFF
*Connect to the frequency MAF signal.
*Please consult the factory service manual to find the appropriate wire to tap for the above connections. It is
acceptable to make this tap close to the sensor/injector or nearer to the ECU itself; whichever is more convenient.
