Specifications
45
Data Parameters Engine Parameters
COIL SPARK DURAT. T1/1 CYL. 1/4
COIL SPARK DURAT. T1/1 CYL. 2/5
COIL SPARK DURAT. T1/2 CYL. 2/3
COIL SPARK DURAT. T1/2 CYL. 3/4
COIL SPARK DURAT. T1/3 CYL. 1/6
Range: _________________________________________________________ 0 to 5 ms
Used on HFM systems. These parameters represents the spark line duration, or burn time, in
milliseconds (ms) from the ignition coils.
The abbreviations “T1/1,” “T1/2,” and “T1/3” refer to the three ignition coils; the numbers that
follow, “1/4,” “2/5,” “2/3,” “3/4,” “1/6” refer to the cylinders the coils fire.
With the engine running at idle, readings between 0.8 and 1.5 ms are normal for 111 engines. At
idle, readings between 1.5 and 1.9 ms are normal for all other engines.
COIL SPARK VOLTAGE T1/1 CYL. 1/4
COIL SPARK VOLTAGE T1/1 CYL. 2/5
COIL SPARK VOLTAGE T1/2 CYL. 2/3
COIL SPARK VOLTAGE T1/2 CYL. 3/4
COIL SPARK VOLTAGE T1/3 CYL. 1/6
Range: _________________________________________________________ 0 to 500 V
Used on HFM systems. These parameters represents the primary coil spark line, or burn time,
voltage from the ignition coils.
The abbreviations “T1/1,” “T1/2,” and “T1/3” refer to the three ignition coils; the numbers that
follow, “1/4,” “2/5,” “2/3,” “3/4,” and “1/6” refer to the cylinders that the coils fire.
Normal range for most engines running at idle is from 34 to 37 V. With a 111 engine running at
idle the normal range is from 38 to 42 volts.
COMBUSTION TIME CYL. 1
COMBUSTION TIME CYL. 2
COMBUSTION TIME CYL. 3
COMBUSTION TIME CYL. 4
COMBUSTION TIME CYL. 5
COMBUSTION TIME CYL. 6
COMBUSTION TIME CYL. 7
COMBUSTION TIME CYL. 8
Range: _________________________________________________________ 0 to 5 ms
Used on EZ systems. This parameter represents the spark line duration, or burn time, in
milliseconds for each cylinder. Normal range for an engine running at idle is 1.5 to 1.9
milliseconds (ms).
COMPRESSOR CLUTCH
Range: __________________________________________________________ ON/OFF
Used on HFM and ME20 systems. This parameter shows the condition of the A/C compressor
clutch. The display reads ON with air conditioning compressor clutch engaged and OFF when
the clutch is disengaged.
COMPRESSOR EFFICIENCY FACTOR
Range: __________________________________________________________ variable
Used on HFM systems. This parameter is an ECU-calculated factor of supercharger efficiency.
The display should read greater than 1.3 when driving in third gear at 3500 RPM under full load.