Data Parameters

When troubleshooting a malfunction, the ECM and BCM data display can be used to compare the vehicle with problems to a vehicle which is functioning property.

A brief summary of each parameter is provided below:

EDO1 The Throttle Position Sensor (TPS) is displayed in degrees from -10 to 90.

ED02 The Manifold Air Pressure Sensor (MAP) is displayed in kilopascals (kPa) from 14 to 109.

ED03 The Computed Barometric pressure (BARO) is displayed in kilopascals (kPa) from 61 to 103.

ED04 The coolant temperature is displayed in degrees Celsius (~C) from -40~ to 151~.

ED05 The Manifold Air Temperature Sensor (MAT) also called Air Temperature Sensor is displayed in degrees Celsius (~C) from -40 to 151.

ED06 The injector pulse width is displayed in milliseconds (ms), from 0 to 99.9.

ED07 The oxygen sensor voltage is displayed in volts from 0 to 1.14.

ED08 The spark advance is displayed in degees, from 0 to 52.

ED1O The battery voltage is read in volts, from 0 to 15.5.

ED11 The engine speed is displayed in RPM from 0 to 6370.

ED12 The vehicle speed is displayed in Miles Per Hour (MPH) from 0 to 159.

ED18 The oxygen sensor cross counts is displayed as the number of times the 02 sensor crossed the reference line each second.

ED19 The fuel integrator is displayed in counts, from 88 to 160.

ED26 The VCC temperature is displayed as a voltage level at the ECM. The normal range is from 0 to 5.12 volts.

ED70 The cruise servo position is displayed in percent (%) from 0 to 100. A valve close to 0% represents at rest position and valve close to 100% repesents wide open throttle.

ED98 The ignition cycle counter value is the number of times the ignition has been cycled to "OFF" since an ECM trouble code was last detected. After 50 ignition cycles without any malfunction being detected, all stored ECM codes are cleared.

ED99 The ECM PROM I.D. is displayed as a number up to three digits long which can be used to verify that the proper PROM is installed in the ECM.