Data Parameters

Typical ECM Data Values:

PCM DATA DISPLAYS:

While in this mode, the display will show 26.0 data messages and the data value of each. This information will assist in tracking down emission or driveability problems, since the displays can be viewed while the vehicle is being driven. Data displays are operated as follows:

1. Pressing the "LEVL" softkey on the CRT will stop the test selection process and return the display to the next available test type for the selected system.
2. Pressing the "NO" softkey on the CRT will display the next smaller test number for the selected test type. If this pad is touched with the lowest test number displayed, the highest test number will then appear.
3. Pressing the "YES" softkey on the CRT will display the next larger test number for the selected test type. If this pad is touched with the highest test number displayed, the lowest test number will then appear.

ED01 The throttle position sensor "TPS" is displayed in percent from 0 to 100.

ED04 The coolant temperature "COOLANT TP" is displayed in degrees (°C) from -40 to 151.

ED06 The injector pulse width "MS INJ PW" is displayed in milliseconds (mS), from 0 to 100.2.

ED07 The oxygen sensor voltage "OXY SENSOR" is displayed in volts from 0 to 1.14 V.

ED08 The spark advance value "DEG SPARK" is displayed in degrees, from 0 to 70, similar to engine timing in degrees.

ED10 The battery voltage "BATT VOLTS" is read in volts, from 0 to 25.5.

ED11 The engine speed "RPM" is displayed from 0 to 6375.

ED12 The vehicle speed "MPH" is displayed in miles per hour from 0 to 159.

ED16 The knock retard "SPARK ANGLE" is displayed in degrees of timing pulled out, from 0 to 45.

ED17 The knock sensor activity is displayed as counts. This counter changes whenever the ESC line is "LO," which indicates sensor activity (detonation).

ED18 The oxygen sensor cross counts "CROSS CTS" is displayed as the number of times the sensor crossed a reference voltage each second.

ED19 The fuel integrator "INT FUEL" is displayed in counts, from 0 to 255.

ED20 The block learn multiplier "BLM FUEL" is displayed in counts, from 0 to 255.

ED21 The mass "AIR FLOW" is displayed in grams per second of air flow from 0 to 255.

ED22 The idle air control "IAC MOTOR" is displayed in steps of travel from 0 to 255.

ED23 The manifold air temperature "MAT" also called air temperature sensor is displayed in degrees (°C) from -40 to 152.

ED24 The command rpm for idle speed control (IDLE RPM) is displayed in rpm from 500 to 2000.

ED25 The canister purge delay (PURGE DELY) is displayed in percent from 0 to 100.

ED26 The air fuel ratio (AIR FUEL) is displayed in percent from 6 to 18.

ED27 The weak cylinder (WEAK CYLND) displays the cylinder number of the weak cylinder.

ED28 The cruise servo position (C/C SERVO) is displayed in percent from 0 to 100.

ED29 The cruise set speed (C/C SPEED) is displayed in kPh from 20 to 120.

ED30 The [1][2]torque converter clutch (TORQUE CNV) is displayed in percent duty cycle from 0 to 100. 0 means the TCC is not locked.

ED31 The PRNDL (PRND321) is displayed in a four digit binary number.

P = 0110
R = 0011
N = 1010
D = 1001
D = 0000
2 = 0101
1 = 1100

ED98 The ignition cycle counter value "IGN CYCLES" is the number of times the ignition has been cycled to "OFF" since an PCM trouble code was last detected. After 50.0 ignition cycles without any malfunction being detected, all stored PCM codes are cleared.

ED99 The "PROM ID" is displayed as a number up to four digits long which can be used to identify the MEM-CAL installed in the PCM.