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Misfire Data

Engine Speed - Range 0 - 16384 RPM: The VCM computes the Engine Speed from the fuel control reference input. The speed should remain close to the desired idle under the various engines loads with the engine idling.

Desired idle - Range 0 - 3187 RPM: The VCM commands the desired IAC. The VCM compensates for various engine loads in order to maintain the desired idle speed.

Misfire Current Cyl. #1: The scan tool will display the number of current cylinder misfires.

Misfire Current Cyl. #2: The scan tool will display the number of current cylinder misfires.

Misfire Current Cyl. #3: The scan tool will display the number of current cylinder misfires.

Misfire Current Cyl. #4: The scan tool will display the number of current cylinder misfires.

Misfire Current Cyl. #5: The scan tool will display the number of current cylinder misfires.

Misfire Current Cyl. #6: The scan tool will display the number of current cylinder misfires.

Engine Speed - Range 0 - 16384 RPM: The VCM computes the Engine Speed from the fuel control reference input. The speed should remain close to the desired idle under the various engines loads with the engine idling.

Desired Idle - Range 0 - 3187 RPM: The VCM commands the desired IAC. The VCM compensates for various engine loads in order to maintain the desired idle speed.

Misfire History Cyl. #1: The scan tool will display the number of history cylinder misfires.

Misfire History Cyl. #2: The scan tool will display the number of history cylinder misfires.

Misfire History Cyl. #3: The scan tool will display the number of history cylinder misfires.

Misfire History Cyl. #4: The scan tool will display the number of history cylinder misfires.

Misfire History Cyl. #5: The scan tool will display the number of history cylinder misfires.

Misfire History Cyl. #6: The scan tool will display the number of history cylinder misfires.

IAC Position - Range (0 - 255) Counts: The scan tool displays in counts the Idle Air Control (IAC) pintle position commanded from the VCM. The greater the number of counts, the greater the command idle speed (air passages opened) is. The idle air control should respond fairly quickly to changes in the engine load in order to maintain the desired idle RPM.

Desired IAC - Range (0 - 255) Counts: The desired IAC indicates the desired IAC position.

Ignition 1 On - Range (Yes/No): The Ignition 1 On indicates the condition of the ignition input to the VCM.

Rich/Lean Bn 1 - (Rich/Lean): The Rich/Lean Bn 1 indicates the condition of the exhaust gases in bank 1.

Rich/Lean Bn 2 - (Rich/Lean): The Rich/Lean Bn 2 indicates the condition of the exhaust gases in bank 2.

Brake Switch - Range (Open/Closed): The Brake Switch indicates the status of the brake switch.

Decel Fuel Mode - Range (Yes/No): The Decel Fuel Mode indicates if the VCM is in a Decel Fuel Mode.

Power Enrichment - Range (Yes/No): The Power Enrichment indicates if the Power Enrichment mode is active

TR Switch: The Trans. Range indicates the current drive gear.

TCC Forced Off (No/Yes): The scan tool will display the status of the VCM.

TCC Enable - Range (Yes/No): The TCC Enable indicates the status of the TCC enable output.

Vehicle Speed - km/h - Range (0 - 255): The MPH - km/h indicates in MPH and in km/h how fast the drive wheels are turning.

Cruise Mode - Range (yes/No): The Cruise Mode indicates if the driver has requested the cruise control.
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