LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Infiniti >> 2003 >> M45 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Scan Tool Usage >> Consult-II >> Data Monitor (SPEC) Mode
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Data Monitor (SPEC) Mode

NOTE: Any monitored item that does not match the vehicle being diagnosed is deleted from the display automatically.

For DATA MONITOR (SPEC) mode descriptions, see DATA MONITOR (SPEC) MODE DESCRIPTIONS  table.

DATA MONITOR (SPEC) MODE DESCRIPTIONS

Monitored Item Description
ENG SPEED [RPM] Indicates engine speed computed from crankshaft position sensor (POS) signal.
MAS A/F SE-B1 [V] The signal voltage of the mass air flow sensor specification is displayed. When engine is running, specification range is indicated.
B/FUEL SCHDL [msec] "Base fuel schedule" indicates the fuel injection pulse width programmed into ECM, prior to any learned on board correction. When engine is running, specification range is indicated.
A/F ALPHA-B1 Or B2 [%] The mean value of the air-fuel ratio feedback correction factor per cycle is indicated. When engine is running, specification range is indicated. This data also includes the data for the air-fuel ratio learning control.
scientia non olet · About LEMON Manuals