compensate for a high pressure condition by de-energizing the A/C clutch
or increasing idle speed.
Power Str PSI High (Yes / No)
An indication to the ECM to increase the engine idle speed due to
additional load placed on the engine by the power steering pump.
PROM ID
The PROM is the identification number of the part of the ECM containing
the factory running parameters. If changing the ECM, the PROM ID is
necessary to keep the factory programming for that vehicle.
Proportional O2 Step (Rich / Lean)
This parameter indicates the adaptive fuel corrective direction the
controller is taking. This item should represent the opposite of rich/lean
state parameter.
QDM 1, 2, 3, 4, A, B, C, or D (High / Low)
The quad driver, located in the ECM. This reading confirms that the ECM
command to the quad driver to operate various high current devices has
been carried out. A reading of LOW indicates that the command was sent to
the device. A reading of HIGH indicates that it has not been carried out. It is
used for QDM 1, 2, 3, 4, A, B, C, or D for the various subdivisions of the
quad driver. Refer to the vehicle service manual for testing QDM devices.
Rich Lean Flag (Rich / Lean)
This parameter gives the rich/lean state which is detected by the Oxygen
sensor. When the state is lean fuel is added to the system. When the
state is rich fuel is subtracted from the system.
Rt Rich Lean Flag / Lf Rich Lean Flag (Rich / Lean)
These parameters give the rich/lean state values corresponding to either
the left or right bank of cylinders in multi-bank engine applications (see
Rich Lean Flag).
Second Gear (Engaged / Disengaged)
If the ECM is commanding second gear, the screen should show
ENGAGED. Otherwise, the screen should show DISENGAGED.
Shift Light (On / Off)
The shift light is a dash indicator on some manual transmission vehicles
which illuminates when the driver is supposed to shift (as determined by
the ECM). If the light is being commanded ON the screen will display ON,
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Summary of Contents for EX-SCAN 5000
Page 1: ...USERS MANUAL...
Page 95: ...NOTES Page 95...
Page 96: ...NOTES Page 96...
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