AEM 30-6821 Series 2 Plug & Play EMS - Manual (Page 7)

Page 7 of 21
Electronic Throttle Control System Calibration Procedure
The 30-6820 / 30-6821 EMS, as delivered, requires a specific calibration procedure to be performed prior to
use. Before beginning this procedure, please be familiar with the location and function of the CRUISE and
SET/COAST buttons on the Cruise Control Steering Column Stalk as depicted in Figure 2. Also be aware of
the (green) CRUISE and SET indicator lights on the dashboard, Figure 3. This procedure should be
repeated any time any part of the ETC system has been serviced, removed, or replaced.
Note: Do not attempt to start or run the engine during the calibration procedure. The EMS will disable engine
start/running whilst in calibration mode.
Figure 2 - “CRUISE” and “SET/COAST” buttons Figure 3 - “CRUISE” and “SET” indicator lights
1. Initial Calibration Procedure
a. Turn the ignition key to the ON position. The CRUISE and SET indicator lights will begin flashing in
unison at a medium rate.
b. Press and hold the CRUISE button (See Figure 4) for approximately three (3) seconds until the
indicator lights stop flashing.
c. There will be a brief delay after which the CRUISE light will flash once.
d.
Ensure the accelerator pedal is not being depressed and is in the full “UP” position.
e. The SET indicator light will flash rapidly for a few seconds as the EMS calibrates this position.
f.
There will be a brief delay after which the CRUISE light will flash twice.
g. Depress and hold the accelerator pedal to the floor and ensure it is in the full Wide Open
Throttle/“WOT” position.
h. The SET indicator light will flash rapidly for a few seconds as the EMS calibrates this position.
i.
There will be a brief delay after which the CRUISE light will flash three times.
j. The SET indicator light will flash rapidly for several seconds as the EMS calibrates the ETC throttle
body.
k. If the calibration procedure was successful and all the ETC sensors and actuators are found to be
within tolerance then the CRUISE and SET indicator lights will flash in unison at a medium rate.
l. If the calibration procedure fails, indicated by the CRUISE and SET indicator lights flashing in an
alternating pattern, please reference the sections entitled ETC Diagnostics and Calibration
Troubleshooting elsewhere in this document.
m. Turn the ignition key to the OFF position.
n. The ETC system is now calibrated and ready for use.
Figure 4 – Pressing the “CRUISE” button