2000–2005 Honda S2000
5
© 2017 AEM Performance Electronics
DASHBOARD
The AEM Infinity EMS for the 2000–2005 Honda S2000 drives the Tachometer, Coolant Temperature
Gauge, and the CEL (Check Engine Light). Shown below are the AP1 and AP2 gauge clusters.
Rather than OBD2 diagnostics, the CEL light is now dedicated to the AEM “MILOutput” feature. The
AEM MILOutput activates if any 1 of the following inputs are in an error state: air temp, baro pressure,
coolant temp, exhaust back pressure, fuel pressure, UEGO #1, UEGO #2, MAF analog, MAF digital,
MAP, oil pressure, or throttle position. If any of these sensors are not used, they should be turned OFF
in the Wizard to avoid any false readings. To activate the MILOutput feature, go to the Wizard and check
“Enable MIL Output” in Diagnostics.
The coolant temp gauge is ECU
driven by a 5V 30ms pulse with a
period that varies with ECT
voltage, as shown. It is pre-
calibrated using a combination of
the LS6_Freq [Hz] 1-axis table
and the LS6_Duty [%] 2-axis
table.
Similarly, the Honda S2000 gauge
cluster’s tachometer is also driven by
the ECU, as shown. However, compared
to the coolant temperature gauge, this
signal is very elementary as it simply
varies frequency with engine speed.
The Honda S2000 tachometer is pre-
calibrated using a combination of the
LS5_Freq [Hz] 1-axis table and the
LS5_Duty [%] 2-axis table.
To Next Page
Loading...
Need help?
General
