Electronic Control Module (Ecm); Efi Diagnostic System - Arctic Cat 2016 Alterra 500 Service Manual

XR111
5. Depress the starter button and observe the multime-
ter.

NOTE: If battery voltage is indicated, replace the
starter relay. If no voltage is indicated, proceed to
Power Distribution Module (PDM) check in this sec-
tion.
Electronic Control Module
(ECM)
The electronic control module (ECM) is located beneath
the seat near the battery.

NOTE: The ECM is not a serviceable component. If
the unit is defective, it must be replaced.
The ECM is rarely the cause for electrical problems;
however, if the ECM is suspected, substitute another
ECM of the same part number to verify the suspected one
is defective.
Codes can be cleared by following the procedures located
in EFI Diagnostic System in this section.

NOTE: If the throttle body, ECM, TPS, or ISC are
replaced, the EFI system must be synchronized. Use
the following procedure.
1. With the key off, depress throttle lever to Wide Open
Throttle (WOT).
2. Place the ignition key in the ON position and wait for
10 seconds.
3. Release the throttle lever and wait an additional 10
seconds.
4. Turn the key to the OFF position and allow the gauge
to shut off.

EFI Diagnostic System

DIGITAL GAUGE
The digital gauge can be used as a diagnostic tool for
many of the DTC's displayed. To place the gauge into the
diagnostic mode, use the following procedure.
1. Turn the ignition switch ON.
2. Depress and hold both left and right buttons together
for approximately three seconds until "DIAGNOS-
TIC" appears on the LCD.
WT541
3. Press the center button (SELECT) to enter diagnostic
mode; cycle the display by pressing either the left or
right button to step to the desired function.

NOTE: The gauge can be utilized dynamically
(engine running/vehicle
(engine/vehicle stopped).
DIAGNOSTIC MODES
Battery (BATTERY)
WT540
Display: System DC voltage.
DTC: P0562, P0563, P2531, P2532
Usage: Verify system voltage under following condi-
tions.
1. Battery voltage with engine and accessories off
(>12.2 VDC for fully charged).
2. Battery voltage with engine idling (charging = 13.8
VDC or greater).
3. Battery voltage with electrical accessories operating,
engine idling (13.5 VDC or greater).
4. Battery voltage starter cranking (10.5-11.5 VDC).
moving) or statically
133