Tracker Off-Road 500S - Electronic Control Module (ECM); EFI Diagnostic System

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PK304B
5. Engage the starter switch and observe the multime-
ter. The meter must show battery voltage.
NOTE: If battery voltage is indicated, replace the
starter relay.
Electronic Control Module
(ECM)
The ECM is located beneath the dash and can be
accessed by removing the front right splash panel.
NOTE: The ECM is only serviceable as an assem-
bly.
The ECM is rarely the cause for electrical problems;
however, if the ECM is suspected, substitute another
ECM to verify the suspected one is defective.
This EFI system has a built-in feature that will only allow
an ECM of the same part number to be used in this
model. Do not attempt to substitute an ECM from a dif-
ferent model as the system will not allow it to start.
Error codes can be cleared by following the procedures
located in the EFI Diagnostic System sub-section 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 accelerator pedal to Wide
Open Throttle (WOT).
2. Place the ignition key in the ON position and wait for
10 seconds.
3. Release the accelerator pedal, 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 DTCs 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 moving) or statically (engine/
vehicle stopped).
DIAGNOSTIC MODES
Battery (BATTERY)
WT540
Display: System DC voltage.
DTC: P0562, P0563, P2531, P2532
Usage: Verify system voltage under the 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).