Efi Sensors/Components - Tracker Off-Road 800SX Service Manual

5. The meter must show battery voltage from one side
of the connector terminal ends.
NOTE: Battery voltage will be indicated from only

one side of the fuse holder connector terminal; the
other side will show no voltage.
NOTE: When testing the HI fuse holder, the head-

light OFF/LO/HI switch must be in the HI position;
when testing the LIGHTS fuse holder, the headlight
dimmer switch can be in either the HI or the LO posi-
tion.
 NOTE: If the meter shows no battery voltage, trou-
bleshoot the battery, switches, PDM, or the main wir-
ing harness.
RELAYS
The 4-pin relays are identical plug-in type located on the
power distribution module. Relay function can be
checked by switching relay positions. The 4-pin relays
are interchangeable.

EFI Sensors/Components

THROTTLE BODY
Component data can be retrieved using the Dealer Diag-
nostic Service. Utilize the Sensor Data screen.
NOTE: Throttle position sensor values are visible in

the diagnostic menu of the gauge.
NOTE: A multimeter cannot be used to diagnose the

throttle body.
NOTE: The throttle body is only serviceable as an

assembly.
There are two throttle position sensors for the throttle
body. If one sensor fails, the vehicle will have a code(s)
that will appear and the engine will be RPM limited until
the issue is fixed.
There is no learn mode that is specific to throttle body
replacement. When the key is switched to the ON posi-
tion, the throttle body will quickly verify proper move-
ment. If the key is switched on and left on for 15 seconds
or more without starting the engine, the throttle body will
go through a full verification process that will be com-
pleted once the throttle body stops making noise.
 NOTE: If there are any types of idle or run quality
issues, allow the throttle body to go through the full
verification process by leaving the key switched on
and left for a minimum of 15 seconds without starting
the engine. The full verification process is completed
when the throttle body stops making noise.
NOTE: The throttle body will not go through the

full verification process if the temperature is below
32° F (0° C).
! WARNING
Short tripping this vehicle in freezing temperatures or
rapid hot/freezing cycles may allow ice to form in the
throttle body that can cause run issues. This possibility
can be greatly reduced if the engine is allowed to
always come to full running temperature when used in
below freezing (32° F or 0° C) conditions.
THROTTLE PEDAL
NOTE: Throttle pedal values are visible in the diag-

nostic menu of the gauge.
 NOTE: The throttle body is only serviceable as an
assembly.
There are two throttle sensors for the throttle pedal. If
one sensor fails, the vehicle will have a code(s) that will
appear and the engine will be RPM limited until the issue
is fixed.
The pedal can come apart, but will not go back together.
There is no learn mode for throttle pedal replacement.
The throttle pedal sends a 0-100% signal to the ECM.
FUEL INJECTORS
Component data can be retrieved using the Dealer Diag-
nostic Service. Utilize the Sensor Data screen.
Voltage
1. Remove the connector from the fuel injector. Set the
meter selector to the DC Voltage position.
2. Place the red meter lead to the orange wire and black
meter lead to ground.
3. With the ignition switch in the ON position, the
meter must read battery voltage.
NOTE: If voltage is not present, troubleshoot the

battery, connector pins, wiring harness, fuses, or
relay.
Resistance
1. With the connector still removed from the injector,
set the meter selector to the OHMS position
2. Connect the red tester lead to either terminal on the
injector; then connect the black tester lead to the
other terminal on the injector.
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