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NOTE: The throttle body will not go through the
full verification process if the temperature is < 0° C
(< 32° F).
THROTTLE PEDAL
NOTE: Throttle pedal values are visible in the diag-
nostic menu of the gauge.
The throttle body is not serviceable and must be replaced
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 lim-
ited 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
NOTE: When attempting to start the engine, the
injectors will send fuel a limited amount of times if the
engine has not started.
Resistance
NOTE: The following test should be made using
MaxiClips and the Fluke Model 77 Multimeter set to
OHMS scale.
1. Disconnect the fuel injector wiring harness.
2. Test between the two injector terminals. Resistance
must be 11.4-12.6 ohms.
CRANKSHAFT POSITION (CPS)
SENSOR
Resistance
1. Disconnect the crankshaft position sensor that is
located in the driver side rear inner fender next to the
regulator/rectifier (A). Set the meter selector to the
OHMS position.
2. Connect the red tester lead to the gray wire on the
sensor side; then connect the black tester lead to the
black wire on the sensor side.
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3. The meter reading must be approximately 200 ohms.
OXYGEN (O2) SENSOR
The oxygen sensor (O2 sensor) is located in the exhaust
pipe.
NOTE: When testing the resistance of the sensor’s
heater, the engine/exhaust pipe must be at room tem-
perature (65-75° F, 18-24° C) or inaccurate readings
will occur.
1. Remove the cargo box.
2. Disconnect the oxygen sensor that is located on the
driver side portion of the inner fender.
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3. Set the meter selector to the OHMS position
4. On the sensor side of connector, connect the black
(negative) test lead to one white wire pin; then connect
the red (positive) test lead to the other white wire pin.
The reading is typically 15.9 ohms.
NOTE: If the meter does not read as specified,
replace the sensor.
TEMPERATURE/MANIFOLD ABSOLUTE
PRESSURE (TMAP) SENSOR
NOTE: Preliminary checks may be performed on
this component using the diagnostic mode on the LCD
gauge (see Gauge Diagnostic Menu in this section).
1. Disconnect the connector from the sensor located on
top of the intake.
! WARNING
Short drives with 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 < 0° C (< 32° F) conditions.
CAUTION
Always disconnect the battery when performing resis-
tance tests to avoid damaging the multimeter.
Component data can be retrieved using the Diagnostic
Tool. Utilize the Sensor Data screen.
Component data can be retrieved using the Dealer Diag-
nostic Service. Utilize the Sensor Data screen.
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