163
PR859
NOTE: For this test, the meter must be in OHMS
position.
3. On the sensor side of connector, connect the black (nega-
tive) test lead to one white wire pin; then connect the red
(positive) test lead to the other white wire pin. Readings
should be between 6.7 and 10.1 ohms.
NOTE: If the meter does not read as specified,
replace the sensor.
MANIFOLD ABSOLUTE PRESSURE
(MAP) SENSOR (550/1000)
1. Disconnect the MAP connector from the pressure
sensor located on the throttle body.
2. Select DC Voltage on the tester and turn the ignition
switch to the ON position.
3. Connect the black tester lead to the black/green wire
and the red tester lead to the orange/blue wire. The
meter should read 4.5-5.5 DC volts. If the meter does
not read as specified, check the ECM connector or
wiring.
4. Connect the MAP to the harness; then using Maxi-
Clips, connect the red tester lead to the brown/white
wire and the black tester lead to the black/green wire.
With the engine running at idle speed, the meter
should read approximately 1.5 DC volts.
NOTE: If the meter does not read as specified,
replace the sensor.
MANIFOLD ABSOLUTE PRESSURE/
INLET AIR TEMPERATURE (MAP/IAT)
SENSOR (700)
NOTE: Preliminary checks may be performed on this
component using the diagnostic mode on the LCD gauge
(see EFI Diagnostic System (XTX) in this section).
1. Disconnect the MAP/IAT connector from the sensor
located on top of the throttle body.
2. Select DC Voltage on the tester and turn the ignition
switch to the ON position.
3. Connect the black tester lead to the black/pink wire and
the red tester lead to the orange/blue wire. The meter
should read 4.5-5.5 DC volts. If the meter does not
read as specified, check the ECM connector or wiring.
4. Connect the MAP/IAT to the harness; then using
MaxiClips, connect the red tester lead to the
brown/white wire and the black tester lead to the
black/pink wire. With the engine running at idle
speed, the meter should read approximately 2.5 DC
volts (MAP sensor signal).
5. Connect the red tester lead to the green/red wire.
With the engine at idle and at room temperature
(approximately 60° F), the meter should read
approximately 2.9 DC volts.
NOTE: If the meter does not read as specified,
replace the sensor.
Speed Sensor
TESTING
NOTE: Prior to testing the speed sensor, inspect the
three-wire connector on the speed sensor for con-
tamination, broken pins, and/or corrosion.
1. Set the meter selector to the DC Voltage position.
2. With appropriate needle adapters on the meter leads,
connect the red tester lead to the voltage lead (V); then
connect the black tester lead to the ground lead (G).
PR279A
3. Turn the ignition switch to the ON position.
4. The meter must show approximately 6 DC volts.
5. Leave the black tester lead connected; then connect the
red tester lead to the signal lead pin (S).
6. Slowly move the vehicle forward or backward; the meter
must show 0 and approximately 6 DC volts alternately.
NOTE: If the sensor tests are within specifications, the
LCD gauge must be replaced.
REPLACING (XT/XTX)
1. Disconnect the three-wire connector from the speed sen-
sor harness or from the speed sensor; then remove the
Allen-head cap screw securing the sensor to the sensor
housing.
2. Remove the sensor from the sensor housing accounting
for an O-ring.
Содержание PROWLER XT 2014
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