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FUEL SYSTEM / FUEL INJECTION
4.14
CRANKSHAFT POSITION SENSOR TEST
The crankshaft position sensor is a sealed,
non--serviceable assembly. If fault code diagnosis
indicates a problem within this area, test and correct
as follows:
1. Disconnect main harness connector from ECU.
2. Connect an ohmmeter between the pin terminals.
A resistance value of 560 Ω±10% at room
temperature (20_ C, 68_F) should be obtained. If
resistance is correct, check the mounting, airgap,
toothed ring gear (damage, runout, etc.), and
flywheel key.
3. Disconnect speed sensor connector from wiring
harness. (the connector with one heavy black
lead) Viewing the connector with dual aligning
rails on top, test resistance between the
terminals. A reading of 560 Ω±10% should again
be obtained.
NOTE: If the resistance is incorrect, remove the
screw securing the sensor to the mounting bracket
and replace the sensor. If the resistance in step 2 was
incorrect, but the resistance of the sensor alone was
correct, test the main harness circuit between the
sensor connector terminals and the correspondingpin
terminals in the main connector. Correct any
observed problem, reconnect the sensor, andperform
step 2 again.
CRANKSHAFT POSITION SENSOR
REPLACEMENT
1. Disconnect sensor harness connector.
2. Using a 6mm hex wrench, remove the retaining
bolt and replace the sensor, using a light coating
of oil on the o--ring to aid installation.
3. Torque the retaining bolt to 25 in. lbs. (2.8 Nm)
TEMPERATURE and
BAROMETRIC
AIR
PRESSURE SENSOR
(T--BAP)
Mounted on the throttle body intake, the temperature
and barometric air pressure sensor (T--BAP)
performs two functions in one unit.
Air passing through the intake is measured by the
T--BAP and relayed to the ECU. These signals,
comprised of separate air temperature and
barometric air pressure readings, are processed by
the ECU and compared to it’s programming for
determining the fuel and ignition requirements during
operation.
TEMPERATURE AND BAROMETRIC AIR
PRESSURE SENSOR TEST
The temperature and barometric air pressure sensor
(T--BAP) is a non--serviceable item. If it is faulty, it must
be replaced. This sensor requires a 5 Vdc input t
o
operate, therefore the T--BAP sensor should only b
e
tested using the Polaris Diagnostic Software (deale
r
only). Refer to the EFI Diagnostic Software Manual fo
r
more information
.
TEMPERATURE AND BAROMETRIC AIR
PRESSURE SENSOR REPLACEMENT
1. Disconnect sensor from engine harness.
2. Using a 10mm wrench, remove the retaining bolt
and replace the sensor, using a light coating of oil
on the o--ring to aid installation.
3. Torque the retaining bolt to 29 in. lbs. (3.3 Nm)