Chrysler Stratus LHD 1997, Интерактивное электронное руководство по эксплуатации

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minals 87 and 30. The ohmmeter should not show
continuity between relay terminals 87A and 30.
(8) Disconnect jumper wires.
(9) Replace the relay if it did not pass the continu-
ity and resistance tests. If the relay passed the tests,
it operates properly. Check the remainder of the ASD
and fuel pump relay circuits. Refer to group 8W, Wir-
ing Diagrams.
CAMSHAFT AND CRANKSHAFT POSITION SENSOR
Refer to Group 8D, Ignition for Diagnosis and Test-
ing of Camshaft and Crankshaft Sensors.
ENGINE COOLANT TEMPERATURE SENSOR
To perform a complete test of this sensor and its
circuitry, refer to DRB scan tool and appropriate
Powertrain Diagnostics Procedures manual. To test
the sensor only, refer to the following:
(1) With the key off, disconnect wire harness con-
nector from coolant temperature sensor.
(2) Connect one lead of a high input impedance
(digital) volt- ohmmeter to one terminal of sensor.
(3) Connect the other ohmmeter lead to remaining
terminal of sensor. The ohmmeter should read as fol-
lows:
•
Engine/Sensor at normal operating temperature
around 200°F should read approximately 700 to
1,000 ohms.
•
Engine/Sensor at room temperature around 70°F
ohmmeter should read approximately 7,000 to 13,000
ohms.
(4) Test the resistance of the wire harness between
the PCM connector terminal 26 and the sensor har-
ness connector. Also check for continuity between
connector terminal 43 and the sensor harness con-
nector. Refer to Group 8W, Wiring diagrams for cir-
cuit information. If the resistance is greater than 1
ohm, repair the wire harness as necessary.
HEATED OXYGEN SENSOR
Use an ohmmeter to test the heating element of
the oxygen sensors. Disconnect the electrical connec-
tor from each oxygen sensor. The white wires in the
sensor connector are the power and ground circuits
for the heater. Connect the ohmmeter test leads to
terminals of the white wires in the heated oxygen
sensor connector. Replace the heated oxygen sensor if
the resistance is not between 4 and 7 ohms.
IDLE AIR CONTROL (IAC) MOTOR TEST
To preform a complete test of IAC motor and its
circuitry, refer to DRB scan tool and the appropriate
Powertrain Diagnostics Procedures manual.
KNOCK SENSOR
The knock sensor can be tested with a digital volt-
meter. Sensor output should be between 80 mV and 4
volts with the engine running between 576 and 2208
rpm. If the output falls outside of this range a DTC
will be set.
MANIFOLD ABSOLUTE PRESSURE SENSOR
To perform a complete test of the MAP sensor and
its circuitry, refer to the DRB scan tool and appropri-
ate Powertrain Diagnostics Procedures manual. To
test the MAP sensor only, refer to the following:
(1) Test the MAP sensor output voltage at the
MAP sensor connector between terminals 1 and 3
(Fig. 33). With the ignition switch ON and the engine
not running, output voltage should be 4 to 5 volts.
The voltage should drop to 1.5 to 2.1 volts with a hot,
neutral idle speed condition. If OK, go to next step. If
not OK, go to step 3.
(2) Test PCM terminal 29 for the same voltage
described in the previous step to verify wire harness
condition. Repair as required.
(3) Test the MAP sensor ground circuit at sensor
connector terminal 1 and PCM terminal 51. If OK, go
to next step. If not OK, repair as required.
(4) Test MAP sensor supply voltage between sen-
sor connector terminals 2 and 1 with the key ON.
The voltage should be approximately 5 volts (
6
.5V).
Five volts (
6
.5V) should also be at terminal 43 of the
PCM. If OK, replace MAP sensor. If not OK, repair or
replace the wire harness as required.
THROTTLE POSITION SENSOR
To perform a complete test of the this sensor and
its circuitry, refer to the DRB scan tool and appropri-
ate Powertrain Diagnostics Procedures manual. To
test the throttle position sensor only, refer to the fol-
lowing:
Fig. 66 MAP Sensor Connector
TER- MINAL 3 TER- MINAL 2 TER- MINAL 1
JA
FUEL SYSTEM 14 - 49
DIAGNOSIS AND TESTING (Continued)