Chrysler Conquest 1988 Service Manual page 860

14-66
I=
=~-
FUEL (ECI) SYSTEM
- ECI System Components
Lo
ISC motor connector
(Sensor side con-
nectar front view)
EC1742
To spark plug
Connector
MOTOR POSITION SENSOR (MPS)
INSPECTION
N14QLAA
Use the ECI checker for inspection. (Refer to P.14-53.)
NOTE
Inspection of -change on output voltage of MPS can be
Inspected by moving the ISC motor as follows.
(1) Turn the ignition switch~ to "LOCK".
(2) Disconnect -Ihe ISC mator connector.
(3) Turn the ignition switch to "ON". (Do not run the engine.)--
(4) Connect GVD-%(four dry cells) between terminal@ and c@
of the ISC--motor connector to operate the ISC motor
(extendiretract), ,and make sure that the MPS output
voltage changes smooth& between approximately 0.5 and--
5 v.
Caution
Apply only a 6V DC or lower voltage. Application of
higher voltage could cause locking of the servo gears.
ENGINE SPEED SENSOR (IGNITION COIL 0 TER-
MINAL)
N14QCBA
INSPECTION
Check that there is continuity between the ignition coil 0 ~;
terminal and the electronic control unit (ECU) terminal No. 1.
NOTE
Shake the harness connecttito check for lurking open circuit.
OXYGEN SENSOR
INSPECTION
Caution
N14ClDBA
1. Before checking, warm up the engine until engine
coolant temperature reaches 85 to 95°C (185 to 205°F).
2. Use an accurate digital voltmeter.
(1) Disconnect the ~oxvgen sensor connector and connect a
voltmeter to- the oxygen sensor connector.
(2) While repeating engine raYzing, measure the oxygen sensor
output voltage.