Chrysler Le Baron, Dodge Dynasty, Plymouth Acclaim. Manual - part 47
Wastegate Duty Cycle
Battery Temperature
Map Sensor Voltage
Vehicle Speed
Oxygen Sensor State
Baro Read Update
MAP Gauge Reading
Throttle Opening (percentage)
Total Spark Advance
CIRCUIT ACTUATION TEST MODE
The purpose of the circuit actuation test mode is to
check for the proper operation of output circuits or
devices which the powertrain control module (PCM)
cannot internally recognize. The PCM can attempt to
activate these outputs and allow an observer to ver-
ify proper operation. Most of the tests available in
this mode provide an audible or visual indication of
device operation (click of relay contacts, spray fuel,
etc.). With the exception of an intermittent condition,
if a device functions properly during its test, assume
the device, its associated wiring, and its driver cir-
cuit are in working order.
OBTAINING CIRCUIT ACTUATION TEST
Connect the DRBII scan tool to the vehicle and ac-
cess the Actuators screen. The following is a list of
the
engine
control
system
functions
accessible
through Actuators screens.
Stop All Tests
Ignition Coil #1
Ignition Coil #2
Fuel Injector #1
Fuel Injector #2
Fuel Injector #3
Idle Air Control Motor Open/Close
Radiator Fan Relay
A/C Clutch Relay
Auto Shutdown Relay
Purge Solenoid
S/C Serv Solenoids
Generator Field
Tachometer Output
Wastegate Solenoid
Baro Read Solenoid
All Solenoids/Relays
Speed Control Vent Solenoid
Speed Control Vacuum Solenoid
ASD Fuel System Test
Fuel Injector #4
THROTTLE BODY MINIMUM AIR FLOW CHECK
PROCEDURE
(1) Warm the engine in neutral until the cooling
fan has cycled on and off at least once.
(2) Shut off engine.
(3) Hook-up Tachometer.
(4) Disconnect the PCV valve hose from the nipple
on the intake manifold.
(5) Attach air metering fitting, special tool 6457
(0.125 inch orifice), to the intake manifold PCV nip-
ple.
(6) Disconnect 3/16 inch manifold vacuum purge
line from the top of the throttle body. Cap the 3/16
inch throttle body nipple.
(7) Connect DRBII scan tool.
(8) Restart engine. Allow engine to idle for at least
one minute.
(9) Using the DRBII scan tool, access Min. Airflow
Idle Spd. The following will then occur:
• Idle air control motor will fully close.
• Idle spark advance will become fixed.
• Engine RPM will be displayed on the DRBII scan
tool.
(10) Check idle RPM with tachometer, if idle RPM
is within the below specification then the throttle
body minimum airflow is set correctly.
If the idle RPM is not within specification, replace
the throttle body.
(11) Shut off engine.
(12) Remove air metering fitting 6457 from the in-
take manifold PCV nipple. Connect the PCV hose to
the nipple.
(13) Remove DRBII scan tool.
(14) Disconnect tachometer.
(15) Reconnect purge line to throttle body.
IGNITION TIMING PROCEDURE
Ignition timing cannot be changed or set on the
Turbo III engine. Refer to Group 8D for a description
of the Direct Ignition System (DIS).
60-WAY PCM WIRING CONNECTOR
Refer to the PCM wiring connector diagram (Fig.
2) for information regarding wire colors and cavity
numbers.
IDLE SPECIFICATIONS
Ä
FUEL SYSTEMS
14 - 105