Chrysler 300M 2002 Service Manual page 2444

CAUTION: Before road testing a vehicle, be
sure that all components are reassembled.
During the test drive, do not try to read the
DRBIII screen while in motion. Do not hang
the DRBIII from the rear view mirror or
operate it yourself.
available to operate the DRBIII .
4.3.2 VEHICLE DAMAGE CAUTIONS
Before disconnecting any control module, make
sure the ignition is off. Failure to do so could
damage the module.
When testing voltage or continuity at any control
module, use the terminal side (not the wire end) of
the connector. Do not probe a wire through the
insulation; this will damage it and eventually cause
it to fail because of corrosion.
Be careful when performing electrical tests so as
to prevent accidental shorting of terminals. Such
mistakes can damage fuses or components. Also, a
second DTC could be set, making diagnosis of the
original problem more difficult.
5.0 REQUIRED TOOLS AND
EQUIPMENT
DRBIII (diagnostic read-out box) scan tool
Evaporative System Diagnostic Kit #6917
fuel filler adapter #8382
fuel pressure adapter (C-6631) or #6539
fuel pressure kit (C-4799-B) or #5069
fuel release hose (C-4799-1)
Min Air flow fitting #6714
Pinout Box (Miller #8815)
jumper wires
ohmmeter
oscilloscope
vacuum gauge
voltmeter
12 volt test light minimum 25 ohms resistance
with probe #6801
CAUTION: A 12 volt test light should not be
used for the following circuits, damage to the
powertrain controller will occur.
•
5 Volt Supply
•
8 Volt Supply
• J1850 PCI Bus
• CCD Bus
•
CKP Sensor Signal
• CMP Sensor Signal
• Vehicle Speed Sensor Signal
•
O2 Sensor Signal
Have an assistant
GENERAL INFORMATION
6.0 GLOSSARY OF TERMS
ABS anti-lock brake system
backfire, fuel ignites in either the intake or
popback the exhaust system
CKP crank position sensor
CMP camshaft position sensor
cuts out, a steady pulsation or the inability of
misses the engine to maintain a consistent
rpm
DLC data link connector (previously
called engine diagnostic connector)
detona- a mild to severe ping, especially un-
tion, der loaded engine conditions
spark
knock
ECT engine coolant temperature sensor
EGR exhaust gas recirculation valve and
system
genera- previously called alternator
tor
hard The engine takes longer than usual
start to start, even though it is able to
crank normally.
hesita- There is a momentary lack of re-
tion, sag, sponse when the throttle is opened.
stumble This can occur at all vehicle speeds.
If it is severe enough, the engine
may stall.
IAT intake/inlet air temperature sensor
IAC idle air control motor
JTEC Combined engine and transmission
control module
lack of The engine has less than expected
power, power, with little or no increase in
sluggish vehicle speed when the throttle is
opened.
LDP leak detection pump
MAP manifold absolute pressure sensor
MIL malfunction indicator lamp
MTV manifold tuning valve
NGC next generation controller
O2S oxygen sensor
PCI programmable communication inter-
face
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