Chrysler PT Cruiser 2001 Service Manual Supplement page 2766

GENERAL INFORMATION
4.2 SAFETY
4.2.1 TECHNICIAN SAFETY INFORMATION
WARNING: ENGINES PRODUCE CARBON
MONOXIDE THAT IS ODORLESS, CAUSES
SLOWER REACTION TIMES, AND CAN LEAD
TO SERIOUS INJURY. WHEN THE ENGINE IS
OPERATING, KEEP SERVICE AREAS WELL
VENTILATED OR ATTACH THE VEHICLE
EXHAUST SYSTEM TO THE SHOP EXHAUST
REMOVAL SYSTEM.
Some operations in this manual require that
hydraulic tubes, hoses, and fittings, disconnected
for inspection or testing purposes. These systems,
when fully charged contains fluid at high pressure.
Before disconnecting any hydraulic tubes, hoses or
fittings, be sure that the system is fully depressur-
ized.
When servicing a vehicle, always wear eye pro-
tection, and remove any metal jewelry such as
watchbands or bracelets that might make an inad-
vertent electrical contact.
When diagnosing a transmission system problem,
it is important to follow approved procedures where
applicable. Following these procedures is very im-
portant to the safety of individuals performing
diagnostic tests.
4.2.2 VEHICLE PREPARATION FOR
TESTING
Make sure the vehicle being tested has a fully
charged battery. If it does not, false diagnostic codes
or error messages may occur. It is extremely impor-
tant that accurate shift lever position data be avail-
able to the TCM. The accuracy of any diagnostic
trouble code found in memory is doubtful unless the
Shift Lever Test performed on the DRBIII Scan
Tool, passes.
4.2.3 SERVICING SUB-ASSEMBLIES
Some components of the powertrain system are
intended to be serviced in assembly only. Attempt-
ing to remove or repair certain system sub-
components may result in personal injury and/or
improper system operation. Only those components
with approved repair and installation procedures in
the service manual should be serviced.
4.2.4 DRBIII SAFETY INFORMATION
WARNING: EXCEEDING THE LIMITS OF THE
DRBIII MULTIMETER IS DANGEROUS. IT
CAN EXPOSE YOU
POSSIBLY FATAL
READ AND UNDERSTAND THE CAUTIONS
AND THE SPECIFICATION LIMITS.
Follow the vehicle manufacturer's service specifica-
tions at all times.
• Do not use the DRBIII if it has been damaged.
• Do not use the test leads if the insulation is
damaged or if metal is exposed.
• To avoid electrical shock, do not touch the test
leads, tips, or the circuit being tested.
•
Choose the proper range and function for the
measurement. Do not try voltage or current mea-
surements that may exceed the rated capacity.
• Do not exceed the limits shown in the table below:
FUNCTION
Volts
Ohms (resistance)*
Frequency Measured
Frequency Generated
Temperature
* Ohms cannot be measured if voltage is present.
Ohms can be measured only in a non-powered
circuit.
•
Voltage between any terminal and ground must
not exceed 500v peak AC.
• Use caution when measuring voltage above 25v
DC or 25v AC.
•
The circuit being tested must be protected by a
10A fuse or circuit breaker.
• Use the low current shunt to measure circuits up
to 10A. Use the high current clamp to measure
circuits exceeding 10A.
•
When testing for the presence of voltage or cur-
rent, make sure the meter is functioning cor-
rectly. Take a reading of a known voltage or
current before accepting a zero reading.
•
When measuring current, connect the meter in
series with the load.
• Disconnect the live test lead before disconnecting
the common test lead.
•
When using the meter function, keep the
DRBIII away from spark plug or coil wires to
avoid measuring error from outside interference.
18
TO SERIOUS OR
INJURY. CAREFULLY
INPUT LIMIT
0 - 500 peak volts AC
0 - 500 volts DC
0 - 1.12 megohms
0 - 10 kHz
-58 - 1100F
-50 - 600C