Chrysler Pacifica. Manual - part 10
lowing these procedures is very important to 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.
4.2.3
SERVICING SUB-ASSEMBLIES
Some components of the body system are in-
tended to be serviced as an assembly only. Attempt-
ing to remove or repair certain system sub-
components may result in personal injury and/or
improper system operation. Only those compo-
nents with approved repair and installation proce-
dures in the service manual should be serviced.
4.2.4
DRBIII
T SAFETY INFORMATION
WARNING: EXCEEDING THE LIMITS OF THE
DRBIII
T
MULTIMETER
IS
DANGEROUS.
READ ALL DRBIII
T
INSTRUCTIONS BEFORE
USING
THE
MULTIMETER.
FAILURE
TO
FOLLOW
THESE
INSTRUCTIONS
CAN
RESULT IN PERSONAL INJURY OR DEATH.
•
Follow the vehicle manufacturer’s service speci-
fications at all times.
•
Do not use the DRBIII
t 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 functions for the
measurement. Do not try voltage or current
measurement that may exceed the rated capac-
ity.
•
Do not exceed the limits shown in the table
below:
FUNCTION
INPUT LIMIT
Volts
0 - 500 peak volts AC
Ohms (resistance)*
0 -1.12 megohms
Frequency Measured
Frequency Generated
0 -10 kHz
Temperature
-58 - 1100°F
(-50 - 600°C)
* 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 DC or 500v peak AC.
•
Use caution when measuring voltage above 25v
DC or 25v AC.
•
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
current, make sure the meter is functioning
correctly. 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 disconnect-
ing the common test lead.
•
When using the meter function, keep the DRBI-
II
t away from spark plug or coil wires to avoid
measuring error from outside interference.
4.3
WARNINGS
4.3.1
VEHICLE DAMAGE WARNINGS
Before disconnecting any control module, make
sure the ignition is
9off9. Failure to do so could
damage the module.When testing voltage or conti-
nuity 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 mis-
takes can damage fuses or components. Also, a
second code could be set, making diagnosis of the
original problem more difficult.
4.3.2
ROAD TESTING A COMPLAINT
VEHICLE
Some complaints will require a test drive as part
of the repair verification procedure. The purpose of
the test drive is to try to duplicate the diagnostic
code or symptom condition.
WARNING:
REASSEMBLE
ALL
COMPO-
NENTS BEFORE ROAD TESTING A VEHI-
CLE. DO NOT TRY TO READ THE DRBIII
T
SCREEN OR OTHER TEST EQUIPMENT
DURING A TEST DRIVE. DO NOT HANG THE
DRBIII
T
OR OTHER TEST EQUIPMENT FROM
THE REARVIEW MIRROR DURING A TEST
DRIVE. HAVE AN ASSISTANT AVAILABLE TO
OPERATE THE DRBIII
T
OR OTHER TEST
EQUIPMENT. FAILURE TO FOLLOW THESE
INSTRUCTIONS CAN RESULT IN PERSONAL
INJURY OR DEATH.
37
GENERAL INFORMATION