Chrysler Le Baron, Dodge Dynasty, Plymouth Acclaim. Manual

FAULT CODES—ON BOARD DIAGNOSTICS

INDEX

page

Diagnostic Testing Using Fault Codes

. . . . . . . . . 24

Drb II Diagnostic Tester

. . . . . . . . . . . . . . . . . . . 24

General Description/Information

. . . . . . . . . . . . . . 23

GENERAL DESCRIPTION/INFORMATION

Another way of diagnosing charging system prob-

lems can be accomplished using the On Board Diag-
nostic System Fault Codes.

A Fault Code shows a potential problem in a mon-

itored circuit,

or a condition caused by a faulty component. A

Fault Code can be retrieved by turning the ignition
switch ON-OFF-ON-OFF-ON without starting the
engine, and counting the number of flashes of the
Malfunction Indicator (CHECK ENGINE) Lamp in
the instrument cluster.

EXAMPLES:

• If the Malfunction Indicator (Check Engine) Lamp
flashes four times, pauses, and flashes one more
time, a Code 41 is shown. The first set of four flashes
indicates number four. The second set of one flash in-
dicates one.
• If the Malfunction Indicator (Check Engine) Lamp
flashes four times, pauses, and flashes six more
times, a Code 46 is shown. The first set of four
flashes indicates number four. The second set of six
flashes indicates six.
• If the Malfunction Indication (Check Engine)
Lamp flashes four times, pauses, and flashes seven
more times, a Code 47 is shown. The first set of four
flashes indicates number four. The second set of
seven flashes indicates seven.

POWERTRAIN CONTROL MODULE

The Powertrain Control Module is equipped with

On Board Diagnostic features and monitors all en-
gine control circuits during a run/drive period. If a
circuit or system does not perform properly, the pow-
ertrain control module will file in memory a preset
Fault Code. This can be used to help in diagnosing a
problem. After 50 to 100 ignition switch ON/RUN cy-
cles, the memory will be erased if the fault does not
reoccur.

The Powertrain Control Module is located in the

engine compartment outboard of the battery (Fig. 7).

Refer to Fig. 8 Generator Fault Codes Chart for re-

lationships of generator/charging system Fault Code
numbers.

Fig. 7 Powertrain Control Module

BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS

8A - 23

DIAGNOSTIC TESTING USING FAULT CODES

For diagnostic testing when using the fault codes,

refer to Fig.9 through 13.

DRB II DIAGNOSTIC TESTER

TESTING FAULT CODES

A more accurate device to retrieve fault codes is

Diagnostic Tool (DRB II). This diagnostic tool,
plugged into the diagnostic connector (Fig. 7) located
near the battery, will display fault descriptions. The
DRB II also can test various circuits and component
functions. Refer to the instructions provided with the
(DRB II) tool being used. Descriptions of Fault Codes
for other vehicle systems can be found in the General
Diagnosis sections of Group 14, Fuel System.

Fig. 8 Generator Fault Codes

8A - 24

BATTERY/STARTING/CHARGING SYSTEMS DIAGNOSTICS

Chrysler Le Baron, Dodge Dynasty, Plymouth Acclaim. Manual - part 273