Table of Contents
Advertisement
8C - 6
CHARGING SYSTEM
DIAGNOSIS AND TESTING (Continued)
" a description of the DTC can be read using the
DRB scan tool
Refer to the following Charging System Diagnostic
Trouble Code Descriptions chart for DTC's which
apply to the charging system . Refer to the Power-
train Diagnostic Procedures manual and DRB scan
tool to diagnose an on-board diagnostic system trou-
ble code .
OBTAINING DIAGNOSTIC TROUBLE CODES
USING ORB SCAN TOOL
WARNING:
APPLY PARKING
BRAKE AND/OR
BLOCK WHEELS BEFORE PERFORMING ANY TEST
ON AN OPERATING ENGINE .
(1)
Connect the DRB scan tool to the 16-way data
link (diagnostic) connector. This connector is located
in the passenger compartment, below and to the left
of steering column.
(2) Turn the ignition switch on, access Read Fault
Screen . Record all the DTC's shown on the DRB scan
tool.
Observe the malfunction indicator (check
engine) lamp on the instrument panel. The lamp
should light for 2 seconds then go out (bulb check) .
(3) To erase DTC's, use the Erase Trouble Code
data screen on the DRB scan tool .
USING THE MALFUNCTION INDICATOR LAMP (MIL)
(1)
Cycle the ignition key On - Off - On - Off - On
within 5 seconds.
TJ
(2) Count the number of times the MIL (check
engine lamp) on the instrument panel flashes on and
off. The number of flashes represents the trouble
code. There is a slight pause between the flashes rep-
resenting the first and second digits of the code .
Longer pauses separate individual two digit trouble
codes.
An example of a flashed DTC is as follows:
(3) Lamp flashes 4 times, pauses, and then flashes
6 more times. This indicates a DTC code number 46.
(4) Lamp flashes 5 times, pauses, and flashes 5
more times. This indicates a DTC code number 55 . A
DTC 55 will always be the last code to be displayed.
This indicates the end of all stored codes .
(5) To erase DTC's, use the Erase Trouble Code
data screen on the DRB scan tool.
USING THE VEHICLE ODOMETER
(1)
Cycle the ignition key On - Off - On - Off - On
within 5 seconds.
(2) Read the actual DTC number displayed on the
vehicle odometer. Each number will be displayed
with a slight delay between numbers.
(3) A DTC 55 will always be the last code to be
displayed. This indicates the end of all stored codes.
(4) To erase DTC's, use the Erase Trouble Code
data screen on the DRB scan tool.
* Check Engine Lamp (MIL) will not illuminate
during engine operation if this Diagnostic Trouble
Code was recorded . Cycle Ignition key as described in
manual and observe code flashed by Check Engine
lamp .
CHARGING SYSTEM DIAGNOSTIC TROUBLE CODE DESCRIPTIONS
MIL
Code
44**
44**
46***
47***
55*
Generic
Scan
Hex
Tool
ode
Code
P1493
P1492
DRB Scan Tool Display
OB
99
9A
06
05
Battery Disconnect
Generator Field Not Switching
Properly
Battery Temp Sns Low
Battery Temp Sns High
Charging System Voltage Too High
Charging System Voltage Too Low
Description of Diagnostic Trouble Code
Direct battery input to PCM was disconnected
within the last 50 Key-on cycles.
An open or shorted condition detected in the
generator field control circuit .
Battery temp. sensor has shorted to ground (-)
Battery temp. sensor has shorted to (+)
Battery voltage sense input above target
charging voltage during engine operation .
Battery voltage sense input below target
charging during engine operation . Also, no
significant change detected in battery voltage
during active test of generator output circuit .
Completion of fault code display on Check
Engine lamp.
Advertisement
Table of Contents
Troubleshooting
