Operation; Diagnosis And Testing - Chrysler 2004 Concorde Service Manual

21 - 4 TRANSAXLE
42LE AUTOMATIC TRANSAXLE (Continued)
TRANSAXLE IDENTIFICATION
The 42LE transaxle identification code is a series
of digits printed on a bar-code label that is fixed to
the transaxle case as shown in (Fig. 2).
For example, the identification code K 821 1125
1316 can be broken down as follows:
• K = Kokomo Transmission Plant
• 821 = Last three digits of the transaxle part
number
• 1125 = Build date
• 1316 = Build sequence number
Fig. 2 Transaxle Identification Label
1 - INPUT SPEED SENSOR
2 - OUTPUT SPEED SENSOR
3 - IDENTIFICATION TAG
Depending on date of manufacture, some transax-
les will utilize a new identification label located in
the same location as shown in (Fig. 2). This label can
be broken down as follows (Fig. 3):
If the tag is not legible or missing, the "PK" num-
ber, which is stamped into the transaxle case, can be
referred to for identification. This number differs
slightly in that it contains the entire transaxle part
number, rather than the last three digits.

OPERATION

Transmission output is directed to an integral dif-
ferential by a transfer gear system in the following
input-to-output ratios:
First
Second
Third
Overdrive
Reverse
1 - T=TRACEABILITY
2 - SUPPLIER CODE (PK=KOKOMO)
3 - COMPONENT CODE (TK=KOKOMO TRANSMISSION)
4 - BUILD DAY (344=DEC. 9)
5 - BUILD YEAR (9=1999)
6 - LINE/SHIFT CODE (3=3RD SHIFT)
7 - BUILD SEQUENCE NUMBER
8 - LAST THREE OF P/N
9 - ALPHA
10 - TRANSAXLE PART NUMBER
11 - P=PART NUMBER

DIAGNOSIS AND TESTING

DIAGNOSIS AND TESTING - 42LE GENERAL
DIAGNOSIS
CAUTION: Before attempting any repair on the 42LE
Four Speed Automatic Transaxle, always check for
proper shift linkage adjustment. Also check for
diagnostic trouble codes with the DRB scan tool
and the 42LE Transaxle Diagnostic Procedure Man-
ual.
caused by these general conditions:
2.84 : 1
1.57 : 1
1.00 : 1
0.69 : 1
2.21 : 1
recording the complaint. The complaint should be
defined as specific as possible. Include the following
checks:
Fig. 3 Identification Label Breakdown
42LE automatic transaxle malfunctions may be
• Poor engine performance
• Improper adjustments
• Hydraulic malfunctions
• Mechanical malfunctions
• Electronic malfunctions
When diagnosing a problem always begin with
• Temperature at occurrence (cold, hot, both)
LH