Dodge Intrepid Service Manual page 549

21 - 2 TRANSAXLE
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 135
SHIFT INTERLOCK SOLENOID
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 137
SHIFT INTERLOCK SYSTEM
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 138
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 139
DIAGNOSIS AND TESTING - BRAKE/
TRANSMISSION SHIFT INTERLOCK
SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
SHIFT MECHANISM
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 143
SOLENOID/PRESSURE SWITCH ASSY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 143
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 143
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 145
SPEED SENSOR - INPUT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 145
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 145
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 146
SPEED SENSOR - OUTPUT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 146
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 146
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
42LE AUTOMATIC
TRANSAXLE
DESCRIPTION
The 42LE (Fig. 1) is a four-speed transaxle that is
a conventional hydraulic/mechanical assembly with
an integral differential, and is controlled with adap-
tive electronic controls and monitors. The hydraulic
system of the transaxle consists of the transaxle
fluid, fluid passages, hydraulic valves, and various
line pressure control components. An input clutch
assembly which houses the underdrive, overdrive,
and reverse clutches is used. It also utilizes separate
holding clutches: 2nd/4th gear and Low/Reverse. The
primary mechanical components of the transaxle con-
sist of the following:
• Three multiple disc input clutches
• Two multiple disc holding clutches
• Four hydraulic accumulators
• Two planetary gear sets
• Hydraulic oil pump
• Valve body
• Solenoid/Pressure switch assembly
• Integral differential assembly
Control of the transaxle is accomplished by fully
adaptive electronics. Optimum shift scheduling is
accomplished through continuous real-time sensor
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 148
TORQUE CONVERTER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 148
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 148
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 149
TRANSFER SYSTEM
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . 150
ADJUSTMENTS
DRIVE SPROCKET HEIGHT ADJUSTMENT
PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . 151
TRANSMISSION CONTROL RELAY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 152
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 152
TRANSMISSION RANGE SENSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 152
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 152
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 154
VALVE BODY
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . 154
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . 154
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . 158
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 168
feedback information provided to the Powertrain
Control Module (PCM).
The PCM is the heart of the electronic control sys-
tem and relies on information from various direct
and indirect inputs (sensors, switches, etc.) to deter-
mine driver demand and vehicle operating condi-
tions. With this information, the PCM can calculate
and perform timely and quality shifts through vari-
ous output or control devices (solenoid pack, trans-
mission control relay, etc.).
The PCM also performs certain self-diagnostic
functions and provides comprehensive information
(sensor data, DTC's, etc.) which is helpful in proper
diagnosis and repair. This information can be viewed
with the DRB scan tool.
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
LH