Chrysler PT Cruiser 2001 Service Manual Supplement page 1256

PT
DESCRIPTION AND OPERATION (Continued)
Refer to the following chart that expected shifter
response, depending on ignition key/switch (Fig. 25)
and brake pedal positions.
Fig. 25 Ignition Key/Switch Positions
1 – ACC
2 – LOCK
3 – OFF
4 – ON/RUN
5 – START
OPERATION
The Brake Transmission Shifter/Ignition Interlock
(BTSI) is engaged whenever the ignition switch is in
the LOCK or ACCESSORY position (Fig. 25). An
additional electrically activated feature will prevent
shifting out of the PARK position unless the brake
pedal is depressed at least one-half inch. A magnetic
holding device integral to the interlock cable is ener-
gized when the ignition is in the ON/RUN position.
When the key is in the ON/RUN position and the
brake pedal is depressed, the shifter is unlocked and
will move into any position. The interlock system
also prevents the ignition switch from being turned
to the LOCK or ACCESSORY position, unless the
shifter is in the gated PARK position.
The following chart describes the normal operation
of the Brake Transmission Shift Interlock (BTSI) sys-
tem. If the "expected response" differs from the vehi-
cle's response, then system repair and/or adjustment
is necessary.
DIAGNOSIS AND TESTING
41TE TRANSAXLE GENERAL DIAGNOSIS
NOTE: Before attempting any repair on a 41TE
four-speed automatic transaxle, check for diagnos-
tic trouble codes (DTC's) using the DRB scan tool.
Refer to the Transmission Diagnostic Procedures
Manual.
ACTION
1. Turn key to the "OFF"
position.
2. Turn key to the
ON/RUN" position.
3. Turn key to the
"ON/RUN" position and
depress the brake pedal.
4. Leave shifter in any
gear and try to return key
to the "LOCK" or ACC"
position.
5. Return shifter to
"PARK" and try to remove
the key.
6. With the key removed,
try to shift out of "PARK".
NOTE: Any failure to meet these expected
responses requires system adjustment or repair.
Transaxle malfunctions may be caused by these
general conditions:
• Poor engine performance
• Improper adjustments
• Hydraulic malfunctions
• Mechanical malfunctions
• Electronic malfunctions
Diagnosis of these problems should always begin
by checking the easily accessible variables: fluid level
and condition, gearshift cable adjustment. Then per-
form a road test to determine if the problem has been
corrected or that more diagnosis is necessary. If the
problem persists after the preliminary tests and cor-
rections are completed, hydraulic pressure checks
should be performed.
ROAD TEST
Prior to performing a road test, verify that the
fluid level, fluid condition, and linkage adjustment
have been approved.
During the road test, the transaxle should be oper-
ated in each position to check for slipping and any
variation in shifting.
If the vehicle operates properly at highway speeds,
but has poor acceleration, the converter stator over-
running clutch may be slipping. If acceleration is nor-
mal, but high throttle opening is needed to maintain
highway speeds, the converter stator clutch may
have seized. Both of these stator defects require
replacement of the torque converter and thorough
transaxle cleaning.
TRANSAXLE 21 - 71
EXPECTED RESPONSE
1. Shifter CAN be shifted
out of park.
2. Shifter CANNOT be
shifted out of park.
3. Shifter CAN be shifted
out of park.
4. Key cannot be
returned to the "LOCK" or
"ACC" position.
5. Key can be removed
(after returning to "LOCK"
position).
6. Shifter cannot be
shifted out of "PARK".