Chrysler 300M, Dodge Interpid. Manual — part 329
(6) Remove the 2 screws attaching the lower
shroud to the steering column (Fig. 364). Remove the
lower shroud from the steering column.
(7) Disconnect the wiring harness connector from
the brake transmission shift interlock (BTSI) sole-
noid (Fig. 365).
(8) Remove the retainer clip from the end of the
BTSI solenoid (Fig. 366).
(9) Slide the BTSI solenoid straight off the shift
lever mounting stud.
INSTALLATION
(1) Align the flat inside the brake transmission
shift interlock (BTSI) solenoid (Fig. 367) with the flat
on the shift lever mounting stud.
Fig. 364 Lower Shroud Attaching Screws
1 - LOWER SHROUD
2 - MOUNTING SCREWS
Fig. 365 Solenoid Connector
1 - BTSI SOLENOID
2 - CONNECTOR
Fig. 366 Solenoid Retainer Clip
1 - SOLENOID
2 - MOUNTING STUD
3 - RETAINER CLIP
Fig. 367 Flat Inside BTSI Solenoid
1 - GUIDES
2 - SOLENOID
3 - FLAT
LH
TRANSAXLE
21 - 135
SHIFT INTERLOCK SOLENOID (Continued)
(2) Slide the solenoid completely onto the shift
lever mounting stud aligning the plastic guide
formed into the solenoid housing with the flange on
the shift lever mechanism bracket (Fig. 368).
(3) Install the retainer clip until it snaps into
place in the slot cut into the shift lever mounting
stud (Fig. 369).
(4) Verify the BTSI solenoid is locked in place and
will not slide off the mounting stud.
(5) Connect the wiring harness connector to the
BTSI solenoid.
(6) Verify the BTSI is operating properly. With the
ignition on (engine not running) and the parking
brake applied, try shifting the transmission shift
lever out of the PARK position with and without the
brake pedal being applied. The shift lever should
only shift out of PARK with the brake pedal being
depressed.
(7) Install the lower shroud (Fig. 364) on the steer-
ing column. Install and securely tighten the 2 screws
attaching the lower shroud to the steering column.
(8) Install the tilt lever (Fig. 363) on the steering
column.
(9) Install the upper shroud on the steering col-
umn by snapping it onto the lower shroud.
(10) Install the lower instrument panel cover.
(11) Install the two screws behind the fuse panel
cover attaching the lower instrument panel cover to
the instrument panel (Fig. 362).
(12) Install the fuse panel cover on the left end of
the instrument panel (Fig. 361).
SHIFT INTERLOCK SYSTEM
DESCRIPTION
FLOOR
The Brake Transmission Shifter/Ignition Interlock
(BTSI) is a cable and solenoid operated system that
prevents the transmission gear shifter from being
moved out of PARK without a driver in place.
Refer to the following chart that expected shifter
response, depending on ignition key/switch (Fig. 370)
and brake pedal positions.
Fig. 368 Guide And Flange Alignment
1 - BRACKET FLANGE
2 - GUIDE
Fig. 369 Solenoid Retainer Clip Installation
1 - SOLENOID
2 - MOUNTING STUD
3 - RETAINER CLIP
Fig. 370 Ignition Key/Switch Positions
1 - ACC
2 - LOCK
3 - OFF
4 - ON/RUN
5 - START
21 - 136
TRANSAXLE
LH
SHIFT INTERLOCK SOLENOID (Continued)
COLUMN
Vehicles equipped with a column shifter utilize a
brake transmission shift interlock (BTSI) solenoid,
which prevents the transmission gear shifter from
being moved out of PARK without a driver in place
(Fig. 371).
OPERATION
The Brake Transmission Shifter/Ignition Interlock
(BTSI) is engaged whenever the ignition switch is in
the LOCK or ACCESSORY position (Fig. 372). 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.
ACTION
EXPECTED RESPONSE
1. Turn key to the
9
OFF
9
position.
1. Shifter CAN be shifted
out of park.
2. Turn key to the
9
ON/RUN
9
position.
2. Shifter CANNOT be
shifted out of park.
3. Turn key to the
9
ON/RUN
9
position and
depress the brake pedal.
3. Shifter CAN be shifted
out of park.
4. Leave shifter in any
gear and try to return key
to the
9
LOCK
9
or
9
ACC
9
position.
4. Key cannot be
returned to the
9
LOCK
9
or
9
ACC
9
position.
5. Return shifter to
9
PARK
9
and try to remove
the key.
5. Key can be removed
(after returning to
9
LOCK
9
position).
6. With the key removed,
try to shift out of
9
PARK
9
.
6. Shifter cannot be
shifted out of
9
PARK
9
.
NOTE: Any failure to meet these expected
responses requires system adjustment or repair.
Fig. 371 BTSI
1 - SHIFT LEVER BRACKET
2 - SOLENOID
3 - KEY CYLINDER
Fig. 372 Ignition Key/Switch Positions
1 - ACC
2 - LOCK
3 - OFF
4 - ON/RUN
5 - START
LH
TRANSAXLE
21 - 137
SHIFT INTERLOCK SYSTEM (Continued)
DIAGNOSIS AND TESTING - BRAKE/
TRANSMISSION SHIFT INTERLOCK SYSTEM
FLOOR SHIFT MODELS
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.
Refer to the following chart that expected shifter
response, depending on ignition key/switch (Fig. 373)
and brake pedal positions.
ACTION
EXPECTED RESPONSE
1. Turn key to the
9
OFF
9
position.
1. Shifter CAN be shifted
out of park.
2. Turn key to the
9
ON/RUN
9
position.
2. Shifter CANNOT be
shifted out of park.
3. Turn key to the
9
ON/RUN
9
position and
depress the brake pedal.
3. Shifter CAN be shifted
out of park.
4. Leave shifter in any
gear and try to return key
to the
9
LOCK
9
or
9
ACC
9
position.
4. Key cannot be
returned to the
9
LOCK
9
or
9
ACC
9
position.
5. Return shifter to
9
PARK
9
and try to remove
the key.
5. Key can be removed
(after returning to
9
LOCK
9
position).
6. With the key removed,
try to shift out of
9
PARK
9
.
6. Shifter cannot be
shifted out of
9
PARK
9
.
NOTE: Any failure to meet these expected
responses requires system adjustment or repair.
If the floor shifter cannot be moved out of the PARK
position, refer to Shifter Locked In Place below. If the
shift lever can be shifted out of PARK without the brake
pedal depressed, refer to Circuit Test below.
SHIFTER LOCKED IN PLACE
(1) Remove the instrument panel cover below the
steering column, then remove the steering column
shrouds to gain access to the brake transmission
shift interlock (BTSI) solenoid. The solenoid is part of
the interlock cable assembly.
(2) Disconnect the wire connector from the rear of
the BTSI solenoid.
(3) Insert the ignition key and turn it to the ON
position.
(4) With the brakes applied, try moving the shifter
out of the PARK position.
• If the lever now moves freely in and out of
PARK, perform the Circuit Test below.
• If the shift lever still does not move from the
PARK position, remove the BTSI solenoid from the
shift lever assembly.
If the shift lever now moves freely in and out of the
park position, the BTSI solenoid is faulty and the inter-
lock cable must be replaced. If the shift lever still does
not move from the park position, the problem is in the
shift lever assembly or the ignition interlock cassette.
CIRCUIT TEST
(1) Check the system fuse in the junction block
(An open or blown fuse would allow the shift lever to
be moved in and out of the PARK position without
the brake pedal applied).
(2) Remove the instrument panel cover below the
steering column, then remove the steering column
shrouds to gain access to the brake transmission
shift interlock (BTSI) solenoid.
(3) Disconnect the wire connector from the rear of
the BTSI solenoid.
(4) Insert the ignition key and turn it to the ON
position.
(5) Back-probe the wire connector’s terminal num-
ber 2 with a test light. The test light should illumi-
nate. If not, there is an open or short in the ignition
feed circuit leading to the BTSI solenoid. Repair the
open or short.
(6) Next, back-probe the wire connector with a test
light, placing the test light in series between the two
wires. At this point, the test light should illuminate.
If not, there is an open in the ground circuit or brake
lamp switch. Repair the open or replace brake lamp
switch as necessary.
(7) Depress the brake pedal. The test light should
go out. If it does not, there is a short in the ground
circuit or brake lamp switch. Repair the short or
replace brake lamp switch as necessary.
Fig. 373 Ignition Key/Switch Positions
1 - ACC
2 - LOCK
3 - OFF
4 - ON/RUN
5 - START
21 - 138
TRANSAXLE
LH
SHIFT INTERLOCK SYSTEM (Continued)
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