Chrysler 300M, Dodge Interpid. Manual - part 330
(8) Reconnect the wire connector to the solenoid.
If the circuit passes the above test and the shifter can
still be moved freely in and out of PARK without the
brake pedal depressed, replace the interlock cable.
COLUMN 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. 374)
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.
SHIFT LEVER 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.
(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 shifting the trans-
mission shift lever 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
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 number
2 with a test light. The test light should illuminate. 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.
(8) Reconnect the wire connector to the solenoid.
Fig. 374 Ignition Key/Switch Positions
1 - ACC
2 - LOCK
3 - OFF
4 - ON/RUN
5 - START
LH
TRANSAXLE
21 - 139
SHIFT INTERLOCK SYSTEM (Continued)