TORQUE CONVERTER LEAKAGE
Possible sources of torque converter leakage are:
• Torque converter weld leaks at the outside diam-
eter weld (Fig. 34).
• Torque converter hub weld (Fig. 34).
BRAKE/TRANSMISSION SHIFT INTERLOCK
SYSTEM (COLUMN SHIFT)
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. 35)
and brake pedal positions.
If the shift lever cannot be moved out of the PARK
position, refer to Shift Lever 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).
Fig. 34 Converter Leak Points—Typical
1 – OUTSIDE DIAMETER WELD
2 – TORQUE CONVERTER HUB WELD
3 – STARTER RING GEAR
4 – LUG
Fig. 35 Ignition Key/Switch Positions
1 – ACC
2 – LOCK
3 – OFF
4 – ON/RUN
5–START
ACTION EXPECTED RESPONSE
1. Turn key to the “OFF”
position.
1. Shifter CAN be shifted
out of park.
2. Turn key to the
9ON/RUN” position.
2. Shifter CANNOT be
shifted out of park.
3. Turn key to the
“ON/RUN” 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 “LOCK” or 9ACC”
position.
4. Key cannot be
returned to the “LOCK” or
“ACC” position.
5. Return shifter to
“PARK” and try to remove
the key.
5. Key can be removed
(after returning to “LOCK”
position).
6. With the key removed,
try to shift out of “PARK”.
6. Shifter cannot be
shifted out of “PARK”.
NOTE: Any failure to meet these expected
responses requires system adjustment or repair.
21 - 26 42LE TRANSAXLE LH
DIAGNOSIS AND TESTING (Continued)
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