Dodge RAM TRUCK 1500 1995 Service Manual page 1411

21-128 <C2RH/46RH/47RH TRANSMISSION DIAGNOSIS AND TESTING B R
TORQUE CONVERTER DIAGNOSIS
CONDITION P O S S I B L E CAUSES
CORRECTION
CONVERTER CLUTCH WILL
NOT ENGAGE
1. Circuit fuse open.
2. Solenoid or relay wiring
disconnected, open, shorted.
3. Clutch solenoid or relay
malfunction (short, open, stuck).
4. Sticking converter clutch or
switch valve.
5. Clutch module tube loose,
module cover not secured,
or module components
misassembled.
6. Converter clutch failure, turbine
hub leak, or overrunning clutch
(in converter) failed.
7. Oil pump fault (gears worn,
seal leaks, housing damaged or
loose, reaction shaft seal rings
worn.
8. Input shaft seal rings worn,
damaged.
1. Replace fuse. Check for circuit short if
fuse blows again.
2. Repair wiring or replace harness.
3. Replace as needed.
4. Remove and disassemble valve body.
Clean and free-up valves.
5. Remove valve body. Reposition tube,
secure cover, or reassemble components.
6. Replace torque converter.
7. Remove and rebuild pump as needed.
8. Remove and repair or replace as needed.
CONVERTER CLUTCH WILL
NOT DISENGAGE
1. Converter clutch or switch valve
sticking.
2. Valve body fault (loose screws
causing cross leakage,
misassembled clutch module
parts, etc.).
1. Remove, disassemble valve body. Clean
and free-up valves.
2. Remove and service valve body. Replace
as assembly if valves, bores, plugs,
housings, transfer plate, etc., are damaged.
CONVERTER CLUTCH
STAYS ENGAGED AT TOO
LOW A SPEED
1. Converter solenoid fault
(sticking, check ball).
2. Clutch module fault.
3. Valve body fault.
1. Replace solenoid.
2. Remove valve body and examine module.
Check valves, springs, connecting tube, and
end cover for misassembly, damage, being
loose.
3. Remove and service valve body. Look for
stuck clutch and switch valve, loose
housing screws, clutch solenoid wire
damage, etc.
VIBRATION OR SHUDDER
DURING CONVERTER
CLUTCH ENGAGEMENT
1. Low fluid level.
2. Incorrect fluid.
3. Engine problem:
(a) ignition fault
(b) fuel system fault.
4. Torque converter fault:
(a) out of balance
(b) clutch failure
(c) turbine hub seal leak.
1. Top off level and check for leaks.
2. Drain and refill with MOPAR ATF Plus
type 7176.
3. Diagnose with DRB scan tool and correct
as needed.
4. Replace converter.
J9521-143