Suzuki XL7 2007 Service Manual page 1581

No Forward and Reverse
Condition
DEFINITION: No forward and reverse
No fluid or fluid level low
Torque Converter Assembly (1)
Physical damage to Fluid Pump
Assembly, (2) due to improper
Torque Converter (1) installation.
External Control Valve Body Assembly (39)
Line Pressure Control Solenoid
Valve Assembly (SLT) (316)
Inspect fluid level and color. Perform a fluid level inspection and make sure that
the fluid does not smell burnt, and shows no sign of coolant cross
contamination. If unable to determine if the transmission has the correct type of
fluid, drain the unit and refill with the correct fluid and retest.
• Torque converter (1) not physically connected to the engine flexplate due to
mounting bolts not installed or physical damage to torque converter mounting
lugs due to mounting bolts being too short in length. Perform an inspection of
the torque converter mounting bolts to verify that they are physically present
and if so, are they correct in length and size.
• Seizure or breaking of the torque converter sleeve or fluid pump assembly (2)
internal bushing, due to misalignment of the torque converter (1) pilot pin to
the engine crankshaft rear center pilot hole. Inspect the torque converter
sleeve and fluid pump bushing for signs of damage. If damage is present,
inspect crankshaft pilot hole and correct as necessary before installing a new
torque converter assembly (1).
• Torque converter (1) to flexplate mounting bolts length are too long, thus
causing internal damage to the torque converter (1) (projection into the front
cover) which in turn peels off the internal friction material from the torque
converter apply plate. Replace the torque converter assembly (1) and install
the correct torque converter to flexplate mounting bolts.
• Torque converter (1) internal lock-up friction material peeled off the apply
plate due to an attempted thread repair on one or more of the converter
mounting lug pads. Re-tapping of the mounting lug pad threads causes
projection of the front cover, which in turn peels off the lock-up clutch friction
material. Replace the torque converter assembly (1) and the torque converter
to flexplate mounting bolts if necessary.
Inspect the fluid pump drive gear (205) for damage. Replace the fluid pump
assembly (2) if there is damage to the gears.
Verify that the line pressure control solenoid valve assembly (SLT) (316)
responds electrically. If there is no response, perform an electrical diagnosis. If
there are no electrical concerns, remove the solenoid valve assembly, inspect
the O-ring seal, and bore for signs of damage and/or missing seal. If the valve
responded electrically and there are no bore or seal concerns, replace the line
pressure control solenoid valve assembly due to possible internal mechanical
concerns and retest. If a concern is still present after replacing the line pressure
control solenoid valve (316), then replace the control valve body assembly (39).
Automatic Transmission:
Action
5A-171