Suzuki XL7 2007 Service Manual page 1591

Torque Converter Clutch Stuck On or Off
Condition
DEFINITION: Torque converter clutch (TCC) stuck ON or OFF
Torque Converter Assembly (1)
External Control Valve Body Assembly (39)
• 1-2,2-3, Reverse Shift solenoid
Valve Assembly (S3) (300)
• 3-4, 4-5 Shift Solenoid Valve
Assembly (S4) (303)
• TCC Lock Up Pressure Control
Solenoid Valve Assembly (SLU)
(339)
Internal Control Valve Body Assembly (39)
• Secondary Regulator Valve (436)
• U2 Shift Valve (392)
• Solenoid Relay Valve (378)
• Lock Up Relay Valve (415)
• Lock Up Control Valve (454)
No Engine Braking in Fourth Gear
Checks
DEFINITION: No engine braking in fourth gear
External Automatic Transmission Control Valve Body Assembly (39)
Reverse Shift Solenoid Valve
Assembly (S5) (305)
Internal Automatic Transmission Control Valve Body Assembly (39)
• M1 Shift Valve (389)
• Shift Pressure Relay Valve (424)
• Shift Pressure Control Valve
(430)
Clutch - Mechanical/Hydraulic
2nd Coast Clutch Assembly (221-
230)
Perform an electrical performance test. If no concern was verified electrically,
inspect the torque converter assembly (1) for signs of internal damage caused
by an external issue such as mount bolts too long in length or thread repair.
Replace the torque converter assembly (1) making sure that the correct
flexplate mounting bolts are used.
Verify that all solenoids respond electrically. If there is no response, perform an
electrical diagnosis. If there are no electrical concerns, remove the solenoid
valve assembly as needed, and inspect the solenoids O-ring seals, and bores
for signs of damage and/or missing seals. If the valves responded electrically
and there are no bore or seal concerns, replace assembly as required due to a
possible internal mechanical concern and retest. If after replacing the valve
assembly in question, a concern is still present, replace the complete control
valve body assembly (39).
Remove the control valve body assembly to inspect the items listed. Inspect
internal bores and valves for signs of wear and/or damage, including internal
contamination. If unable to verify a repairable concern, replace the complete
valve body assembly.
Verify that the solenoid responds electrically. If there is no response, perform an
electrical diagnosis. If there are no electrical concerns, remove the solenoid
valve assembly as needed, and inspect the solenoid O-ring seals, and the
solenoid bore for signs of damage and/or missing seals. If the solenoid valve
responded electrically and there are no bore or seal concerns, replace the
solenoid valve assembly as necessary due to possible internal mechanical
concerns and retest. If a condition is still present after replacing the solenoid
valve assembly, replace the complete automatic transmission control valve
body assembly (39).
Remove the automatic transmission control valve body assembly (39) and
inspect the items listed. Inspect the internal bores and the valves for signs of
wear and/or damage, including internal contamination. If unable to verify any
repairable concerns, replace the complete automatic transmission control valve
body assembly (39).
Remove the torque converter assembly (1) and the automatic transmission fluid
pump, 2nd coast clutch, 2nd clutch assembly (2) in order to gain access to the
2nd coast clutch assembly (221-230). Disassemble the 2nd coast clutch
assembly and inspect. Repair or replace components as necessary to correct
the condition.
Automatic Transmission:
Action
Actions
5A-181