Suzuki XL7 2007 Service Manual page 1589

No 5-4 Downshift
Checks
DEFINITION: No fifth gear to fourth gear downshift
External Automatic Transmission Control Valve Body Assembly (39)
• 2--3, 3-4 Shift Solenoid Valve
Assembly (S2) (308)
• 1-2, 2-3, Reverse Shift Solenoid
Valve Assembly (S3) (300)
• Reverse Shift Solenoid Valve
Assembly (S5) (305)
Internal Automatic Transmission Control Valve Body Assembly (39)
• M1 Shift Valve (389)
• M2 Shift Valve (426)
• U1 Shift Valve (386)
• U2 Shift Valve (392)
• Shift Pressure Relay Valve (424)
Clutch - Mechanical/Hydraulic
2nd Coast Clutch and 2nd Clutch
Hub and 2nd Clutch Sprag
Assembly (11)
No 4-3 Downshift
Checks
DEFINITION: No fourth gear to third gear downshift
External Automatic Transmission Control Valve Body Assembly (39)
• 2--3, 3-4 Shift Solenoid Valve
Assembly (S2) (308)
• 1-2, 2-3, Reverse Shift Solenoid
Valve Assembly (S3) (300)
• 3-4, 4-5 Shift Solenoid Valve
Assembly (S4) (303)
Internal Automatic Transmission Control Valve Body Assembly (39)
• M1 Shift Valve (389)
• M2 Shift Valve (426)
• U1 Shift Valve (386)
• U2 Shift Valve (392)
Clutch - Mechanical/Hydraulic
4-5 Clutch Assembly (15)
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 assemblies as needed, and inspect the solenoid O-ring seals, and the
solenoid bores for signs of damage and/or missing seals. If the solenoid valves
responded electrically and there are no bore or seal concerns, replace the
solenoid valve assemblies 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) the fluid pump assembly (2), and the
2nd Coast Clutch and 2nd Clutch Hub and 2nd Clutch Sprag Assembly (11).
Inspect all related components for proper operation. Repair or replace as
necessary.
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 assemblies as needed, and inspect the solenoid O-ring seals, and the
solenoid bores for signs of damage and/or missing seals. If the solenoid valves
responded electrically and there are no bore or seal concerns, replace the
solenoid valve assemblies 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).
Inspect the 3rd gear band servo piston assembly (57) for signs of internal
binding, internal contamination, and/or missing parts. If the servo assembly was
found to be binding in the transmission case bore, it is possible that there is
damage to the 3rd gear band assembly (16). The 3rd gear band assembly (16)
should be physically inspected to verify proper operation.
Automatic Transmission:
Actions
Actions
5A-179