Suzuki XL7 2007 Service Manual page 1582

5A-172 Automatic Transmission:
Slips in Drive or No Drive
Condition
DEFINITION: Slips in drive or no drive
Fluid Level Low and/or
Contaminated or unit filled with the
wrong type of fluid
Low System Line Pressure
Fluid
Fluid Pump (2)
Torque Converter (1)
Fluid Filter (42)
Internal Transmission Concerns
External Control Valve Body Assembly (39)
Line Pressure Control Solenoid
Valve Assembly (SLT) (316)
Internal Control Valve Body Assembly (39)
• Primary Regulator Valve (395)
• Check Valve (360)
• Manual Valve (337)
• Line Pressure Control (SLT)
Accumulator Piston (433)
Clutch - Mechanical/Hydraulic
1-2 Reverse (B5) Clutch Assembly Remove the transmission case cover and 1-2 reverse clutch assembly (B5)
Forward (C1) Clutch
Front Internal Gear and Low Clutch
Sprag (F2) Assembly (25)
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.
Low fluid level, perform fluid level check and correct as needed.
Internal fluid pump (2) concern, diagnose fluid pump assembly and repair or
replace assembly as necessary.
Internal concern, diagnose the cause of the concern and repair as necessary.
Replace the torque converter assembly.
Fluid filter (42) restricted. Diagnose the cause of the restriction and repair as
necessary and replace the filter assembly.
Internal fluid leak, perform system air checks and repair as necessary.
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), replace the 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.
(19). Inspect all 1-2 reverse (B5) clutch components and operation. Repair as
necessary.
Remove the transmission case cover and 1-2 reverse clutch assembly (B5) (19)
and the forward and direct clutch assembly (23). Inspect all forward clutch (C1)
components and operation. Repair as necessary.
Remove the transmission case cover and 1-2 reverse clutch assembly (B5)
(19), the forward and direct clutch assembly (23), the front carrier sun gear
assembly (24), and the front internal gear and low clutch sprag assembly (25).
Inspect all components and operation. Repair as necessary.
Action