Suzuki XL7 2007 Service Manual page 1596

5A-186 Automatic Transmission:
Condition
Automatic transmission case
assembly (17) wiring harness bore
concern
Fluid leak from the oil cooler line area
Oil Cooler Line Seals (87)
Harsh Park or Neutral to Drive Engagement
Checks
DEFINITION: Harsh PARK or NEUTRAL to DRIVE engagement
Fluid level low and/or contaminated,
or unit filled with the wrong type of
automatic transmission fluid (ATF)
Calibration
Adaptive learn function
Automatic Transmission Input
Speed Sensor Assembly (73)
External Automatic Transmission Control Valve Body Assembly (39)
• Reverse, 1st Shift Solenoid Valve
Assembly (S1) (310)
• 2-3, 3-4 Shift Solenoid Valve
Assembly (S2) (308)
• Line Pressure Control Solenoid
Valve Assembly (SLT) (316)
• Automatic Transmission Fluid
Temperature Sensor (36) - part of
the Automatic Transmission
Wiring Harness Assembly (33)
Internal Automatic Transmission Control Valve Body Assembly (39)
• M1 Shift Valve (389)
• M2 shift Valve (426)
• Neutral Relay Valve (356)
• Ball Check Valve (355)
• Solenoid Modulator Valve (346)
Inspect the transmission case assembly (17) wiring harness pass-through
connector internal bore for signs of damage or being oversize. Correct as
needed.
• Oil cooler lines not fully seated into seals
• Oil cooler line retainer mounting bolts not torqued to the correct specification,
cross-threaded or missing.
• Internal bore concern, damaged or oversize within the transmission case
assembly (17) oil cooler line seal bore.
Inspect the ATF level and color. Perform "Transmission Fluid Check" 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 ATF and retest.
Using a scan tool, verify that the current calibration level downloaded into the
transmission control module (TCM) is correct for this platform, including that the
correct TCM is being used for the platform. Refer to the appropriate service
information to verify that both engine and transmission calibrations are the most
current up-to-date level.
Perform adaptive learn procedure on the transmission in order for the TCM to
calibrate line pressure for accurate shifts.
Inspect the automatic transmission input speed sensor assembly (73) for loose
electrical connection and/or signs of physical damage that could cause erratic
output. The magnetic end of the sensor should be free of any metal shavings/
particles, including heavy friction material build-up. If metal or heavy friction
material is found, diagnose the cause and repair 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).
• Using a scan tool, verify that the transmission fluid temperature is correct. If
the transmission fluid temperature is NOT correct, diagnose and correct as
necessary.
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).
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