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AUTOMATIC TRANSMISSION (AW30-40LE) 7A-53 ‘01TFR/S (For Thailand)
D07L100008 Circuit description: Vehicle speed information is provided to the TCM by Fail-safe control: The TCM controls fail-safe by detecting output Failure detection:
• When not even 1 pulse is input in the output revolution sensor during the time 4 pulses are input
• When the failure criteria is continuously 500 times from the time ignition is turned ON until it is turned
• Detection inhibit condition: When speed meter sensor revolution is less than Contents of control: At failure detection • Uses the vehicle speed calculated by speed meter sensor for shift control
• Keeps the condition of transfer (High/Low judgment) just before detection until vehicle speed →4UP None) at vehicle speed 0km/h. (For UBS)
• Use high oil temperature map according to shift map priority at correct oil temperature control.
• Squat control inhibit
• Up hill and down hill control inhibit (For UBS)
• Reverse lockout control inhibit
• Stores the failure information in failure-memory At failure decision Executes following items in addition to above
• Blinks "CHECK TRANS" lamp Conditions of turning "CHECK TRANS" off: Turns "CHECK TRANS" lamp off when judged 0km/h Reversion conditions from fail-safe: Recovers at the same time as the conditions of turning Test description: The following numbers correspond to the step numbers from the output revolution sensor to the TCM. 2. At this test, the continuity of circuit wiring and the output revolution sensor is checked. 4. At this test, the continuity of the output revolution sensor is checked. Diagnostic aids: An intermittent may be caused by a poor connection, |