|
|
|
Content .. 1448 1449 1450 1451 ..
7A–42 AUTOMATIC TRANSMISSION (AW30-40LE) DTC P0748 (FLASHING CODE 35) PRESSURE CONTROL SOLENOID FAILURE (STH) D07RY00047 Circuit description: Fail-safe control: Failure detection: • When the feedback A/D value is more than 1020 for 500 milli-second continuously. • Detection inhibit condition: Prohibition during 1 second after reversion from open failure, because the Open failure (Including GND Short) • When the feedback A/D value is less than 15 for more than 70 milli-second continuously, judges as faliure, • When it continues for 12.5 second in total. Contents of control: • Lock-up control inhibit • Up hill and down hill control inhibit • Squat control inhibit At failure decision Executes following items in addition to above control •Turns Solenoid power supply OFF • Blinks "CHECK TRANS" lamp • Stores the failure information in failure memory * Prohibits failure detection of S1, S2, SL, STH, selector position switch, and oil temperature sensor. Conditions of turning "CHECK TRANS" off: → OFF → ON. Reversion conditions from fail-safe: When IG short failure···The feedback A/D value is At failure decision Recovers at the same time as the conditions of Test description: The following numbers correspond to circled numbers on (1) The solenoid resistance is within the range of 5 to 5.6 Ω . (2) This test checks for shorted circuit at the TCM. Diagnostic aids: |