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Fail-Safe Table

  1. FAIL-SAFE TABLE 
    1. This function minimizes the loss of the ECT functions when a malfunction occurs in each sensor or solenoid.
      FAIL-SAFE TABLE

      Malfunction Part Function
      DTC P0710, P0712 and P0713: No. 1 ATF Temperature Sensor During a No. 1 ATF temperature sensor malfunction, up-shift to the 5th gear and flex lock-up clutch control are prohibited.
      DTC P0722: Output Speed Sensor (SP2) During an output speed sensor malfunction, shift control is effected through the input speed sensor signal (NT).
      DTC P0751, P0756, P0771, P0973, P0974, P0976, P0977, P0985 and P0986: Shift Solenoid Valve S1, S2 and SR The current to the failed solenoid valve is cut off and control is effected by operating the other solenoid valves with normal operation. Shift control is effected depending on the failed solenoid.
      DTC P0748, P0776 and P0778: Shift Solenoid Valve SL1 and SL2 During a solenoid valve SL1 or SL2 malfunction, up-shift to the 5th gear is prohibited.
      DTC P02714 and P2716: Shift Solenoid Valve SLT During a solenoid valve SLT malfunction, the current to the solenoid valve is stopped. This stops line pressure optimal control, and shift shock increases. However, shifting is effected through normal clutch pressure control.
      DTC P2757: Shift Solenoid Valve SLU During a solenoid valve SLU malfunction, the current to the solenoid valve is stopped. This stops lock-up control and flex lock-up control, and fuel economy decreases.
    2. Fail-safe function:

      If either of the shift solenoid valve circuits has an open or short failure, the ECM turns the other shift solenoid ON and OFF in order to shift into the gear positions shown in FAIL-SAFE TABLE .

      In case of a short circuit, the ECM stops sending current to the short circuit solenoid.

      Even if starting the engine again in the fail-safe mode, the gear position remains in the same position.

      FAIL-SAFE TABLE

      Position Normal Shift Solenoid S1 Malfunction
      Gear S1 S2 SR SL1 SL2 Gear S1 S2 SR SL1 SL2
      R R ON OFF OFF OFF ON R X OFF OFF OFF ON
      D 1st ON OFF OFF OFF ON 4th
      ↓
      3rd      		 X OFF
      ↓
      ON      		 OFF OFF ON
      2nd ON ON OFF OFF ON 3rd X ON OFF OFF ON
      3rd OFF ON OFF OFF ON 3rd X ON OFF OFF ON
      4th OFF OFF OFF OFF ON 4th X OFF OFF OFF ON
      5th OFF OFF ON ON OFF 5th X OFF ON ON OFF
      4 1st ON OFF OFF OFF ON 4th
      ↓
      3rd      		 X OFF
      ↓
      ON      		 OFF OFF ON
      2nd ON ON OFF OFF ON 3rd X ON OFF OFF ON
      3rd OFF ON OFF OFF ON 3rd X ON OFF OFF ON
      4th OFF OFF OFF OFF ON 4th X OFF OFF OFF ON
      3 1st ON OFF OFF OFF ON 3rd
      ↓
      3rd E/B      		 X OFF
      ↓
      ON      		 OFF OFF ON
      ↓
      OFF
      2nd ON ON OFF OFF ON 3rd
      ↓
      3rd E/B      		 X ON OFF OFF ON
      ↓
      OFF
      3rd E/B OFF ON OFF OFF OFF 3rd E/B X ON OFF OFF OFF
      2 1st ON OFF OFF OFF ON 1st X OFF OFF OFF ON
      2nd E/B ON ON ON OFF OFF 3rd E/B X ON ON OFF OFF
      L 1st E/B ON OFF OFF OFF OFF 1st E/B X OFF OFF OFF OFF
      X: Malfunction
      HINT:
      • ↓: Condition in the electrical malfunction is shown above "↓".
      • ↓: Condition in the fail-safe mode is shown below "↓".
      • E/B: Engine brake.
      FAIL-SAFE TABLE

      Position Shift Solenoid S2 Malfunction Shift Solenoid SR Malfunction
      Gear S1 S2 SR SL1 SL2 Gear S1 S2 SR SL1 SL2
      R R ON X OFF OFF ON R ON OFF X OFF ON
      D 1st ON X OFF OFF ON 1st ON OFF X OFF ON
      1st
      ↓
      4th      		 ON
      ↓
      OFF      		 X OFF OFF ON 2nd ON ON X OFF ON
      4th OFF X OFF OFF ON 3rd OFF ON X OFF ON
      4th OFF X OFF OFF ON 4th OFF OFF X OFF ON
      5th OFF X ON ON OFF 4th OFF OFF X ON OFF
      4 1st ON X OFF OFF ON 1st ON OFF X OFF ON
      1st
      ↓
      4th      		 ON
      ↓
      OFF      		 X OFF OFF ON 2nd ON ON X OFF ON
      4th OFF X OFF OFF ON 3rd OFF ON X OFF ON
      4th OFF X OFF OFF ON 4th OFF OFF X OFF ON
      3 1st ON X OFF OFF ON 1st ON OFF X OFF ON
      1st
      ↓
      3rd E/B      		 ON
      ↓
      OFF      		 X OFF OFF ON
      ↓
      OFF      		 2nd ON ON X OFF ON
      3rd E/B OFF X OFF OFF OFF 3rd E/B
      ↓
      3rd      		 OFF ON X OFF OFF
      ↓
      ON
      2 1st ON X OFF OFF ON 1st ON OFF X OFF ON
      2nd E/B
      ↓
      4th      		 ON
      ↓
      OFF      		 X ON OFF OFF
      ↓
      ON      		 2nd ON ON X OFF OFF
      L 1st E/B ON X OFF OFF OFF 1st E/B ON OFF X OFF OFF
      X: Malfunction
      HINT:
      • ↓: Condition in the electrical malfunction is shown above "↓".
      • ↓: Condition in the fail-safe mode is shown below "↓".
      • E/B: Engine brake.
      FAIL-SAFE TABLE

      Position Shift Solenoid S1 and S2 Malfunction Shift Solenoid S1 and SR Malfunction
      Gear S1 S2 SR SL1 SL2 Gear S1 S2 SR SL1 SL2
      R R X X OFF OFF ON R X OFF X OFF ON
      D 4th X X OFF OFF ON 4th
      ↓
      3rd      		 X OFF
      ↓
      ON      		 X OFF ON
      4th X X OFF OFF ON 3rd X ON X OFF ON
      4th X X OFF OFF ON 3rd X ON X OFF ON
      4th X X OFF OFF ON 4th X OFF X OFF ON
      5th X X ON ON OFF 4th X OFF X ON
      ↓
      OFF      		 OFF
      ↓
      ON
      4 4th X X OFF OFF ON 4th
      ↓
      3rd      		 X OFF
      ↓
      ON      		 X OFF ON
      4th X X OFF OFF ON 3rd X ON X OFF ON
      4th X X OFF OFF ON 3rd X ON X OFF ON
      4th X X OFF OFF ON 4th X OFF X OFF ON
      3 3rd
      ↓
      3rd E/B      		 X X OFF OFF ON
      ↓
      OFF      		 3rd X OFF
      ↓
      ON      		 X OFF ON
      3rd
      ↓
      3rd E/B      		 X X OFF OFF ON
      ↓
      OFF      		 3rd X ON X OFF ON
      3rd E/B X X OFF OFF OFF 3rd E/B
      ↓
      3rd      		 X ON X OFF OFF
      ↓
      ON
      2 1st X X OFF OFF ON 1st X OFF X OFF ON
      4th X X ON OFF OFF
      ↓
      ON      		 2nd X ON X OFF OFF
      L 1st E/B X X OFF OFF OFF 1st E/B X OFF X OFF OFF
      X: Malfunction
      HINT:
      • ↓: Condition in the electrical malfunction is shown above "↓".
      • ↓: Condition in the fail-safe mode is shown below "↓".
      • E/B: Engine brake.
      FAIL-SAFE TABLE

      Position Shift Solenoid S2 and SR Malfunction Shift Solenoid S1, S2 and SR Malfunction
      Gear S1 S2 SR SL1 SL2 Gear S1 S2 SR SL1 SL2
      R R ON X X OFF ON R X X X OFF ON
      D 1st ON X X OFF ON 4th X X X OFF ON
      1st
      ↓
      4th      		 ON
      ↓
      OFF      		 X X OFF ON 4th X X X OFF ON
      4th OFF X X OFF ON 4th X X X OFF ON
      4th OFF X X OFF ON 4th X X X OFF ON
      4th OFF X X ON
      ↓
      OFF      		 OFF
      ↓
      ON      		 4th X X X ON
      ↓
      OFF      		 OFF
      ↓
      ON
      4 1st ON X X OFF ON 4th X X X OFF ON
      1st
      ↓
      4th      		 ON
      ↓
      OFF      		 X X OFF ON 4th X X X OFF ON
      4th OFF X X OFF ON 4th X X X OFF ON
      4th OFF X X OFF ON 4th X X X OFF ON
      3 1st ON X X OFF ON 3rd X X X OFF ON
      1st
      ↓
      3rd      		 ON
      ↓
      OFF      		 X X OFF ON 3rd X X X OFF ON
      3rd E/B
      ↓
      3rd      		 OFF X X OFF OFF
      ↓
      ON      		 3rd E/B
      ↓
      3rd      		 X X X OFF OFF
      ↓
      ON
      2 1st ON X X OFF ON 1st X X X OFF ON
      1st E/B
      ↓
      1st      		 ON X X OFF OFF
      ↓
      ON      		 1st E/B
      ↓
      1st      		 X X X OFF OFF
      ↓
      ON
      L 1st E/B ON X X OFF OFF 1st E/B X X X OFF OFF
      X: Malfunction
      HINT:
      • ↓: Condition in the electrical malfunction is shown above "↓".
      • ↓: Condition in the fail-safe mode is shown below "↓".
      • E/B: Engine brake.
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