Typical Malfunction Thresholds
WARNING: This page is about a different car, the 2024 Lexus IS 500, 2023 Lexus IS 500, and 2022 Lexus IS 500. However, it is still accessible from the selected car via links, so may be relevant.
OFF malfunction
- When one of the following conditions is met: OFF malfunction (A), (B), (C), (D) or (E)OFF MALFUNCTION (A)
Turbine speed - Output speed (NT - NO) x 5th gear ratio 400 rpm or more OFF MALFUNCTION (B)Turbine speed - Output speed (NT - NO) x 6th gear ratio 400 rpm or more OFF MALFUNCTION (C)Turbine speed - Output speed (NT - NO) x 7th gear ratio 400 rpm or more OFF MALFUNCTION (D)Turbine speed - Output speed (NT - NO) x 8th gear ratio 400 rpm or more OFF MALFUNCTION (E)Shift solenoid valve SLT ON malfunction
ON malfunction
- When one of following conditions is met: ON malfunction (A), (B) or (C)
2 detections are necessary per driving cycle:
1st detection: temporary flag ON
2nd detection: pending fault code ON
ON malfunction (A)
- When either condition below is met: Condition (1) or (2)CONDITION (1)
Turbine speed / Output speed (NT / NO) 1.141 or more and 1.291 or less
(when output speed less than 600 rpm)CONDITION (2)Turbine speed - Output speed (NT - NO) x 5th gear ratio
(Actual 5th gear)-50 rpm or more and 50 rpm or less
(when output speed 600 rpm or more)
ON malfunction (B)
- When either condition below is met: Condition (1) or (2)CONDITION (1)
Turbine speed / Output speed (NT / NO) 0.62 or more and 0.75 or less
(when output speed less than 1000 rpm)CONDITION (2)Turbine speed - Output speed (NT - NO) x 8th gear ratio
(Actual 8th gear)-50 rpm or more and 50 rpm or less
(when output speed 1000 rpm or more)
ON malfunction (C)
- When either condition below is met: Condition (1) or (2)CONDITION (1)
Turbine speed / Output speed (NT / NO) 0.93 or more and 1.07 or less
(when output speed less than 800 rpm)CONDITION (2)Turbine speed - Output speed (NT - NO) x 6th gear ratio
(Actual 6th gear)-50 rpm or more and 50 rpm or less
(when output speed 800 rpm or more)
- When either condition below is met: Condition (1) or (2)