FixVault

Shift Point Is High Or Low: Notes

SHIFT POINT IS HIGH OR LOW DETECTION CONDITIONS AND POSSIBLE CAUSES (FW6A-EL)

TROUBLESHOOTING ITEM  Shift point Is high or low 
DESCRIPTION 
  • Shift point considerably different from automatic shift diagram.
  • Shift delays when accelerating.
  • Shift occurs suddenly when accelerating and engine speed does not increase.
POSSIBLE CAUSE 
  1. Signal malfunction
    • APP sensor malfunction
    • BARO sensor malfunction
    • Brake switch malfunction
    • ECT sensor No. 1 malfunction
    • IAT sensor No. 1 malfunction
  2. Low-G (XY) sensor (built into SAS control module) malfunction
    NOTE:
    • If a tire with a different diameter than the standard tire is installed, the TCM determines that the driving mode is the AAS mode, and may change to a different shift timing from the normal timing.
    • When SPORT mode is selected, a gear lower than NORMAL mode is selected, and the gear is maintained for a longer period of time, (with drive selection switch)
CAUTION:
  • Verify the malfunction symptom according to not only the PID value but also the symptom troubleshooting.