FixVault

No. 8 Does Not Shift To 5GR: Notes

8 Does not shift to 5GR
DESCRIPTION 
  • Vehicle does not upshift from 4GR to 5GR even though vehicle speed is increased.
  • Vehicle does not shift to 5GR even though accelerator pedal is released in D position at 60 km/h {37 mph}  .
POSSIBLE CAUSE 
  • Basically, TCC does not operate when the fail-safe is operating. Verify the DTCs first. If the TCC operates when driving at high speeds only, the malfunction (improper adjustment) is in the TR switch circuit.
CAUTION:
  • If the TCC is stuck, inspect it. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF.
  1. Clutch or brake slippage, burned
    • Line pressure low
    • APP sensor malfunction
    • ECT sensor malfunction
    • MAF malfunction
    • CKP malfunction
    • VSS malfunction
    • Input/turbine speed sensor malfunction
    • Sensor GND malfunction
  2. TFT sensor malfunction
    • Short or open circuit in wiring harness
    • Poor connection of connector
    • Sensor malfunction
  3. TR switch malfunction
    • Short or open circuit in wiring harness
    • Poor connection of connector
    • Sensor malfunction
    • Selector cable adjustment incorrect
    • TR switch adjustment incorrect
  4. Shift solenoid A, shift solenoid B, shift solenoid D, Shift solenoid F valve malfunction
    • Short or open circuit in wiring harness
    • Poor connection of connector
    • Solenoid valve stuck
  5. M position switch (built-in selector lever component) malfunction
  6. Control valve body malfunction
NOTE: