No. 8 Does Not Shift To 4GR: Notes
POSSIBLE CAUSE DESCRIPTION CHART
| 8 |
Does not shift to 4GR |
| DESCRIPTION |
- Vehicle does not upshift from 3GR to 4GR even though vehicle speed is increased.
- Vehicle does not shift to 4GR even though accelerator pedal is released in D range 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 M range switch circuit or 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.
- TCC piston slippage, burnt
- Line pressure low
- TP sensor malfunction
- Engine coolant temperature sensor malfunction
- Vehicle speed sensor malfunction
- Input/turbine speed sensor malfunction
- Sensor GND malfunction
- Transaxle fluid temperature sensor malfunction
- Short or open circuit in wiring harness
- Poor connection of connector
- Sensor malfunction
- TR switch malfunction
- Short or open circuit in wiring harness
- Poor connection of connector
- Sensor malfunction
- Selector lever adjustment incorrect
- TR switch adjustment incorrect
- Shift solenoid A, shift solenoid B, shift solenoid D valve malfunction
- Short or open circuit in wiring harness
- Poor connection of connector
- Solenoid valve stuck
- M range switch malfunction
- Control valve body malfunction
NOTE:
- Before following the troubleshooting steps, make sure that the Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted. (See
BASIC INSPECTION ).
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