No. 8 Does Not Shift To 6GR: Notes

WARNING: This page is about a different car, the 2005 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.

DESCRIPTION AND POSSIBLE CAUSE

8	Does not shift to 6GR
DESCRIPTION	Vehicle does not upshift from 5GR to 6GR even though vehicle speed is increased. Vehicle does not shift to 6GR even though accelerator pedal is released in D range at 80 km/h {50 mph}.
POSSIBLE CAUSE	Basically, TCC does not operate when the fail-safe is operating. Verify the DTC at 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 slippage, burnt Line pressure low Incorrect throttle position signal VSS malfunction Input/turbine speed sensor malfunction Sensor GND malfunction TFT sensor malfunction Short or open circuit in wiring harness Poor connection of connector Sensor malfunction TR switch malfunction Selector lever adjustment incorrect TR switch adjustment incorrect TCC control solenoid malfunction Short or open circuit in wiring harness Poor connection of connector Solenoid valve stuck M range switch malfunction Selector lever adjustment incorrect Short or open circuit in wiring harness Torque converter 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 .)

Does not shift to 6GR

DESCRIPTION

Vehicle does not upshift from 5GR to 6GR even though vehicle speed is increased.
Vehicle does not shift to 6GR even though accelerator pedal is released in D range at 80 km/h {50 mph}.

POSSIBLE CAUSE

Basically, TCC does not operate when the fail-safe is operating. Verify the DTC at 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 slippage, burnt
  - Line pressure low
  - Incorrect throttle position signal
  - VSS malfunction
  - Input/turbine speed sensor malfunction
  - Sensor GND malfunction
- TFT sensor malfunction
  - Short or open circuit in wiring harness
  - Poor connection of connector
  - Sensor malfunction
- TR switch malfunction
  - Selector lever adjustment incorrect
  - TR switch adjustment incorrect
- TCC control solenoid malfunction
  - Short or open circuit in wiring harness
  - Poor connection of connector
  - Solenoid valve stuck
- M range switch malfunction
  - Selector lever adjustment incorrect
  - Short or open circuit in wiring harness
- Torque converter 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 .)