No.8 Does Not Shift To Fifth Gear (5GR): Notes

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

DOES NOT SHIFT TO FIFTH GEAR - DESCRIPTION AND POSSIBLE CAUSES

8	Does not shift to fifth gear (5GR)
DESCRIPTION	Vehicle does not upshift from 4GR to 5GR even though vehicle speed increased. Vehicle does not shift to 5GR even though accelerator pedal released in D range at 60 km/h {37 mph) .
POSSIBLE CAUSE	Basically, TCC does not operate when fail-safe is operating. Verify DTC at first. If TCC operates when driving at high speeds only, malfunction (improper adjustment) is in the O/D OFF switch circuit or TR switch circuit. NOTE: If the TCC or piston is stuck, inspect them. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF. TCC piston slipped, burned Line pressure low Incorrect throttle position signal Malfunction of ECT sensor Malfunction of VSS Malfunction of input/turbine speed sensor Malfunction of sensor ground Malfunction of TFT sensor Short or open circuit in wiring Poor connection of connector Malfunction of sensor Malfunction of TR switch Selector lever adjustment incorrect TR switch adjustment incorrect Malfunction of TCC solenoid valve Short or open circuit in wiring Poor connection of connector Solenoid valve stuck Malfunction of O/D OFF switch Malfunction of torque converter Malfunction of control valve body NOTE: Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.

Does not shift to fifth gear (5GR)

DESCRIPTION

Vehicle does not upshift from 4GR to 5GR even though vehicle speed increased.
Vehicle does not shift to 5GR even though accelerator pedal released in D range at 60 km/h {37 mph) .

POSSIBLE CAUSE

Basically, TCC does not operate when fail-safe is operating. Verify DTC at first. If TCC operates when driving at high speeds only, malfunction (improper adjustment) is in the O/D OFF switch circuit or TR switch circuit.
NOTE:
- If the TCC or piston is stuck, inspect them. In addition, inspect the oil cooler for foreign particles which may have mixed in with the ATF.
- TCC piston slipped, burned
  - Line pressure low
  - Incorrect throttle position signal
  - Malfunction of ECT sensor
  - Malfunction of VSS
  - Malfunction of input/turbine speed sensor
  - Malfunction of sensor ground
- Malfunction of TFT sensor
  - Short or open circuit in wiring
  - Poor connection of connector
  - Malfunction of sensor
- Malfunction of TR switch
  - Selector lever adjustment incorrect
  - TR switch adjustment incorrect
- Malfunction of TCC solenoid valve
  - Short or open circuit in wiring
  - Poor connection of connector
  - Solenoid valve stuck
- Malfunction of O/D OFF switch
- Malfunction of torque converter
- Malfunction of control valve body
NOTE:
- Before following troubleshooting steps, make sure that Automatic Transaxle On-Board Diagnostic and Automatic Transaxle Basic Inspection are conducted.