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 NO.8 DOES NOT SHIFT TO FIFTH GEAR (5GR) [JA5AX-EL]

NO.8 DOES NOT SHIFT TO FIFTH GEAR (5GR) [JA5AX-EL]

id050305809000

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 D range 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 M range 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.

Diagnostic procedure

STEP

INSPECTION

ACTION

1
• Turn ignition switch to ON.
• Does gear position indicator light indication correspond to selector lever position?
Yes
Go to next step.
No
Go to symptom troubleshooting No.27 "Gear position indicator light does not illuminate in M range" or No.28 "Gear position indicator light illuminates in D range or P, N, R positions".
2
• Drive vehicle in D range and inspect following:
- 1-2 shift up and down
- 2-3 shift up and down
- 3-4 shift up and down
- 4-5 shift up and down
• Are all shift-up and shift-down possible?
Yes
Go to next step.
No

No shift at all:

• Go to symptom troubleshooting No.7 "No shifting".

Abnormal shift:

• Go to symptom troubleshooting No.9 "Abnormal shifting".
3
• Stop engine.
• Inspect shift solenoid A, B, or C circuit.
• Are they okay?
Yes
Go to next step.
No
• Inspect for shift solenoid mechanical stuck.
4
• Remove torque converter.
• Inspect torque converter.
(See ATX Workshop Manual.)
• Is torque converter okay?
Yes
• Overhaul control valve body and repair or replace any defective parts.
(See ATX Workshop Manual.)
- If problem remains, replace or overhaul transaxle and repair or replace any defective parts.
(See AUTOMATIC TRANSAXLE AND TRANSFER REMOVAL/INSTALLATION [JA5AX-EL].)
(See ATX Workshop Manual.)
No
Replace torque converter.
5
• Verify test results.
- If okay, return to diagnostic index to service any additional symptoms.
- If malfunction remains, inspect related Service Informations and perform repair or diagnosis.
• If vehicle repaired, troubleshooting completed.
• If vehicle not repaired or additional diagnostic information not available, replace TCM.