7

No shifting

DESCRIPTION

• Single shift position only.

• Sometimes it shifts correctly.

POSSIBLE CAUSE

• When the gear position is fixed in 4GR due to the fail-safe operation, malfunction is in the AT.

• Clutch burnt (C1 clutch, C2 clutch, C3 clutch, B1 brake, B2 brake, B3 brake, B4 brake)

• Line pressure low

• Incorrect accelerator pedal position signal

• Incorrect engine speed signal

• Incorrect engine coolant temperature signal

• Incorrect engine torque signal

• VSS malfunction

• Turbine sensor malfunction

• Sensor ground malfunction

• Shift solenoid A malfunction

• Shift solenoid B malfunction

• Shift solenoid C malfunction

• Shift solenoid D malfunction

• Shift solenoid E malfunction

• Shift solenoid F malfunction

• Shift solenoid G malfunction

• Line pressure control solenoid malfunction

• Control valve body malfunction

• 4GR is fixed (Operation in fail-safe function)

• Short or open circuit in wiring harness

• Poor connection of connector

• Poor ground of shift solenoid

• Malfunction of electronic parts of output and input system

• TFT sensor malfunction

• TR switch malfunction

• TCM malfunction

NOTE:

• If a tire of a different diameter from the standard tire is installed, the TCM determines that the driving mode is the AAS mode, and may change to a different shift timing from the normal timing.

STEP

INSPECTION

ACTION

1

• With the ignition switch at the ON position.

• Does the gear position indication correspond to the selector lever position?

Yes

Go to the next step.

No

Perform the symptom troubleshooting “NO.27 GEAR POSITION INDICATION ILLUMINATES IN D POSITION”, or “NO.28 GEAR POSITION INDICATION DOES NOT ILLUMINATE IN M POSITION”.

(See NO.27 GEAR POSITION INDICATION ILLUMINATES IN D POSITION [SJ6A-EL].)

(See NO.28 GEAR POSITION INDICATION DOES NOT ILLUMINATE IN M POSITION [SJ6A-EL].)

2

• Access the following PCM PIDs using the M-MDS:

  (See ON-BOARD DIAGNOSTIC TEST [PCM (SKYACTIV-G 2.0)].)

• RPM

• APP

• TP_REL

• ECT

• Are the PIDs value normal?

  (See PCM INSPECTION [SKYACTIV-G 2.0].)

Yes

Go to the next step.

No

Repair or replace the malfunctioning part according to the inspection results.

3

• Inspect the TFT sensor.

  (See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR INSPECTION [SJ6A-EL].)

• Is the TFT sensor normal?

Yes

Go to the next step.

No

Replace the TFT sensor.

(See TRANSMISSION FLUID TEMPERATURE (TFT) SENSOR REMOVAL/INSTALLATION [SJ6A-EL].)

4

• Stop the engine.

• Inspect the following solenoid:

  (See SOLENOID VALVE INSPECTION [SJ6A-EL].)

• Shift solenoid A

• Shift solenoid B

• Shift solenoid C

• Shift solenoid D

• Shift solenoid E

• Shift solenoid F

• Shift solenoid G

• Line pressure control solenoid

• Are these solenoids normal?

Yes

Inspect the ATF condition.

• If a large amount of metal specks are found, overhaul the transmission and repair or replace any malfunctioning parts.

  (See AUTOMATIC TRANSMISSION REMOVAL/INSTALLATION [SJ6A-EL].)

  (See Automatic Transmission Workshop Manual [SJ6A-EL].)

• If a large amount of metal specks are not found, replace the control valve body.

  (See CONTROL VALVE BODY REMOVAL [SJ6A-EL].)

  (See CONTROL VALVE BODY INSTALLATION [SJ6A-EL].)

No

Replace the control valve body.

(See CONTROL VALVE BODY REMOVAL [SJ6A-EL].)

(See CONTROL VALVE BODY INSTALLATION [SJ6A-EL].)

5

• Verify test results.

• If normal, return to the diagnostic index to service any additional symptoms.

• If malfunction remains, inspect the related Service Bulletins and/or On-line Repair Information and perform repair or diagnosis.

• If the vehicle is repaired, troubleshooting completed.

• If the vehicle is not repaired or additional diagnostic information is not available, replace the TCM. (See TCM REMOVAL/INSTALLATION [SJ6A-EL].)