8

Does not shift to 6GR

DESCRIPTION

• Vehicle does not upshift from 5GR to 6GR even though vehicle speed increased.

• Vehicle does not shift to 6GR even though accelerator pedal is released in D position at 80 km/h {50 mph}.

POSSIBLE CAUSE

• Basically, the 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 position 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.

• C2 clutch, C3 clutch, B2 brake slippage, burnt

• 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

• TFT sensor malfunction

• Short or open circuit in wiring harness

• Poor connection of connector

• Sensor malfunction

• TR switch malfunction

• Selector lever malfunction

• TR switch adjustment incorrect

• Shift solenoid A, shift solenoid B, shift solenoid C, shift solenoid D, shift solenoid G, line pressure control solenoid malfunction

• Short or open circuit in wiring harness

• Poor connection of connector

• Solenoid valve stuck

• M position switch (built-in selector lever) malfunction

• Selector lever malfunction

• Short or open circuit in wiring harness

• Torque converter malfunction

• Control valve body malfunction

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

• Drive the vehicle in D position 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

• 5–6 shift up and down

• Are all shift-up and shift-down possible?

Yes

Go to the next step.

No

No shift at all:

• Perform the symptom troubleshooting “NO.7 NO SHIFTING”.

  (See NO.7 NO SHIFTING [SJ6A-EL].)

Abnormal shift:

• Perform the symptom troubleshooting “NO.9 ABNORMAL SHIFTING”.

  (See NO.9 ABNORMAL SHIFTING [SJ6A-EL].)

5

• 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 G

• Line pressure control solenoid

• Are these solenoids normal?

Yes

Go to the next step.

No

Inspect for shift solenoid stuck.

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

6

• Inspect the ATF condition.

  (See AUTOMATIC TRANSMISSION FLUID (ATF) INSPECTION [SJ6A-EL].)

• Are there any metal specks found?

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 torque converter.

(See TORQUE CONVERTER REMOVAL/INSTALLATION [SJ6A-EL].)

7

• 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].)