Infiniti QX56 (JA60). Manual - part 955

2. Control cable adjustment

3. Input clutch solenoid valve

TM-82

4. CAN communication line

5. Engine speed signal

6. Input speed sensor

7. Output speed sensor and vehicle speed signal

8. Fluid level and state

9. Control valve with TCM

OFF vehicle

10. Input clutch

Shock is too large
when changing D

→

ON vehicle

1. Accelerator pedal position sensor

2. Control cable adjustment

3. Front brake solenoid valve

4. CAN communication line

5. Engine speed signal

6. Input speed sensor

7. Output speed sensor and vehicle speed signal

8. Fluid level and state

9. Control valve with TCM

OFF vehicle

10. Front brake (brake band)

TM-192

11. Input clutch

Shock is too large for
downshift when accel-
erator pedal is
pressed.

ON vehicle

1. Accelerator pedal position sensor

2. Control cable adjustment

3. CAN communication line

4. Engine speed signal

5. Input speed sensor

6. Output speed sensor and vehicle speed signal

7. Fluid level and state

8. Control valve with TCM

OFF vehicle

9. Front brake (brake band)

TM-192

10. Input clutch

11. High and low reverse clutch

TM-237

12. Direct clutch

TM-239

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page

SYSTEM SYMPTOM

TM-123

< SYMPTOM DIAGNOSIS >

Shift
Shock

Shock is too large for
upshift when accelera-
tor pedal is released.

ON vehicle

1. Accelerator pedal position sensor

2. Control cable adjustment

3. Engine speed signal

4. CAN communication line

5. Input speed sensorInput speed sensor

6. Output speed sensor and vehicle speed signal

7. Fluid level and state

8. Control valve with TCM

OFF vehicle

9. Front brake (brake band)

TM-192

10. Input clutch

11. High and low reverse clutch

TM-237

12. Direct clutch

TM-239

Shock is too large for
lock-up.

ON vehicle

1. Accelerator pedal position sensor

2. Control cable adjustment

3. Engine speed signal

4. CAN communication line

5. Input speed sensor

6. Output speed sensor and vehicle speed signal

7. Torque converter clutch solenoid valve

TM-65

8. Fluid level and state

9. Control valve with TCM

OFF vehicle

10. Torque converter

Shock is too large dur-
ing engine brake.

ON vehicle

1. Accelerator pedal position sensor

2. Control cable adjustment

3. CAN communication line

4. Fluid level and state

5. Control valve with TCM

OFF vehicle

6. Front brake (brake band)

7. Input clutch

8. High and low reverse clutch

9. Direct clutch

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page

TM-124

< SYMPTOM DIAGNOSIS >

SYSTEM SYMPTOM

No Up
Shift

Gear does not change
from D

→ D

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. Direct clutch solenoid valve

4. Line pressure test

5. CAN communication line

6. Control valve with TCM

OFF vehicle

7. Direct clutch

Gear does not change
from D

→ D

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. High and low reverse clutch solenoid valve

TM-88

4. Line pressure test

5. CAN communication line

6. Control valve with TCM

OFF vehicle

7. High and low reverse clutch

Gear does not change
from D

→ D

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. Input clutch solenoid valve

TM-82

4. Front brake solenoid valve

5. Line pressure test

6. CAN communication line

7. Control valve with TCM

OFF vehicle

8. Input clutch

Gear does not change
from D

→ D

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. Front brake solenoid valve

4. Direct clutch solenoid valve

5. Input speed sensor

6. Line pressure test

7. CAN communication line

8. Control valve with TCM

OFF vehicle

9. Front brake (brake band)

10. Input clutch

No.

Items

Symptom

Condition

Diagnostic Item

Reference

page

SYSTEM SYMPTOM

TM-125

< SYMPTOM DIAGNOSIS >

No Down
Shift

In “D” or "4" range,
does not downshift to
4GR.

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. Front brake solenoid valve

4. Direct clutch solenoid valve

5. CAN communication line

6. Line pressure test

7. Control valve with TCM

OFF vehicle

8. Front brake (brake band)

9. Input clutch

In “D” or "3" range,
does not downshift to
3GR.

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. Input clutch solenoid valve

TM-82

4. Front brake solenoid valve

5. CAN communication line

6. Line pressure test

7. Control valve with TCM

OFF vehicle

8. Input clutch

In “D” or "2" range,
does not downshift to
2GR.
.

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. High and low reverse clutch solenoid valve

TM-88

4. CAN communication line

5. Line pressure test

6. Control valve with TCM

OFF vehicle

7. High and low reverse clutch

In “D” or "1" range,
does not downshift to
1GR.

ON vehicle

1. Fluid level and state

2. Output speed sensor and vehicle speed signal

3. Direct clutch solenoid valve

4. CAN communication line

5. Line pressure test

6. Control valve with TCM

OFF vehicle

7. Direct clutch