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Home >> Infiniti >> 2019 >> QX50 Essential, FWD >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission >> Symptom Diagnosis >> CVT Control System >> Symptom Table >> Symptom Table 1
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Symptom Table 1

Symptom

Engine system

CAN communication line

Transmission range switch (P0705, P0706)

Input speed sensor (P0717)

Primary speed sensor (P0715)

Secondary speed sensor (P2765)

CVT fluid temperature sensor (P0711, P0712, P0713)

Primary pressure sensor (P084C, P084D)

Secondary pressure sensor (P0841, P0847, P0848)

Torque converter clutch solenoid valve (P0740, P0743, P0744)

Manual mode position

Stall test

CVT position

Power supply

Control valve

CVT fluid level and state

Ignition switch and starter

Electric shift selecter

Work Procedure

DTC Index 

Work Procedure 

Inspection and Adjustment 

Diagnosis Procedure

Removal and Installation 

Inspection 

Wiring Diagram - IGNITION POWER SUPPLY - , Work Flow (With GR8-1200 NI) , Work Flow (Without GR8-1200 NI)

CONSULT Function 

Shift Shock

Large shock (N-> D position)

1

4

8

3

6

2

9

5

Large shock (N-> R position)

1

4

8

3

6

2

9

5

Shock is too large for lock-up.

2

3

6

1

5

4

Slips/Will Not Engage

Vehicle cannot be started from D position.

8

3

5

6

7

9

10

11

4

2

12

13

1

14

Vehicle cannot be started from R position.

8

3

5

6

7

9

10

11

4

2

12

13

1

14

Does not lock-up.

2

6

8

3

4

10

9

11

12

5

7

13

1

Does not hold lock-up condition.

2

6

8

3

4

10

9

11

12

5

7

13

1

Lock-up is not released.

2

6

3

4

5

7

8

1

When shifted to D position, acceleration is extremely poor.

3

4

5

7

8

9

12

10

11

2

6

13

14

1

When shifted to R position, acceleration is extremely poor.

3

4

5

7

8

9

12

10

11

2

6

13

14

1

Slips at lock-up.

2

6

8

3

4

10

9

11

12

5

7

13

1

Other

No creep at all.

2

4

3

7

8

9

10

11

12

5

6

13

14

1

Vehicle cannot run in all positions.

8

2

5

6

7

9

10

11

3

4

12

13

1

When shifted to D position, driving is not possible.

8

2

5

6

7

9

10

11

3

4

12

13

1

When shifted to R position, driving is not possible.

8

2

5

6

7

9

10

11

3

4

12

13

1

Judder occurs during lock-up.

2

6

3

4

5

7

8

1

Strange noise in D position.

2

3

4

1

Strange noise in R position.

2

3

4

1

Strange noise in N position.

2

3

4

1

Vehicle does not decelerate by engine brake.

7

3

4

5

6

2

8

1

Maximum speed low.

2

3

5

6

7

8

9

11

4

10

1

When shifted to P position, vehicle does not enter parking condition or, with shifted to another position, parking condition is not cancelled.

1

2

Vehicle runs with CVT in P position.

1

3

4

2

Vehicle runs with CVT in N position.

1

3

4

2

Engine stall.

2

6

3

4

8

9

5

7

10

1

Engine stalls when shifted to N -> D or R.

2

6

3

4

5

7

1

Engine speed does not return to idle.

2

4

3

5

1

Does not shift

3

4

5

6

7

2

8

1

Other

Cannot be changed to manual mode.

4

2

6

6

1

3

5

1

Engine does not start in N or P position.

3

2

1

Engine starts in positions other than N or P.

3

2

1

Shift position indicator does not change when shifted.

1