Nissan Cube. Manual - part 974

TM-152

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P1723 SPEED SENSOR

NO

>> Repair or replace damaged parts.

P1726 THROTTLE CONTROL SIGNAL

TM-153

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

C

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P1726 THROTTLE CONTROL SIGNAL

Description

INFOID:0000000009949027

Electric throttle control system consists of throttle control motor, accelerator position sensor, throttle position
sensor, and others. Electric throttle control system transmits signal to ECM and ECM transmits signal to TCM
via CAN communication.

DTC Logic

INFOID:0000000009949028

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1.

Start the engine.

2.

Maintain idling state for 10 seconds or more.

3.

Select “Self Diagnostic Results” in “TRANSMISSION”.

Is “P1726” detected?

YES

>> Go to 

GI-40, "Intermittent Incident"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009949029

1.

CHECK DTC WITH ECM

With CONSULT

1.

Turn ignition switch ON.

2.

Perform “Self Diagnostic Results” in “ENGINE”.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> Check DTC detected item. Refer to 

EC-455, "DTC Index"

.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P1726

Throttle Control Signal Circuit

TCM receives a malfunction signal of en-
gine system from ECM

Harness or connectors
(Electric throttle sensor signal circuit is open 
or shorted.)

TM-154

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

P1740 SELECT SOLENOID

P1740 SELECT SOLENOID

Description

INFOID:0000000009949030

• Lock-up select solenoid valve is installed to control valve.
• Lock-up select solenoid valve switches among lock-up oil pressure, forward clutch oil pressure, and reverse

brake oil pressure.

• Lock-up select solenoid valve is an ON/OFF solenoid valve.

DTC Logic

INFOID:0000000009949031

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.

1.

PRECONDITIONING

Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE (PART 1)

With CONSULT

1.

Start the engine.

2.

Select “Data Monitor” in “TRANSMISSION”.

3.

Select “RANGE”.

4.

Maintain the following conditions for 1 seconds or more.

5.

Select “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.
Is “P1740” detected?

YES

>> Go to 

TM-155, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE (PART 2)

With CONSULT

1.

Select “Data Monitor” in “TRANSMISSION”.

2.

Select “RANGE”.

3.

Maintain the following state for 1 second or more.

4.

Select “Self Diagnostic Results” in “TRANSMISSION”.

With GST

Follow the procedure “With CONSULT”.

Is “P1740” detected?

YES

>> Go to 

TM-155, "Diagnosis Procedure"

.

DTC

Trouble diagnosis name

DTC is detected if...

Possible cause

P1740

Lock-up Select Solenoid Valve 
Circuit

• Lock-up select solenoid valve monitor 

value is OFF when lock-up select sole-
noid valve command value of TCM is ON

• Lock-up select solenoid valve monitor 

value is ON when lock-up select solenoid 
valve command value of TCM is OFF

• Harness or connectors

(Lock-up select solenoid valve circuit is 
open or shorted.)

• Lock-up select solenoid valve

RANGE

: N·P

RANGE

: R·D

P1740 SELECT SOLENOID

TM-155

< DTC/CIRCUIT DIAGNOSIS >

[CVT: RE0F08B]

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NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009949032

1.

CHECK LOCK-UP SELECT SOLENOID VALVE CIRCUIT

1.

Turn ignition switch OFF.

2.

Check resistance between TCM connector terminal and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> GO TO 2.

2.

CHECK LOCK-UP SELECT SOLENOID VALVE

1.

Disconnect CVT unit harness connector.

2.

Check lock-up select solenoid valve. Refer to 

TM-155, "Component Inspection (Lock-up Select Solenoid

Valve)"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Lock-up select solenoid valve is malfunctioning. Replace transaxle assembly. Refer to 

TM-235,

"Exploded View"

.

3.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK-UP SELECT SOLENOID VALVE) (PART 1)

1.

Disconnect TCM connector.

2.

Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace damaged parts.

4.

CHECK HARNESS BETWEEN TCM AND CVT UNIT (LOCK-UP SELECT SOLENOID VALVE) (PART 2)

Check continuity between TCM vehicle side harness connector terminal and ground.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-40, "Intermittent Incident"

.

NO

>> Repair or replace damaged parts.

Component Inspection (Lock-up Select Solenoid Valve)

INFOID:0000000009949033

1.

CHECK LOCK-UP SELECT SOLENOID VALVE

Check resistance between CVT unit harness connector terminal and ground.

TCM connector

Ground

Condition

Resistance (Approx.)

Connector

Terminal

E18

4

CVT fluid temperature: 20

°

C (68

°

F)

12.3 – 13.5 

Ω

CVT fluid temperature: 50

°

C (122

°

F)

13.7 – 15.1 

Ω

CVT fluid temperature: 80

°

C (176

°

F)

15.1 – 16.7 

Ω

TCM vehicle side harness connector

CVT unit vehicle side harness connector

Continuity

Connector

Terminal

Connector

Terminal

E18

4

F24

13

Existed

TCM vehicle side harness connector

Ground

Continuity

Connector

Terminal

E18

4

Not existed