Nissan Versa Sedan. Manual - part 818

TM-178

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

P073F UNABLE TO ENGAGE 1GR

3. Keep the current driving status for 2 seconds or more if CONSULT screen changes from “OUT OFCONDI-

TION” to “TESTING”.

CAUTION:

When “TESTING” is not indicated on CONSULT for a long time, check “Self Diagnostic Results” in

“TRANSMISSION”. When a DTC other than “P073F” is detected, check the DTC. Refer to 

TM-109,

"DTC Index"

.

 With GST

1. Drive vehicle and maintain the following conditions for 2 seconds or more.

2. Check the first trip DTC.
Is  “OUT OF CONDITION”,  “STOP VEHICLE”, or “COMPLETED RESULT NG” displayed? / Is “P073F”

detected?

YES-1 (OUT OF CONDITION.)>>Perform “step 2” again.

YES-2 (STOP VEHICLE.)>>GO TO 3.

YES-3 (COMPLETED RESULT NG)>>Go to 

TM-179, "Diagnosis Procedure"

.

YES-4 (“P073F” is detected.)>>Go to 

TM-179, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

CHECK DTC DETECTION (CHECK 2)

With CONSULT

1. Select “1ST GR FNCTN P0731” in “DTC & SRT confirmation” in “TRANSMISSION”.

NOTE:

“1ST GR FNCTN P0731” can be used in this diagnosis.

2. Drive vehicle according to the following conditions.

3. Keep the current driving status for 2 seconds or more if CONSULT screen changes from “OUT OFCONDI-

TION” to “TESTING”.

CAUTION:

When “TESTING” is not indicated on CONSULT for a long time, check “Self Diagnostic Results” in

“TRANSMISSION”. When a DTC other than “P073F” is detected, check the DTC. Refer to 

TM-109,

"DTC Index"

.

 With GST

1. Drive vehicle and maintain the following conditions for 2 seconds or more.

2. Check the first trip DTC.
Is  “OUT OF CONDITION”,  “STOP VEHICLE”, or “COMPLETED RESULT NG” displayed? / Is “P073F”

detected?

YES-1 (OUT OF CONDITION.)>>Perform step 3 again.

YES-2 (STOP VEHICLE.)>>GO TO 4.

YES-3 (COMPLETED RESULT NG)>>Go to 

TM-179, "Diagnosis Procedure"

.

YES-4 (“P073F” is detected.)>>Go to 

TM-179, "Diagnosis Procedure"

.

Selector lever

: D position

Gear

: 1GR

Accelerator pedal position

: 3/8 or more

Vehicle speed

: 5 km/h (4 MPH) or more

Selector lever

: D position

Gear

: 1GR

Accelerator pedal position

: 3/8 or more

Vehicle speed

: 5 km/h (4 MPH) or more

Selector lever

: 1 position

Accelerator pedal position

: 0.7/8 or more

Vehicle speed

: 5 km/h (4 MPH) or more

Selector lever

: 1 position

Throttle position

: 0.7/8 or more

Vehicle speed

: 5 km/h (4 MPH) or more

P073F UNABLE TO ENGAGE 1GR

TM-179

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

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NO

>> GO TO 4.

4.

CHECK SYMPTOM

1. Stop the vehicle.

2. Drive vehicle in “D” position allowing it to shift from 1GR to 4GR and check shift timing and shift shock.

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009267944

1.

MALFUNCTION CAUSE SIMULATION TEST

Refer to 

GI-45, "Intermittent Incident"

. 

Is the check result normal?

YES 

>> Replace the transaxle assembly. Refer to 

TM-250, "Removal and Installation"

.

NO

>> Repair or replace the malfunctioning parts.

TM-180

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

P0740 TORQUE CONVERTER

P0740 TORQUE CONVERTER

DTC Logic

INFOID:0000000009267945

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Be careful of the driving speed.

1.

PREPARATION BEFORE WORK

If another “DTC CONFIRMATION PROCEDURE” occurs just before, turn ignition switch OFF and wait for at

least 10 seconds, then perform the next test.

>> GO TO 2.

2.

CHECK DTC DETECTION

1. Drive the vehicle.

2. Maintain the following conditions for 5 seconds or more.

3. Stop the vehicle.

4. Check the first trip DTC.
Is “P0740” detected?

YES

>> Go to 

TM-180, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009267946

1.

CHECK CIRCUIT BETWEEN TCM AND THE A/T UNIT

1. Turn the ignition switch OFF.

2. Disconnect the TCM connector and the A/T unit connector.

3. Check the continuity between the TCM harness connector and the A/T unit harness connector.

Is the check result normal?

YES 

>> GO TO 2.

NO

>> Repair or replace the malfunctioning parts.

2.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

DTC

Trouble diagnosis name

DTC detection condition

Possible causes

P0740

Torque Converter Clutch Cir-
cuit/Open

The follow diagnosis conditions 
are met, and the TCM torque 
converter clutch solenoid valve 
current monitor reading is 200 
mA or less continuously for 0.5 
seconds or more.
• Diagnosis condition
- Solenoid valve output cur-

rent: 750 mA or more

- TCM power supply voltage: 

10 V < TCM power supply 
voltage < 16 V

• Harness or connector

(Torque converter clutch so-
lenoid valve circuit is open or 
shorted to power supply.)

• Torque converter clutch sole-

noid valve

Selector lever

: D position

Vehicle speed

: 45 km/h (28 MPH) or more

TCM harness connector

A/T unit harness connector

Continuity

Connector

Terminal

Connector

Terminal

F44

38

F46

18

Exists

P0740 TORQUE CONVERTER

TM-181

< DTC/CIRCUIT DIAGNOSIS >

[4AT: RE4F03C]

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Check the torque converter clutch solenoid valve. Refer to 

TM-181, "Component Inspection (Torque Converter

Clutch Solenoid Valve)"

.

Is the check result normal?

YES 

>> Check intermittent incident. Refer to 

GI-45, "Intermittent Incident"

.

NO

>> Repair or replace the malfunctioning parts.

Component Inspection (Torque Converter Clutch Solenoid Valve)

INFOID:0000000009267947

1.

CHECK TORQUE CONVERTER CLUTCH SOLENOID VALVE

Check the resistance between the A/T unit connector terminal and ground.

Is the check result normal?

YES

>> INSPECTION END

NO

>> There is a malfunction of the torque converter clutch solenoid valve. Replace the transaxle

assembly. Refer to 

TM-250, "Removal and Installation"

.

A/T unit connector

Ground

Condition

Resistance

Terminal

18

Ground

A/T fluid temperature: 20

°C 

(68

°F)

Approx. 6.1 

Ω

A/T fluid temperature: 50

°C 

(122

°F)

Approx. 6.9 

Ω

A/T fluid temperature: 80

°C 

(176

°F)

Approx. 7.7 

Ω