Infiniti G37 Coupe. Manual - part 1321

CHECK SYMPTOM 2

With CONSULT-III

Stop vehicle.

Drive vehicle in “D” position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

>> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to

TM-163, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000001672152

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace damaged parts.

REPLACE CONTROL VALVE WITH TCM

Replace control valve with TCM. Refer to

TM-232, "Exploded View"

Perform “DTC CONFIRMATION PROCEDURE”. Refer to

TM-136, "DTC Logic"

Is the inspection result normal?

YES

>> INSPECTION END

>> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to

TM-112, "CONSULT-III Function (TRANSMISSION)"

Manual mode switch

: ON

Gear position

: “4” position

Accelerator opening

: 0.6/8 or more

Vehicle speed

: 10 km/h (6 MPH) or more

TM-138

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

P0735 A/T 5TH GEAR FUNCTION

P0735 A/T 5TH GEAR FUNCTION

Description

INFOID:0000000001672153

This malfunction is detected when the A/T does not shift into 5th gear position as instructed by TCM. This is
not only caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as
control valve sticking, improper solenoid valve operation, etc.

DTC Logic

INFOID:0000000001672154

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

Always drive vehicle at a safe speed.
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF. Then wait at least 10 seconds before performing the next test.

CHECK ATF TEMPERATURE

With CONSULT-III

Start the engine.

Select “DATA MONITOR”.

Check ATF temperature is in the following range.

With GST

Start the engine.

Drive vehicle for approximately 5 minutes in urban areas, GO TO 2.

Is ATF temperature within specified range?

YES

>> GO TO 2.

>> Drive vehicle to warm ATF or stop engine to cool ATF.

CHECK SYMPTOM 1

With CONSULT-III

Select “5TH GR FNCTN P0735” of “DTC WORK SUPPORT”.

Drive vehicle and maintain the following conditions.

DTC

Item

(CONSULT-III screen

terms)

A/T CHECK indicator
lamp judgment flicker

Diagnostic item is de-

tected when...

Possible cause

P0735

A/T 5TH GR FNCTN

22nd

TCM detects any incon-
sistency in the actual
gear ratio.

• Input clutch solenoid

valve

• Front brake solenoid

valve

• Direct clutch solenoid

valve

• High and low reverse

clutch solenoid valve

• Each clutch
• Hydraulic control cir-

cuit

ATF TEMP 1

: 20

C – 140

MANU MODE SW

: ON

GEAR

: “5” position

ACCELE POSI

: 0.6/8 or more

VEHICLE SPEED

: 10 km/h (6 MPH) or more

ENGINE SPEED

: TURBINE REV

−

50 rpm or more

TURBINE REV

: 300 rpm or more

P0735 A/T 5TH GEAR FUNCTION

TM-139

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

Keep the current driving status for at least 5 consecutive seconds if CONSULT-III screen changes from
“OUT OF CONDITION” to “TESTING”.

CAUTION:

If “TESTING” does not appear on CONSULT-III for a long time, select “SELF-DIAG RESULTS”. In
case a 1st trip DTC other than “P0735” is shown, refer to “SELF-DIAGNOSTIC RESULTS”. Refer to

With GST

Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

Check DTC.

Is “STOP VEHICLE” or “COMPLETED RESULT NG” displayed? / Is “P0735” detected?

YES-1 >> “STOP VEHICLE”: GO TO 3.
YES-2 >> “COMPLETED RESULT NG”: Go to

TM-139, "Diagnosis Procedure"

YES-3 >> “P0735” is detected: Go to

TM-139, "Diagnosis Procedure"

>> Check intermittent incident. Refer to

CHECK SYMPTOM 2

With CONSULT-III

Stop vehicle.

Drive vehicle in “D” position allowing it to shift from 1st to 5th gear and check shift timing and shift shock.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

>> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to

TM-163, "Diagnosis Procedure"

Diagnosis Procedure

INFOID:0000000001672155

CHECK TCM POWER SUPPLY AND GROUND CIRCUIT

Check TCM power supply and ground circuit. Refer to

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace damaged parts.

REPLACE CONTROL VALVE WITH TCM

Replace control valve with TCM. Refer to

TM-232, "Exploded View"

Perform “DTC CONFIRMATION PROCEDURE”. Refer to

TM-138, "DTC Logic"

Is the inspection result normal?

YES

>> INSPECTION END.

>> Confirm malfunction phenomena by “ROAD TEST” to repair malfunctioning part. Refer to

TM-140, "Diagnosis Procedure"

Manual mode switch

: ON

Gear position

: “5” position

Accelerator opening

: 0.6/8 or more

Vehicle speed

: 10 km/h (6 MPH) or more

TM-140

< COMPONENT DIAGNOSIS >

[5AT: RE5R05A]

P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE

P0740 TORQUE CONVERTER CLUTCH SOLENOID VALVE

Description

INFOID:0000000001672156

• The torque converter clutch solenoid valve is activated, with the gear in D

, D

, M2, M3, M4 and M5 by

the TCM in response to signals transmitted from the vehicle speed sensor and accelerator pedal position
sensor (throttle position sensor). Torque converter clutch piston operation will then be controlled.

• Lock-up operation, however, is prohibited when A/T fluid temperature is too low.
• When the accelerator pedal is depressed (less than 1.0/8) in lock-up condition, the engine speed should not

change abruptly. If there is a big jump in engine speed, there is no lock-up.

DTC Logic

INFOID:0000000001672157

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

CAUTION:

CHECK DTC DETECTION

With CONSULT-III

Start the engine.

Select “DATA MONITOR”.

Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.

With GST

Follow the procedure “With CONSULT-III”.

Is “P0740 TCC SOLENOID/CIRC” detected?

YES

>> Go to

>> Check intermittent incident. Refer to