Infiniti M45 (Y34). Manual - part 52

TROUBLE DIAGNOSIS

AT-93

D

E

F

G

H

I

J

K

L

M

A

B

AT

TCM-POWER 
SUPPLY

●

When the power supply to the TCM is cut OFF, for example 
because the battery is removed, and the self-diagnostics 
memory function stops

●

This is not a malfunction message (Whenever shutting 
OFF a power supply to the TCM, this message appears on 
the screen.)

—

P1701

—

TCM·RAM

●

TCM memory (RAM) is malfunctioning.

—

P1702

—

TCM·ROM

●

TCM memory (ROM) is malfunctioning.

—

P1703

—

TCM·EEPROM

●

TCM memory (EEP ROM) is malfunctioning.

—

P1704

—

TP SEN/CIRC A/T

●

TCM does not receive the proper accelerator pedal position 
signals (input by CAN communication) from ECM.

X

P1705

—

ATF TEMP SEN/
CIRC

●

During running, the ATF temperature sensor signal voltage 
is excessively high or low

X

P1710

P0710

TURBINE REV S/
CIRC

●

TCM does not receive the proper voltage signal from the 
sensor.

●

TCM detects an irregularity only at position of 4th gear for 
turbine revolution sensor 2.

X

P1716

P1716

VEH SPD SE/
CIR·MTR

●

Signal (CAN communication) from vehicle speed sensor 
MTR not input due to cut line or the like

●

Unexpected signal input during running

—

P1721

—

A/T INTERLOCK

●

Except during shift change, the gear position and ATF pres-
sure switch states are monitored and comparative judge-
ment made.

X

P1730

P1730

A/T 1ST E/BRAK-
ING

●

Each ATF pressure switch and solenoid current is moni-
tored and if a pattern is detected having engine braking 1st 
gear other than in the M1 position, a malfunction is 
detected.

X

P1731

—

I/C SOLENOID/
CIRC

●

Normal voltage not applied to solenoid due to functional 
malfunction, cut line, short, or the like

●

TCM detects as irregular by comparing target value with 
monitor value.

X

P1752

P1752

I/C SOLENOID 
FNCTN 

●

TCM detects that actual gear ratio is irregular, and relation 
between gear position and condition of ATF pressure 
switch 3 is irregular during depressing accelerator pedal. 
(Other than during shift change)

●

TCM detects that relation between gear position and condi-
tion of ATF pressure switch 3 is irregular during releasing 
accelerator pedal. (Other than during shift change)

X

P1754

P1754*2

FR/B SOLENOID/
CIRC

●

Normal voltage not applied to solenoid due to functional 
malfunction, cut line, short, or the like

●

TCM detects as irregular by comparing target value with 
monitor value.

X

P1757

P1757

FR/B SOLENOID 
FNCTN

●

TCM detects that actual gear ratio is irregular, and relation 
between gear position and condition of ATF pressure 
switch 1 is irregular during depressing accelerator pedal. 
(Other than during shift change)

●

TCM detects that relation between gear position and condi-
tion of ATF pressure switch 1 is irregular during releasing 
accelerator pedal. (Other than during shift change)

X

P1759

P1759*2

Items (CONSULT-

II screen terms)

Malfunction is detected when...

TCM self-diagnosis

OBD-II (DTC)

A/T CHECK    

indicator 

lamp 

 “A/T” with   

CONSULT-II

MIL indicator 

lamp*1, 

“ENGINE” with 

CONSULT-II or 

GST

AT-94

TROUBLE DIAGNOSIS

D/C SOLENOID/
CIRC

●

Normal voltage not applied to solenoid due to cut line, 
short, or the like

●

TCM detects as irregular by comparing target value with 
monitor value.

X

P1762

P1762

D/C SOLENOID 
FNCTN

●

TCM detects that actual gear ratio is irregular, and relation 
between gear position and condition of ATF pressure 
switch 5 is irregular during depressing accelerator pedal. 
(Other than during shift change)

●

TCM detects that relation between gear position and condi-
tion of ATF pressure switch 5 is irregular during releasing 
accelerator pedal. (Other than during shift change)

X

P1764

P1764*2

HLR/C SOL/CIRC

●

Normal voltage not applied to solenoid due to functional 
malfunction, cut line, short, or the like

●

TCM detects as irregular by comparing target value with 
monitor value.

X

P1767

P1767

HLR/C SOL 
FNCTN

●

TCM detects that actual gear ratio is irregular, and relation 
between gear position and condition of ATF pressure 
switch 6 is irregular during depressing accelerator pedal. 
(Other than during shift change)

●

TCM detects that relation between gear position and condi-
tion of ATF pressure switch 6 is irregular during releasing 
accelerator pedal. (Other than during shift change)

X

P1769

P1769*2

LC/B SOLENOID/
CIRC

●

Normal voltage not applied to solenoid due to functional 
malfunction, cut line, short, or the like

X

P1772

P1772

LC/B SOLENOID 
FNCTN

●

TCM detects an improper voltage drop when it tries to oper-
ate the solenoid valve.

●

Condition of ATF pressure switch 2 is different from monitor 
value, and relation between gear position and actual gear 
ratio is irregular.

X

P1774

P1774*2

MANU MODE SW/
CIRC

●

When an impossible pattern of switch signals is detected, a 
malfunction is detected.

—

P1815

—

ATF PRES SW 1/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 1 is irregular during depressing accelerator pedal. 
(Other than during shift change)

—

P1841

—

ATF PRES SW 3/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 3 is irregular during depressing accelerator pedal. 
(Other than during shift change)

—

P1843

—

ATF PRES SW 5/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 5 is irregular during depressing accelerator pedal. 
(Other than during shift change)

—

P1845

—

Items (CONSULT-

II screen terms)

Malfunction is detected when...

TCM self-diagnosis

OBD-II (DTC)

A/T CHECK    

indicator 

lamp 

 “A/T” with   

CONSULT-II

MIL indicator 

lamp*1, 

“ENGINE” with 

CONSULT-II or 

GST

TROUBLE DIAGNOSIS

AT-95

D

E

F

G

H

I

J

K

L

M

A

B

AT

*1: Refer to 

AT-42, "Malfunction Indicator Lamp (MIL)"

 .

*2: These malfunctions cannot be displayed MIL if another malfunction is assigned to MIL.

DATA MONITOR MODE
Operation Procedure

1.

Perform “CONSULT-II SETTING PROCEDURE”. Refer to 

AT-91, "CONSULT-II SETTING PROCEDURE"

.

2.

Touch “DATA MONITOR”.

NOTE:
When malfunction is detected, CONSULT-II performs
“REAL-TIME DIAGNOSIS”. Also, any malfunction detected
while in this mode will be displayed at real time.

Display Items List

 X: Standard

—: Not applicable

ATF PRES SW 6/
CIRC

●

TCM detects that actual gear ratio is normal, and relation 
between gear position and condition of ATF pressure 
switch 6 is irregular during depressing accelerator pedal. 
(Other than during shift change)

—

P1846

—

NO DTC IS 
DETECTED FUR-
THER TESTING 
MAY BE 
REQUIRED

●

No NG item has been detected.

—

X

X

Items (CONSULT-

II screen terms)

Malfunction is detected when...

TCM self-diagnosis

OBD-II (DTC)

A/T CHECK    

indicator 

lamp 

 “A/T” with   

CONSULT-II

MIL indicator 

lamp*1, 

“ENGINE” with 

CONSULT-II or 

GST

SCIA5304E

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU INPUT 

SIGNALS

MAIN SIG-

NALS

SELEC-

TION FROM 

MENU

VHCL/S SE·A/T (km/h)

X

X

X

Revolution sensor

VHCL/S SE·MTR (km/h)

X

—

X

ACCELE POSI (0.0/8) 

X

—

X

Accelerator pedal position signal

THROTTLE POSI (0.0/8)

X

X

X

Degree of opening for accelerator recog-
nized by the TCM
For fail-safe operation, the specific value 
used for control is displayed.

CLSO THL POS (ON-OFF display)

X

—

X

Signal input with CAN communications

W/O THL POS (ON-OFF display)

X

—

X

Signal input with CAN communications

BRAKE SW (ON-OFF display)

X

—

X

Stop lamp switch

GEAR

—

X

X

Gear position recognized by the TCM 
updated after gear-shifting

ENGINE SPEED (rpm) 

X

X

X

TURBINE REV (rpm) 

X

X

X

OUTPUT REV (rpm) 

X

X

X

AT-96

TROUBLE DIAGNOSIS

GEAR RATIO

—

X

X

TC SLIP SPEED (rpm)

—

X

X

Difference between engine speed and 
torque converter input shaft speed

F SUN GR REV (rpm) 

—

—

X

F CARR GR REV (rpm)

—

—

X

ATF TEMP SE 1 (V)

X

—

X

ATF TEMP SE 2 (V)

X

—

X

ATF TEMP 1 (

°

C)

—

X

X

ATF TEMP 2 (

°

C)

—

X

X

BATTERY VOLT (V)

X

—

X

ATF PRES SW 1 (ON-OFF display)

X

X

X

(for FR/B solenoid)

ATF PRES SW 2 (ON-OFF display)

X

X

X

(for LC/B solenoid)

ATF PRES SW 3 (ON-OFF display)

X

X

X

(for I/C solenoid)

ATF PRES SW 5 (ON-OFF display)

X

X

X

(for D/C solenoid)

ATF PRES SW 6 (ON-OFF display)

X

X

X

(for HLR/C solenoid)

PNP SW 1 (ON-OFF display)

X

—

X

PNP SW 2 (ON-OFF display)

X

—

X

PNP SW 3 (ON-OFF display)

X

—

X

PNP SW 4 (ON-OFF display)

X

—

X

1 POSITION SW (ON-OFF display)

X

—

X

SLCT LVR POSI

—

X

X

Selector lever position is recognized by 
the TCM.
For fail safe operation, the specific value 
used for control is displayed.

OD CONT SW (ON-OFF display)

X

—

X

Not mounted but displayed.

POWERSHIFT SW (ON-OFF display)

X

—

X

HOLD SW (ON-OFF display)

X

—

X

MANU MODE SW (ON-OFF display)

X

—

X

NON M-MODE SW (ON-OFF display)

X

—

X

UP SW LEVER (ON-OFF display)

X

—

X

DOWN SW LEVER (ON-OFF display)

X

—

X

SFT UP ST SW (ON-OFF display)

—

—

X

Not mounted but displayed.

SFT DWN ST SW (ON-OFF display)

—

—

X

ASCD-CRUISE (ON-OFF display)

—

—

X

ASCD-OD CUT (ON-OFF display)

—

—

X

ABS SIGNAL (ON-OFF display)

—

—

X

ACC OD CUT (ON-OFF display)

—

—

X

ACC SIGNAL (ON-OFF display)

—

—

X

TCS SIGNAL 2 (ON-OFF display)

—

—

X

TCS GR/P KEEP (ON-OFF display)

—

—

X

TCS SIGNAL 1 (ON-OFF display)

—

—

X

TCC SOLENOID (A)

—

X

X

LINE PRES SOL (A)

—

X

X

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU INPUT 

SIGNALS

MAIN SIG-

NALS

SELEC-

TION FROM 

MENU