Infiniti QX56 (JA60). Manual - part 933

TM-34

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (TCM)

*1: Refer to 

EC-55, "Malfunction Indicator Lamp (MIL)"

.

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

DATA MONITOR MODE

Display Items List

 X: Standard, —: Not applicable

L C BRAKE SOLENOID

• TCM detects an improper voltage drop when it tries to 

operate 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.

P1774

P1774*2

TM-93

NO DTC IS DETECTED 
FURTHER TESTING 
MAY BE REQUIRED

• No NG item has been detected.

X

X

—

 Items (CONSULT-III 

screen terms)

Malfunction is detected when...

TCM self-di-

agnosis

OBD (DTC)

Reference

“TRANSMIS-

SION” with 

CONSULT-III

MIL indicator 
lamp*1, “EN-

GINE” with 

CONSULT-III or 

GST

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU IN-

PUT SIG-

NALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU

VHCL/S SE-A/T (km/h)

X

X

X

Output speed 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 recognized by 
the TCM.
For fail-safe operation, the specific value used 
for control is displayed.

CLSD THL POS (ON-OFF display)

X

—

X

Signal input with CAN communications.

W/O THL POS (ON-OFF display)

X

—

X

BRAKESW (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

—

INPUT SPEED (rpm) 

X

X

X

—

OUTPUT REV (rpm) 

X

X

X

—

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 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

—

ATF PRES SW 2 (ON-OFF display)

X

X

X

(for LC/B solenoid)

DIAGNOSIS SYSTEM (TCM)

TM-35

< FUNCTION DIAGNOSIS >

C

E

F

G

H

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J

K

L

M

A

B

TM

N

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ATF PRES SW 3 (ON-OFF display)

X

X

X

—

ATF PRES SW 5 (ON-OFF display)

X

X

X

—

ATF PRES SW 6 (ON-OFF display)

X

X

X

—

RANGE SW 1 (ON-OFF display)

X

—

X

—

RANGE SW 2 (ON-OFF display)

X

—

X

—

RANGE SW 3 (ON-OFF display)

X

—

X

—

RANGE SW 4 (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.

1 POSITION SW (ON-OFF display)

X

—

X

1st position switch

OD CONT SW (ON-OFF display)

X

—

X

4th position switch

POWERSHIFT SW (ON-OFF display)

X

—

X

Not mounted but displayed.

HOLD SW (ON-OFF display)

X

—

X

DS RANGE (ON-OFF display)

—

—

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

SFT DWN ST SW (ON-OFF display)

—

—

X

ASCD-OD CUT (ON-OFF display)

—

—

X

—

ASCD-CRUISE (ON-OFF display)

—

—

X

—

ABS SIGNAL (ON-OFF display)

—

—

X

—

ACC OD CUT (ON-OFF display)

—

—

X

ICC (Intelligent cruise control)

ACC SIGNAL (ON-OFF display)

—

—

X

TCS GR/P KEEP (ON-OFF display)

—

—

X

—

TCS SIGNAL 2 (ON-OFF display)

—

—

X

—

TCS SIGNAL 1 (ON-OFF display)

—

—

X

—

TCC SOLENOID (A)

—

X

X

—

LINE PRES SOL (A)

—

X

X

—

I/C SOLENOID (A)

—

X

X

—

FR/B SOLENOID (A)

—

X

X

—

D/C SOLENOID (A)

—

X

X

—

HLR/C SOL (A)

—

X

X

—

ON OFF SOL (ON-OFF display)

—

—

X

LC/B solenoid

TCC SOL MON (A)

—

—

X

—

L/P SOL MON (A)

—

—

X

—

I/C SOL MON (A)

—

—

X

—

FR/B SOL MON (A)

—

—

X

—

D/C SOL MON (A)

—

—

X

—

HLR/C SOL MON (A)

—

—

X

—

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU IN-

PUT SIG-

NALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU

TM-36

< FUNCTION DIAGNOSIS >

DIAGNOSIS SYSTEM (TCM)

ONOFF SOL MON (ON-OFF display)

—

—

X

LC/B solenoid

P POSI IND (ON-OFF display)

—

—

X

—

R POSI IND (ON-OFF display)

—

—

X

—

N POSI IND (ON-OFF display)

—

—

X

—

D POSI IND (ON-OFF display)

—

—

X

—

4TH POSI IND (ON-OFF display)

—

—

X

—

3RD POSI IND (ON-OFF display)

—

—

X

—

2ND POSI IND (ON-OFF display)

—

—

X

—

1ST POSI IND (ON-OFF display)

—

—

X

—

MANU MODE IND (ON-OFF display)

—

—

X

Not mounted but displayed.

POWER M LAMP (ON-OFF display)

—

—

X

F-SAFE IND/L (ON-OFF display)

—

—

X

—

ATF WARN LAMP (ON-OFF display)

—

—

X

—

BACK-UP LAMP (ON-OFF display)

—

—

X

—

STARTER RELAY (ON-OFF display)

—

—

X

—

RANGE SW3M (ON-OFF display)

—

—

X

—

C/V CLB ID1

—

—

X

—

C/V CLB ID2

—

—

X

—

C/V CLB ID3

—

—

X

—

UNIT CLB ID1

—

—

X

—

UNIT CLB ID2

—

—

X

—

UNIT CLB ID3

—

—

X

—

TRGT GR RATIO

—

—

X

—

TRGT PRES TCC (kPa)

—

—

X

—

TRGT PRES L/P (kPa)

—

—

X

—

TRGT PRES I/C (kPa)

—

—

X

—

TRGT PRE FR/B (kPa)

—

—

X

—

TRGT PRES D/C (kPa)

—

—

X

—

TRG PRE HLR/C (kPa)

—

—

X

—

SHIFT PATTERN

—

—

X

—

DRV CST JUDGE

—

—

X

—

START RLY MON

—

—

X

—

NEXT GR POSI

—

—

X

—

SHIFT MODE

—

—

X

—

MANU GR POSI

—

—

X

—

VEHICLE SPEED (km/h)

—

X

X

Vehicle speed recognized by the TCM.

Voltage (V) 

—

—

X

Displays the value measured by the voltage 
probe.

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU IN-

PUT SIG-

NALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU

DIAGNOSIS SYSTEM (TCM)

TM-37

< FUNCTION DIAGNOSIS >

C

E

F

G

H

I

J

K

L

M

A

B

TM

N

O

P

DTC & SRT CONFIRMATION

DTC Work Support Mode

Diagnosis Procedure without CONSULT-III

INFOID:0000000005148527

 OBD-II SELF-DIAGNOSTIC PROCEDURE (WITH GST)

Refer to 

EC-72, "Generic Scan Tool (GST) Function"

.

 OBD-II SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)

Refer to 

EC-55, "Malfunction Indicator Lamp (MIL)"

.

 TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)

Description

When the ignition switch is switched “ON”, the A/T CHECK indicator lamp lights up for 2 seconds. As a method

for locating the suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction

location is output and the A/T CHECK indicator lamp flashes to display the corresponding DTC.

Diagnostic Procedure

1.

CHECK A/T CHECK INDICATOR LAMP

1. Start the engine with selector lever in “P” position. Warm engine to normal operating temperature.

2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF position. 

3. Wait 10 seconds.

4. Turn ignition switch ON. (Do not start engine.)

Frequency (Hz)

—

—

X

The value measured by the pulse probe is dis-
played.

DUTY-HI (high) (%)

—

—

X

DUTY-LOW (low) (%)

—

—

X

PLS WIDTH-HI (ms) 

—

—

X

PLS WIDTH-LOW (ms) 

—

—

X

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU IN-

PUT SIG-

NALS

MAIN SIG-

NALS

SELEC-

TION 

FROM 
MENU

DTC work support item

Description

Check item

1ST GR FNCTN P0731

Following items for “1GR function ratio” be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed 

or not)

• Self-diagnosis result (OK or NG)

• Input clutch solenoid valve
• Front brake solenoid valve
• Direct clutch solenoid valve
• High and low reverse clutch 

solenoid valve 

• Each clutch 
• Hydraulic control circuit 

valve 

2ND GR FNCTN P0732

Following items for “2GR function ratio” be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed 

or not)

• Self-diagnosis result (OK or NG)

3RD GR FNCTN P0733

Following items for “3GR function ratio” be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed 

or not)

• Self-diagnosis result (OK or NG)

4TH GR FNCTN P0734

Following items for “4GR function ratio” be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed 

or not)

• Self-diagnosis result (OK or NG)

5TH GR FNCTN P0735

Following items for “5GR function ratio” be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed 

or not)

• Self-diagnosis result (OK or NG)