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Infiniti QX56 (Z62). Manual - part 1289

DIAGNOSIS SYSTEM (TCM)

TM-65

< SYSTEM DESCRIPTION >

[7AT: RE7R01B]

ASCD-OD CUT

(ON/OFF)

—

Displays the reception status of ASCD OD can-
cel request signal received via CAN communi-
cation.

ASCD-CRUISE

(ON/OFF)

—

Displays the reception status of ASCD opera-
tion signal received via CAN communication.

ABS SIGNAL

(ON/OFF)

—

Displays the reception status of ABS operation
signal received via CAN communication.

TCS GR/P KEEP

(ON/OFF)

—

Displays the reception status of TCS gear keep
request signal received via CAN communica-
tion.

TCS SIGNAL 2

(ON/OFF)

—

Displays whether the reception value of A/T
shift schedule change demand signal received
via CAN communication is “cold”.

TCS SIGNAL 1

(ON/OFF)

—

Displays whether the reception value of A/T
shift schedule change demand signal received
via CAN communication is “warm”.

LOW/B PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of low
brake.

HC/IC/FRB PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of high
and low reversed clutch, input clutch or front
brake.

IC/FRB PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of input
clutch or front brake.

HLR/C PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of high
and low reversed clutch.

W/O THL POS

(ON/OFF)

—

Displays the kickdown condition signal status
received via CAN communication.

CLSD THL POS

(ON/OFF)

—

Displays the idling status signal status received
via CAN communication.

DRV CST JUDGE

(DRIVE/COAST)

—

Displays the judgment results of “driving” or
“coasting” judged by TCM.

SHIFT IND SIGNAL

—

Displays the transmission value of shift position
signal transmitted via CAN communication.

STARTER RELAY

(ON/OFF)

—

Displays the command status from TCM to
starter relay.

F-SAFE IND/L

(ON/OFF)

—

Displays the transmission status of A/T CHECK
indicator lamp signal transmitted via CAN com-
munication.

ATF WARN LAMP

(ON/OFF)

—

Displays the transmission status of ATF tem-
perature signal transmitted via CAN communi-
cation.

MANU MODE IND

(ON/OFF)

—

Displays the transmission status of manual
mode signal transmitted via CAN communica-
tion.

ON OFF SOL MON

(ON/OFF)

—

Monitors the command value from TCM to the
anti-interlock solenoid, and displays the moni-
tor status.

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU IN-

PUT SIG-

NALS

MAIN SIG-

NALS

SELEC-

TION

FROM

ITEM

TM-66

< SYSTEM DESCRIPTION >

[7AT: RE7R01B]

DIAGNOSIS SYSTEM (TCM)

DTC & SRT CONFIRMATION

START RLY MON

(ON/OFF)

—

Monitors the command value from TCM to the
starter relay, and displays the monitor status.

ON OFF SOL

(ON/OFF)

—

Displays the command status from TCM to anti-
interlock solenoid.

SLCT LVR POSI

—

Displays the shift positions recognized by TCM.

GEAR

—

Displays the current transmission gear position
recognized by TCM.

NEXT GR POSI

—

Displays the target gear position of gear
change that is calculated based on the vehicle
speed information and throttle information.

SHIFT MODE

—

Displays the transmission driving mode recog-
nized by TCM.

D/C PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of di-
rect clutch.

FR/B PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of front
brake.

2346/B PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of 2346
brake.

2346B/DC PARTS

(FAIL/NOTFAIL)

—

Displays whether the identified malfunction
point judged by TCM is the related parts of 2346
brake or direct clutch.

N IDLE STATUS

(ON/OFF)

—

Displays the control status of idle neutral con-
trol.

Monitored item (Unit)

Monitor Item Selection

Remarks

ECU IN-

PUT SIG-

NALS

MAIN SIG-

NALS

SELEC-

TION

FROM

ITEM

DIAGNOSIS SYSTEM (TCM)

TM-67

< SYSTEM DESCRIPTION >

[7AT: RE7R01B]

Item name

Description

Check item

1ST GR FNCTN P0731

Following items for “1GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

• Input clutch solenoid

valve

• Front brake solenoid

valve

• Direct clutch solenoid

valve

• High and low reverse

clutch solenoid valve

• Low brake solenoid

valve

• 2346 brake solenoid

valve

• Anti-interlock sole-

noid valve

• Each clutch and brake
• Output speed sensor
• Input speed sensor 1,

• Hydraulic control cir-

cuit

2ND GR FNCTN P0732

Following items for “2GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

3RD GR FNCTN P0733

Following items for “3GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

4TH GR FNCTN P0734

Following items for “4GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

5TH GR FNCTN P0735

Following items for “5GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

6TH GR FNCTN P0729

Following items for “6GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

7TH GR FNCTN P1734

Following items for “7GR incorrect ratio” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

TCC SOL FUNCTN CHECK

Following items for “TCC solenoid function” can be confirmed.
• Self-diagnosis status (whether the diagnosis is being performed or not)
• Self-diagnostic results (OK or NG)

• Harness or connec-

tors

• Torque converter

clutch solenoid valve

• Torque converter
• Input speed sensor 1,

• Hydraulic control cir-

cuit

TM-68

< ECU DIAGNOSIS INFORMATION >

[7AT: RE7R01B]

TCM

ECU DIAGNOSIS INFORMATION

TCM

Reference Value

INFOID:0000000006226782

VALUES ON DIAGNOSIS TOOL

NOTE:
1.

The CONSULT-III electrically displays shift timing and lock-up timing (that is, operation timing of each
solenoid).
Check for time difference between actual shift timing and the CONSULT-III display. If the difference is
noticeable, mechanical parts (except solenoids, sensors, etc.) may be malfunctioning. Check mechanical
parts in accordance with the specified diagnostic procedures.

Shift schedule (that implies gear position) on CONSULT-III may slightly differ from that is described in Ser-
vice Manual. This occurs because of the reasons as per the following:

Actual shift schedule has more or less tolerance or allowance

Shift schedule in Service Manual refers to the point where shifting starts

Gear position on CONSULT-III indicates the point where shifting completes

Display of solenoid valves on CONSULT-III changes at the start of shifting, while gear position is displayed
upon completion of shifting (which is computed by TCM).

CONSULT-III MONITOR ITEM

Item name

Condition

Value / Status (Approx.)

VHCL/S SE-A/T

During driving

Approximately equals the speed-
ometer reading.

ESTM VSP SIG

During driving

Approximately equals the speed-
ometer reading.

OUTPUT REV

During driving (lock-up ON)

Tachometer / Gear ratio

INPUT SPEED

During driving (lock-up ON)

Approximately equals the engine
speed.

F SUN GR REV

During driving

Revolution of front sun gear is indi-
cated.

F CARR GR REV

During driving

Revolution of front carrier is indi-
cated.

ENGINE SPEED

Engine running

Closely equals the tachometer
reading.

TC SLIP SPEED

During driving

Engine speed

−

Input speed

ACCELE POSI

Accelerator pedal is released

0.0/8

Accelerator pedal is fully depressed

8.0/8

THROTTLE POSI

Accelerator pedal is released

0.0/8

Accelerator pedal is fully depressed

8.0/8

ATF TEMP 1

Ignition switch ON

Temperature of ATF in the oil pan is
indicated.

ATF TEMP 2

Ignition switch ON

Temperature of ATF at the exit of
torque converter.

ATF TEMP SE 1

C (32

F) – 20

C (68

F) – 80

C (176

3.3 – 2.7 – 0.9 V

BATTERY VOLT

Ignition switch ON

Battery voltage (11 V – 14 V)

LINE PRES SOL

During driving

0.2 – 0.6 A

TCC SOLENOID

Slip lock-up is active

0.2 – 0.8 A

Lock-up is active

0.8 A

Other than the above

0 A

L/B SOLENOID

Low brake is engaged

0.6 – 0.8 A

Low brake is disengaged

0 – 0.05 A

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