Infiniti QX56 (Z62). Manual - part 754

CONSULT-III/GST CHECKING SYSTEM

GI-49

< BASIC INSPECTION >

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x: Applicable

*1: If GST application is equipped, functions in accordance with SAE J1979 and ISO 15031-5 can be used.

Active Test

Send the 
drive signal 
from CON-
SULT-III to 
the actuator. 
The opera-
tion check 
can be per-
formed.

x

-

-

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-

x

x

x

x

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x

x

x

x

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x

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x

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DTC & SRT 
confirmation

The status of 
system moni-
toring tests 
and the self-
diagnosis 
status/result 
can be con-
firmed.

x

x

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ECU Identifica-
tion

Display the 
ECU identifi-
cation num-
ber (part 
number etc.) 
of the select-
ed system.

x

x

x

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x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

x

Function Test

This mode 
can show re-
sults of self-
diagnosis of 
ECU with ei-
ther “OK” or 
“NG”. For en-
gine, more 
practical 
tests regard-
ing sensors/
switches and/
or actuators 
are available.

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Configuration

Function to 
READ/
WRITE vehi-
cle configura-
tion.

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x

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x

Special 
Function

Other results 
or histories, 
etc. that are 
recorded in 
ECU are dis-
played.

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x

x

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Diagnostic test 

mode

Function

ENGINE

TRANSMISSION

AIR BAG

METER/M

&

A

AUT

O

 BACK DOOR

BCM

AUT

O

 DRIV

E POS.

ABS

IP

DM E/

R

ALL MODE A

W

D/4WD

MUL

T

I A

V

ICC/ADAS

SONAR

AIR P

R

E

SSURE MO

NIT

O

R

AFS (ADAP

T

IVE 

LIGHT)

PRECRASH SEA

T 

BEL

T

HV

AC

LASER

LANE CAMERA

ACCELE

 PEDAL ACT

E–SUS

S

IDE RADAR LEFT

S

IDE RADAR RIGHT

CA

N

 G

A

TE

W

A

Y

GI-50

< BASIC INSPECTION >

CONSULT-III/GST CHECKING SYSTEM

CONSULT-III/GST Data Link Connector (DLC) Circuit

INFOID:0000000006280858

INSPECTION PROCEDURE

If the CONSULT-III/GST cannot diagnose the system properly, check the following items.

NOTE:
The DDL1 and DDL2 circuits from DLC pins 12, 13, 14 and 15 may be connected to more than one system. A
short in a DDL circuit connected to a control unit in one system may affect CONSULT-III access to other sys-
tems.
If the GST cannot operate properly, check the circuit based on the information of SAE J1962 and ISO 15031-
3.

Symptom

Check item

CONSULT-III/GST cannot ac-
cess any system.

• CONSULT-III/GST DLC power supply circuit (Terminal 8 and 16) and ground circuit (Terminal 4 and 

5) 

CONSULT-III cannot access in-
dividual system. (Other sys-
tems can be accessed.)

• Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring 

diagram for each system.)

• Open or short circuit between the system and CONSULT-III DLC (For detailed circuit, refer to wiring 

diagram for each system.)

• Open or short circuit CAN communication line. Refer to 

LAN-18, "Trouble Diagnosis Flow Chart"

.

CONSULT-III/GST CHECKING SYSTEM

GI-51

< BASIC INSPECTION >

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Wiring Diagram - CONSULT-III/GST CHECKING SYSTEM -

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WITH ICC

JCAWM0358GB

GI-52

< BASIC INSPECTION >

CONSULT-III/GST CHECKING SYSTEM

JCAWM0359GB