Nissan March K13. Instruction — part 348

GI-40

< BASIC INSPECTION >

SERVICE INFORMATION FOR ELECTRICAL INCIDENT

CASE 2

INPUT-OUTPUT VOLTAGE CHART

• The voltage value is based on the body ground.

• *: If high resistance exists in the switch side circuit (caused by a single strand), terminal 2 does not detect approx. 0 V. Control unit

does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not control ground to light up the
lamp.

Terminal No.

Description

Condition

Value (Approx.)

In case of high resistance such as single
strand (V) *

+

−

Signal name

Input/

Output

1

Body
ground

Lamp

Output

Switch ON

0 V

Battery voltage (Inoperative lamp)

Switch OFF

Battery voltage

Battery voltage

2

Body
ground

Switch

Input

Switch ON

0 V

Higher than 0 Approx. 4 (Example)

Switch OFF

5 V

Approx. 5

MGI035A

CONSULT-III/GST CHECKING SYSTEM

GI-41

< BASIC INSPECTION >

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CONSULT-III/GST CHECKING SYSTEM

Description

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• When CONSULT-III/GST is connected with a data link connector

(A) equipped on the vehicle side, it will communicate with the con-
trol unit equipped in the vehicle and then enable various kinds of
diagnostic tests.

• Refer to “CONSULT-III Software Operation Instruction” for more infor-

mation.

CONSULT-III Function and System Application*1

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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.

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

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INSPECTION PROCEDURE

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

1

: Instrument lower panel LH

JPAIA0768ZZ

Diagnostic test mode

Function

ENGINE

AI

R BAG

METER/

M&A

BCM

IPDM

E/R

EP

S

Work support

This mode enables a technician to adjust some devices faster and
more accurately.

x

-

-

x

-

-

Self Diagnostic Results

Retrieve DTC from ECU and display diagnostic items.

x

x

x

x

x

x

Data monitor

Monitor the input/output signal of the control unit in real time.

x

-

x

x

x

x

CAN diagnosis

This mode displays a network diagnosis result about CAN by a dia-
gram.

x

-

x

x

x

x

CAN diagnosis support moni-
tor

It monitors the status of CAN communication.

x

-

x

x

x

x

Active test

Send the drive signal from CONSULT-III to the actuator. The operation
check can be performed.

x

-

-

x

x

-

DTC & SRT confirmation

The status of system monitoring tests and the self-diagnosis status/re-
sult can be confirmed.

x

-

-

-

-

-

ECU Identification

Display the ECU identification number (part number etc.) of the select-
ed system.

x

x

-

x

x

x

Function test

This mode can show results of self-diagnosis of ECU with either “OK”
or “NG”. For engines, more practical tests regarding sensors/switches
and/or actuators are available.

x

x

-

-

-

-

Configuration

Function to READ/WRITE vehicle configuration.

-

-

-

x

-

-

Special Function

Other results or histories, etc. that are recorded in ECU are displayed.

-

x

x

-

-

-

GI-42

< BASIC INSPECTION >

CONSULT-III/GST CHECKING SYSTEM

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-14, "Trouble Diagnosis Flow Chart"

.

CONSULT-III/GST CHECKING SYSTEM

GI-43

< BASIC INSPECTION >

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Wiring Diagram - CONSULT-III/GST CHECKING SYSTEM -

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JCAWM0228GB