Infiniti M45 (Y34). Manual - part 567

SERVICE INFORMATION FOR ELECTRICAL INCIDENT

GI-33

Control Unit Circuit Test

System Description:When the switch is ON, the control unit lights up the lamp.

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 1 does not detect battery voltage. Control unit
does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the
lamp.

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. 0V. 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.

MGI034A

No.

Item

Condition

Voltage

value [V]

In case of high resistance such as single strand [V] *

Switch

Switch ON

Battery voltage

Lower than battery voltage Approx. 8 (Example)

Switch OFF

Approx. 0

Lamp

Switch ON

Battery voltage

Approx. 0 (Inoperative lamp)

Switch OFF

Approx. 0

MGI035A

No.

Item

Condition

Voltage

value [V]

In case of high resistance such as single strand [V] *

Lamp

Switch ON

Approx. 0

Battery voltage (Inoperative lamp)

Switch OFF

Battery voltage

Switch

Switch ON

Approx. 0

Higher than 0 Approx. 4 (Example)

Switch OFF

Approx. 5

GI-34

SERVICE INFORMATION FOR ELECTRICAL INCIDENT

Control Units and Electrical Parts

AAS0007B

PRECAUTIONS

●

Never reverse polarity of battery terminals.

●

Install only parts specified for a vehicle.

●

Before replacing the control unit, check the input and output and
functions of the component parts.

●

Do not apply excessive force when disconnecting a connector.

●

If a connector is installed by tightening bolts, loosen bolt mount-
ing it, then take it out by hand.

●

Before installing a connector, make sure the terminal is not bent
or damaged, and then correctly connect it.
When installing a connector by tightening bolts, fix it by tighten-
ing the mounting bolt until the painted projection of the connec-
tor becomes even with the surface.

●

For removal of the lever type connector, pull the lever up to the
direction pointed to by the arrow A in the figure, and then
remove the connector.

●

For installation of the lever type connector, pull down the lever to
the direction pointed by the arrow B in the figure, and then push
the connector until a clicking noise is heard.

SAIA0251E

SAIA0252E

SAIA0253E

SAIA0254E

SERVICE INFORMATION FOR ELECTRICAL INCIDENT

GI-35

●

Do not apply excessive shock to the control unit by dropping or
hitting it.

●

Be careful to prevent condensation in the control unit due to
rapid temperature changes and do not let water or rain get on it.
If water is found in the control unit, dry it fully and then install it in
the vehicle.

●

Be careful not to let oil to get on the control unit connector.

●

Avoid cleaning the control unit with volatile oil.

●

Do not disassemble the control unit, and do not remove the
upper and lower covers.

●

When using a DMM, be careful not to let test probes get close to
each other to prevent the power transistor in the control unit
from damaging battery voltage because of short circuiting.

●

When checking input and output signals of the control unit, use
the specified check adapter.

SAIA0255E

SEF348N

GI-36

CONSULT-II CHECKING SYSTEM

PFP:00000

Description

AAS00065

●

CONSULT-II is a hand-held type tester. When it is connected with a diagnostic connector equipped on the
vehicle side, it will communicate with the control unit equipped in the vehicle and then enable various
kinds of diagnostic tests.

●

Refer to “CONSULT-II Software Operation Manual” for more information.

Function and System Application

AAS00066

x: Applicable

Nickel Metal Hydride Battery Replacement

AAS00067

CONSULT-II contains a nickel metal hydride battery. When replacing the battery obey the following:

WARNING:

Replace the nickel metal hydride battery with Genuine CONSULT-II battery only. Use of another bat-
tery may present a risk of fire or explosion. The battery may present a fire or chemical burn hazard if
mistreated. Do not recharge, disassemble or dispose of in fire.
Keep the battery out of reach of children and discard used battery conforming to the local regulations.

Diagnostic test

mode

Function

ENG

INE

A/T

R BAG

MUL

I A

VDC

ASCD

ICC

AIR PRESSURE

NIT

IVIS (NA

Work support

This mode enables a technician to adjust some devices faster and
more accurately by following the indications on CONSULT-II.

Self-diagnostic
results

Self-diagnostic results can be read and erased quickly.

Trouble diagnostic
record

Current self-diagnostic results and all trouble diagnostic records
previously stored can be read.

Data monitor

Input/Output data in the ECM can be read.

CAN diagnosis
support monitor

The communication condition of CAN communication line can be
indicated.

Active test

Diagnostic Test Mode in which CONSULT-II drives some actuators
apart from the ECMs and also shifts some parameters in a specified
range.

DTC confirmation

The results of SRT (System Readiness Test) and the self-diagnosis
status/result can be confirmed.

DTC work support

The operating condition to confirm Diagnosis Trouble Codes can be
selected.

ECM (ECU, TCM)
part number

ECM (ECU, TCM) part number can be read.

ECU discriminated
No.

Classification number of a replacement ECU can be read to prevent
an incorrect ECU from being installed.

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.

Control unit initial-
ization

All registered ignition key IDs in NATS components can be initialized
and new IDs can be registered.

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