Infiniti G35 (V35). Manual — part 527
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
GI-33
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If repairs are needed always use wire that is of the same or larger gauge.
MEASURING VOLTAGE DROP — ACCUMULATED METHOD
●
Connect the DMM across the connector or part of the circuit you want to check. The positive lead of the
DMM should be closer to power and the negative lead closer to ground.
●
Operate the circuit.
●
The DMM will indicate how many volts are being used to “push” current through that part of the circuit.
Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb.
MEASURING VOLTAGE DROP — STEP-BY-STEP
The step-by-step method is most useful for isolating excessive drops in low voltage systems (such as those in
“Computer Controlled Systems”).
Circuits in the “Computer Controlled System” operate on very low amperage.
The (Computer Controlled) system operations can be adversely affected by any variation in resistance in the
system. Such resistance variation may be caused by poor connection, improper installation, improper wire
gauge or corrosion.
The step by step voltage drop test can identify a component or wire with too much resistance.
SGI974
SAIA0258E
GI-34
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
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
Pin
No.
Item
Condition
Voltage
value [V]
In case of high resistance such as single strand [V] *
1
Switch
Switch ON
Battery voltage
Lower than battery voltage Approx. 8 (Example)
Switch OFF
Approx. 0
Approx. 0
2
Lamp
Switch ON
Battery voltage
Approx. 0 (Inoperative lamp)
Switch OFF
Approx. 0
Approx. 0
MGI035A
Pin
No.
Item
Condition
Voltage
value [V]
In case of high resistance such as single strand [V] *
1
Lamp
Switch ON
Approx. 0
Battery voltage (Inoperative lamp)
Switch OFF
Battery voltage
Battery voltage
2
Switch
Switch ON
Approx. 0
Higher than 0 Approx. 4 (Example)
Switch OFF
Approx. 5
Approx. 5
SERVICE INFORMATION FOR ELECTRICAL INCIDENT
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Control Units and Electrical Parts
NAS0009P
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.
●
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
CONSULT-II CHECKING SYSTEM
PFP:00000
Description
NAS0001U
●
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
NAS0001V
x: Applicable
*: IVIS (NATS) [INFINITI Vehicle Immobilizer System (Nissan Anti-theft System)]
Nickel Metal Hydride Battery Replacement
NAS0001W
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
AB
S (
In
c
ludi
ng
VD
C
)
AI
R BAG
BC
M
IV
IS (
N
A
T
S)*
IPDM
E/R
4
W
AS(
M
A
IN)
/RAS/HI
CAS
AUT
O
DRIVE
POS.
INTEL
L
IGENT KEY
Work support
This mode enables a technician to adjust some devices
faster and more accurately by following the indications on
CONSULT-II.
x
-
x
-
x
-
-
-
-
x
Self-diagnostic results
Self-diagnostic results can be read and erased quickly.
x
x
x
x
x
x
x
x
x
x
Trouble diagnostic
record
Current self-diagnostic results and all trouble diagnostic
records previously stored can be read.
-
-
-
x
-
-
-
-
-
-
Data monitor
Input/Output data in the ECU can be read.
x
x
x
-
x
-
x
x
x
x
Data monitor (spec)
Data monitor specification can be read.
x
-
-
-
-
-
-
-
-
-
CAN diagnosis sup-
port monitor
The condition of CAN communication line can be read.
x
x
x
-
x
-
x
x
x
x
Active test
Diagnostic Test Mode in which CONSULT-II drives some
actuators apart from the ECUs and also shifts some param-
eters in a specified range.
x
-
x
-
x
-
x
x
x
x
DTC & SRT confirma-
tion
The results of SRT (System Readiness Test) and the self-
diagnosis status/result can be confirmed.
x
-
-
-
-
-
-
-
-
-
DTC work support
The operating condition to confirm Diagnosis Trouble Codes
can be selected.
x
x
-
-
-
-
-
-
-
-
ECU(ECM/TCM) part
number
ECU(ECM/TCM) part number can be read.
x
x
x
-
x
-
-
x
x
x
ECU discriminated
No.
Classification number of a replacement ECU can be read to
prevent an incorrect ECU from being installed.
-
-
-
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 avail-
able.
x
x
x
x
-
-
-
-
-
-
Control unit initializa-
tion
All registered ignition key IDs in NATS components can be
initialized and new IDs can be registered.
-
-
-
-
-
x
-
-
-
-
Configuration —
-
-
-
-
x
-
-
-
-
-
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