Nissan Altima HL32 Hybrid. Manual - part 471

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PRECAUTIONS

PRECAUTION

PRECAUTIONS

Description

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Observe the following precautions to ensure safe and proper servicing. These precautions are not

described in each individual section.

Precautions For High-Voltage System

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PRECAUTION FOR HIGH-VOLTAGE CIRCUIT

NOTE:

The hybrid system contains a 244.8 V high-voltage system with a strong alkali solution of potassium hydrox-

ide. Be sure to follow the instructions in this manual to handle the system correctly. Failure to do so may result

in serious injury or electrocution.
1. Engineer must undergo special training to be able to perform high-voltage system inspection and servic-

ing.

2. High-voltage cables are colored orange. The HV battery and other high-voltage components have "high-

voltage" caution labels. Do not carelessly touch these wires and components.

3. Before inspecting or servicing the high-voltage system, be sure to follow safety measures, such as wear-

ing insulated gloves and removing the service plug to prevent electrocution. Carry the removed service

plug in your pocket to prevent other technicians from reinstalling it while your are servicing the vehicle.

NOTE:

• Before removing the service plug, confirm ignition switch off.

• Do not put the vehicle into the ON (READY) state after removing the service plug grip as the ECU may

be damaged.

ON (READY): The condition which the ready indicator lamp illuminates and vehicle is ready to be

driven.

• Turn the ignition switch off, wear insulated gloves, and disconnect the negative terminal of the auxiliary

battery before touching any of the orange-colored wires of the high-voltage system.

• Turn the ignition switch off before performing any resistance checks.

• Turn the ignition switch off before disconnecting or reconnecting any connectors.

4. After removing the service plug, wait 10 minutes before touching any of the high-voltage connectors and

terminals.

NOTE:

10 minutes are required to discharge the high-high-voltagevoltage condenser inside the inverter.

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5. Before wearing insulated gloves, make sure that they are not

cracked, ruptured, torn, or damaged in any way. Do not wear

wet insulated gloves.

6. When servicing the vehicle, do not carry metal objects like

mechanical pencils or scales that can be dropped accidentally

and cause a short circuit.

7. Before touching a bare high-voltage terminal, wear insulated

gloves and use a tester to make sure that the terminal voltage is

0 V.

8. After disconnecting or exposing a high-voltage connector or ter-

minal, insulate it immediately using insulation tape.

9. The screw of a high-voltage terminal should be tightened firmly to the specified torque. Both insufficient

and excessive torque can cause failure.

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PRECAUTIONS

10. Use the "CAUTION: high-voltage. DO NOT TOUCH DURING OPERATION" sign to notify other engineers

that a high-voltage system is being inspected and/or repaired.high-voltage

11. After servicing the high-voltage system and before reinstalling the service plug, check again that you have

not left a part or tool inside, that the high-voltage terminal screws are firmly tightened, and that the con-

nectors are correctly connected.high-voltage

12. Do not place the battery upside down while removing and installing it.

PERSONAL PROTECTIVE EQUIPMENT

When engaged in operations such as removal and installation related to high-voltage equipment, use personal

protective equipment to avoid death or serious personal injury from electric shock.

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The following table describes the personal protective gear.

*Commercial tools can be used for the above tools if the tools fulfill the specifications.

INSULATION RESISTANCE CHECK TOOL

When making an insulation resistance check, the tester which can measure the resistance with applying

1000V is necessary.

The following table describes the necessary tester.

PERSONAL PROTECTIVE EQUIPMENT CHECK

Inspect the personal protective equipment before use.

WARNING:

Personal protective equipment must not have abnormalities such as scratches and tears which will

influence the insulation performance.

INSULATION RESISTANCE CHECK OF INSULATION GLOVES

Check before starting work

Before wearing insulated gloves, check that gloves are not cracked,

ruptured, torn, or damaged by inflating.

Inspect insulation resistance of insulation gloves regularly (at least every six months)

1. Put the insulation glove into a water tank filled with water.
2. Pour water into the insulation glove.

NOTE:

Pour water into the glove so that water does not splash on the

sleeve of the glove. If water splash on the sleeve of the glove,

the insulation cannot be checked accurately because the conti-

nuity may exist through water for the insulation resistance check

even if the glove has no problems.

Tool name

Description

high-voltage (1000 V) natural rubber gloves

—

Leather cover gloves

Protect the high-voltage rubber gloves when handling the high-voltage battery

Safety glasses with side covers ANSI Z87.1

Safety goggles are required for eye protection. These should be worn whenever 
working on or around the HV battery and low-voltage battery.

Orange car top tag  "high-voltage"

—

Orange duct tape

Protecting the removed connectors of high-voltage components

High visibility barricade tape

—

Rubber mat (work bench cover)

Protection mat to be put between the technicians and the vehicle

ABC Chemical extinguisher

—

Rubber apron

The active agent in the high-voltage battery is a strong alkaline and very caustic. 
Wear a rubberized apron for additional protection when handling the high-volt-
age battery.

Insulation shoes*

—

Tool name

Description

Insulation Resistance Tester

Resistance measurement
Performance for applying 1000 V

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