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Nissan Altima HL32 Hybrid. Manual - part 156

PRECAUTIONS

BRC-189

< PRECAUTION >

[VDC/TCS/ABS]

BRC

PRECAUTION

PRECAUTIONS

Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"

INFOID:0000000004212764

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along

with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain

types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS

system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front

air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.

Information necessary to service the system safely is included in the SR and SB section of this Service Man-

ual.

WARNING:

• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision which would result in air bag inflation, all maintenance must be performed by

an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag

Module, see the SR section.

• Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this

Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-

ness connectors.

Precautions For High-Voltage System

INFOID:0000000004212765

Refer to

GI-24, "Precautions For High-Voltage System"

Precautions for Inspecting the Hybrid Control System

INFOID:0000000004212766

• Before inspecting the high-voltage system or disconnecting the low voltage connector of the inverter with

converter assembly, take safety precautions, such as wearing insulated gloves and removing the service

plug grip to prevent electrical shocks. Make sure to turn the ignition switch OFF before removing the service

plug grip. After removing the service plug grip, put it in your pocket to prevent other technicians from acci-

dentally reconnecting it while you are working on the high-voltage system.

NOTE:

Turning the ignition switch ON (READY) with the service plug grip removed could cause a malfunc-

tion. Do not turn the ignition switch ON (READY) unless instructed by the service manual.

• After disconnecting the service plug grip, wait for at least 10 minutes before touching any of the high-voltage

connectors or terminals.

NOTE:

Waiting for at least 10 minutes is required to discharge the high-voltage capacitor inside the inverter with

converter assembly.

ALCIA0007ZZ

BRC-190

< PRECAUTION >

[VDC/TCS/ABS]

PRECAUTIONS

• 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.

Electronically Controlled Brake System

INFOID:0000000004212767

CAUTION:

When disconnecting the negative battery terminal, initialize the following system after the terminal is

reconnected:

TROUBLESHOOTING PRECAUTIONS

1. When there is a malfunction with terminal contact points or part installation problems, removal and instal-

lation of the suspected problem parts may return the system to the normal condition either completely or

temporarily.

2. In order to determine the malfunctioning area, be sure to check the conditions at the time the malfunction

occurred, such as DTC output and the Freeze Frame Data, and record it before disconnecting each con-

nector or removing and installing parts.

3. Since the system may be influenced by malfunctions in systems other than the brake control system, be

sure to check for DTCs in order systems.

HANDLING PRECAUTIONS

1. Do not remove or install Electronically Controlled Brake parts such as the steering angle sensor, yaw rate/

side/decel G sensor or brake stroke sensor except when required, as they cannot be adjusted correctly

after removal or installation.

2. Be sure to perform preparation before work and confirmation after work is completed by following the

direction in the repair manual when working on the Electronically Controlled Brake system.

3. Be sure to remove and install the ECU, actuator, each sensor, etc. with the ignition switch OFF unless it is

not specified in the inspection procedure.

4. Be sure to remove the 2 main relays before removal and installation, or replacement of the Electronically

Controlled Brake parts.

5. The removal or installation of the actuator, master cylinder or stroke simulator as well as some other pro-

cedures can cause the fluid level to drop below the fluid reservoir port. If this happens when performing

such work, be sure to remove the 2 motor relays until the bleeding of the air in the pipeline is completed.

NOTE:

• When the pump motor is operated with the air in the brake actuator hose, bleeding the air becomes dif-

ficult due to air in the actuator.

• The brake ECU may operate the stroke simulator and drive the pump motor even when the ignition

switch OFF.

• With the ignition switch OFF, the brake ECU can be operated for 2 minutes after the brake operation is

finished.

6. Removal of the main relay and motor relay.
a. Wait for 2 minutes after turning the ignition switch OFF, stopping the brake pedal operation and closing the

driver door before removing the 2 relays.

NOTE:

The above situation occurs when the pump motor operates to prepare for the next operation just before

the brake control system turns OFF.

7. If the ECU, brake actuator, or a sensor has been removed and installed, it is necessary to check the sys-

tem for problems after the parts have been reassembled. Check for DTCs using the CONSULT-III, also

check that system functions and signals received by the ECU are normal using Test Mode.

DTC PRECAUTION

Warnings for some DTCs cannot be cleared only by repairing the malfunctioning parts. If the warning is dis-

played after repair work, the DTC should be cleared after turning the ignition switch OFF.

CAUTION:

If a DTC for a malfunctioning part reappears after it was cleared, then it has been stored again.

System

SFI system

PRECAUTIONS

BRC-191

< PRECAUTION >

[VDC/TCS/ABS]

BRC

CHASSIS DYNAMOMETER PRECAUTION

When checking with chassis dynamometer, place CONSULT-III in “INSPECTION MODE” to deactivate VDC

and TCS. Refer to

HBC-104, "MODE 1 : Diagnosis Description"

(MODE 1),

HBC-105, "MODE 2 : Diagnosis

Description"

(MODE 2).

NOTE:

The vehicle may move unexpectedly out of the dynamometer because of TCS and VDC operations.

CAUTION:

• Make sure that the brake control warning, master caution indicator lamps blink and “CHECK VDC

SYSTEM” is displayed on the multi information display (Test Mode is achieved).

• Secure the vehicle with the lock chain for safety.

CAN COMMUNICATION SYSTEM PRECAUTIONS

1. The CAN communication system is used for the data communication between the brake ECU, the steer-

ing angle sensor, the yaw rate/side/decel G sensor and other ECUs. If there is trouble in the CAN commu-

nication line, corresponding DTCs in the communication line are output.

2. If the DTC in the CAN communication line is output, repair the malfunction in the communication line and

troubleshoot the Electronically Controlled Brake system while data communication is normal.

3. In order to enable CAN communication, a specific type of wiring is used for the CAN communication lines.

The wiring is used for each communication line is a twisted pair of wires that have an equal length. A

bypass wire should not be used, because the data being transmitted will be corrupted.

BRC-192

< PREPARATION >

[VDC/TCS/ABS]

PREPARATION

PREPARATION

Special Service Tool

INFOID:0000000004212768

The actual shapes of Kent-Moore tools may be different from those of special service tools illustrated here.

Commercial Service Tool

INFOID:0000000004212769

Tool number
(Kent-Moore No.)
Tool name

Description

KV991V0010
(J-39528)
Brake fluid pressure tester

Brake fluid pressure measurement

JSFIA0073ZZ

Tool name

Description

1. Flare nut crowfoot
2. Torque wrench

Installing brake tube
a: 10 mm (0.39 in) / 12 mm (0.47 in)

Insulation groves

Guaranteed insulation performance for 1000V/
300A

S-NT360

JMCIA0149ZZ

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