Nissan Altima HL32 Hybrid. Manual - part 576

COOLING SYSTEM FOR INVERTER, MG1 AND MG2

HBC-53

< FUNCTION DIAGNOSIS >

D

E

F

G

H

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A

B

HBC

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1.

Inverter with converter assembly

2.

Water pump with motor & bracket as-
sembly

3.

High voltage fuse and fusible link box
A: HV CONT MAIN fuse 10A
B: IGCT relay
C: IGCT fusible link 50A
D: DC/DC fusible link 120A

4.

HV battery

5.

Auxiliary battery

6.

Frame wire

7.

Hybrid vehicle control ECU
(located under heater box assembly)

8.

Brake ECU

9.

Electric compressor (For A/C)

10. A: Crankshaft position sensor

B: Axle

11. ECM

Vehicle front

ALCIA0009ZZ

HBC-54

< FUNCTION DIAGNOSIS >

COOLING SYSTEM FOR INVERTER, MG1 AND MG2

1.

Cover

2.

Compressor fuse cover

3.

MG1 connector

4.

MG2 connector

5.

Generator resolver and generator 
temperature sensor

6.

Park/Neutral position (PNP) switch

7.

Motor resolver

8.

Motor temperature sensor

9.

Hybrid transaxle (MG1, MG2, motor 
speed reduction planetary gear unit, 
power split planetary gear unit)

10. Inverter with converter assembly 

connector (MG ECU)

11. Inverter with converter assembly 

connector (Resolver)

12. Inverter with converter assembly 

(Boost converter, inverter, MG ECU)

AWCIA0014ZZ

COOLING SYSTEM FOR INVERTER, MG1 AND MG2

HBC-55

< FUNCTION DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

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P

1.

Service plug grip

2.

Battery temperature sensor 0

3.

Battery smart unit

4.

SMRG

5.

SMRB

6.

Battery current sensor

7.

Hybrid vehicle converter

8.

Battery temperature sensor 3

9.

Intake air temperature sensor

10. Battery temperature sensor 2

11. Battery temperature sensor 1

ALCIA0004ZZ

HBC-56

< FUNCTION DIAGNOSIS >

BRAKE CONTROL

BRAKE CONTROL

System Diagram

INFOID:0000000004211744

System Description

INFOID:0000000004211745

• The brake ECU calculates the total braking force needed, based on the master cylinder pressure in the

brake actuator and brake pedal stroke sensor generated when the driver depresses the brake pedal.

• The brake ECU computes a part for the required regeneration brake force from the total braking force, and

sends the result to the hybrid vehicle control ECU.

• The hybrid vehicle control ECU executes to the minus torque to MG2, and carries out the regenerative brake

functions.

The brake ECU controls the brake actuator solenoid valves and generates the wheel cylinder pressure,

which is the actual regenerative brake control value subtracted from the total braking force.

• The brake ECU outputs a request to the hybrid vehicle control ECU to effect motor traction control while the

vehicle is operating under TCS function control. The hybrid vehicle control ECU controls the engine, MG1,

and MG2 in accordance with the present driving conditions in order to suppress the motive force.

JMCIA0080GB