Nissan Altima HL32 Hybrid. Manual - part 618

P0A72-326, P0A72-328, P0A72-333, P0A72-515

HBC-221

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

If any DTCs indicating malfunctions in the current sensor circuit are output, overcurrent to the electric vehicle

fuse is suspected. In this case, replace the electric vehicle fuse installed on the service plug grip.

>> Replace service plug grip.

4.

CONNECT SECURELY

If any DTCs indicating malfunctions in the current sensor circuit are output, overcurrent to the electric vehicle

fuse is suspected. In this case, replace the electric vehicle fuse installed on the service plug grip.

>> Replace service plug grip.

HBC-222

< COMPONENT DIAGNOSIS >

P0A75-334, P0A75-336, P0A75-341, P0A75-516

P0A75-334, P0A75-336, P0A75-341, P0A75-516

Description

INFOID:0000000004211903

The inverter with converter assembly (MG ECU) monitors the inverter current sensor. The MG ECU detects

malfunctions in the sensor system and does not detect malfunctions in the high-voltage system.

DTC Logic

INFOID:0000000004211904

DTC DETECTION LOGIC

The hybrid vehicle control ECU monitors the generator inverter current sensor. If the hybrid vehicle control

ECU detects a fault, it will illuminate the MIL and set a DTC.

Diagnosis Procedure

INFOID:0000000004211905

1.

PRECONDITIONING

• 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. After removing the service plug grip, put it in your pocket to prevent

other technicians from accidentally reconnecting it while you are working on the high-voltage system.

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

connectors or terminals.

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

converter assembly.

>> GO TO 2.

2.

CHECK CONNECTOR CONNECTION CONDITION (INVERTER WITH CONVERTER ASSEMBLY CON-

NECTOR)
See 

HBC-109, "Diagnosis Procedure"

.

OK or NG

OK

>> GO TO 3.

NG

>> GO TO 4.

3.

REPLACE INVERTER WITH CONVERTER ASSEMBLY

DTC No.

INF Code

Trouble diagnosis name

DTC detecting condition

Possible cause

P0A72

326

Generator Phase V Current

Malfunction in generator inverter current 
sensor (phase V sub sensor)

• Inverter with converter assembly
• Service plug grip

P0A72

328

Generator Phase V Current

Malfunction in generator inverter current 
sensor (phase V main sensor)

• Inverter with converter assembly
• Service plug grip

P0A72

333

Generator Phase V Current

Malfunction in generator inverter current 
sensor (Performance problem or open 
phase V)

• Inverter with converter assembly
• Service plug grip

P0A72

515

Generator Phase V Current

Malfunction in generator inverter current 
sensor (phase V main and sub sensors 
offset)

• Inverter with converter assembly
• Service plug grip

P0A75

334

Generator Phase W Current

Malfunction in generator inverter current 
sensor (phase W sub sensor)

• Inverter with converter assembly
• Service plug grip

P0A75

336

Generator Phase W Current

Malfunction in generator inverter current 
sensor (phase W main sensor)

• Inverter with converter assembly
• Service plug grip

P0A75

341

Generator Phase W Current

Malfunction in generator inverter current 
sensor (Performance problem or open 
phase W)

• Inverter with converter assembly
• Service plug grip

P0A75

516

Generator Phase W Current

Malfunction in generator inverter current 
sensor (phase W main and sub sensors 
offset)

• Inverter with converter assembly
• Service plug grip

P0A75-334, P0A75-336, P0A75-341, P0A75-516

HBC-223

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBC

N

O

P

If any DTCs indicating malfunctions in the current sensor circuit are output, overcurrent to the electric vehicle

fuse is suspected. In this case, replace the electric vehicle fuse installed on the service plug grip.

>> Replace service plug grip.

4.

CONNECT SECURELY

If any DTCs indicating malfunctions in the current sensor circuit are output, overcurrent to the electric vehicle

fuse is suspected. In this case, replace the electric vehicle fuse installed on the service plug grip.

>> Replace service plug grip.

HBC-224

< COMPONENT DIAGNOSIS >

P0A78-113

P0A78-113

Description

INFOID:0000000004211906

The inverter converts high-voltage direct current from the HV battery and alternating current for MG2 and

MG1. The inverter contains a three-phase bridge circuit, which consists of six power transistors each for MG2

and MG1, that converts direct current to three-phase alternating current. The MG ECU controls the actuation

of the power transistors. The inverter transmits information that is necessary for effecting control, such as the

amperage and voltage, to the MG ECU.

The MG ECU uses a voltage sensor, which is built into the inverter, to detect boosted high voltage to allow

control of the voltage boost.

The inverter voltage sensor outputs voltage that varies between 0 and 5 V in accordance with the changes in

the high voltage. The higher the high voltage, the higher the output voltage, and the lower the high voltage, the

lower the output voltage.