Nissan Altima HL32 Hybrid. Manual - part 552

 

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Nissan Altima HL32 Hybrid. Manual - part 552

 

 

P0AAC-123

HBB-65

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBB

N

O

P

OK or NG

OK

>> Replace battery smart unit. (Refer to 

HBB-101, "Removal and Installation"

).

NG

>> Replace HV battery. (Refer to 

HBB-97, "Removal and Installation"

).

Battery smart unit

Battery smart unit

Resistance

Connector

Terminal

Connector

Terminal

TB0

IGCT

10 k

Ω or higher

GB0

TB1

GB1

TB2

GB2

TB3

GB3

TC0

GC0

TB0

GND

TB1

TB2

TB3

TC0

HBB-66

< COMPONENT DIAGNOSIS >

P0ABF-123, P0AC1-123, P0AC2-123

P0ABF-123, P0AC1-123, P0AC2-123

Description

INFOID:0000000004212279

The battery current sensor, which is mounted on the positive cable side of the HV battery, detects the amper-

age that flows to and from the HV battery. The battery smart unit receives a voltage of between 0 and 5 V that

is in proportion to the amperage flowing in the cable. This voltage goes into the IB terminal from the battery

current sensor. A battery current sensor output voltage below 2.5 V indicates that the HV battery is being

charged, and a voltage above 2.5 V indicates that the HV battery is being discharged. The hybrid vehicle con-

trol ECU determines the amount of either charge or discharge amperage that is being received by the HV bat-

tery based on the signals that are input to terminal IB of the battery smart unit from the battery current sensor.

The hybrid vehicle control ECU also calculates the SOC (state of charge) of the HV battery based on the accu-

mulated amperage.

DTC Logic

INFOID:0000000004212280

DTC DETECTION LOGIC

If the battery smart unit detects a malfunction in the battery current sensor, the hybrid vehicle control ECU will

illuminate the MIL and set a DTC.

JMCIA0090GB

JMCIA0112GB

P0ABF-123, P0AC1-123, P0AC2-123

HBB-67

< COMPONENT DIAGNOSIS >

D

E

F

G

H

I

J

K

L

M

A

B

HBB

N

O

P

Diagnosis Procedure

INFOID:0000000004212281

1.

PRECONDITIONING

• Before inspecting the high-voltage system, 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-volt-

age 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 FOR DTC (DTC P0A1F-123 IS OUTPUT)

1. Turn ignition switch ON.

2. Check DTC.
Is DTC P0A1F-123 detected?

YES

>> Go to Diagnosis Procedure relevant to output DTC.

NO

>> GO TO 3.

3.

CHECK HARNESS AND CONNECTOR (SMARAT BATTERY UNIT - BATTERY CURRENT SENSOR)

CAUTION:

Be sure to wear insulated gloves.

1. Turn ignition switch OFF.

2. Remove the service plug grip (Refer to 

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

).

3. Remove the HV relay assembly (Refer to 

HBB-105, "Removal and Installation"

).

4. Disconnect the battery smart unit harness connector.

DTC No.

INF code

Trouble diagnosis name

DTC detecting condition

Possible cause

P0ABF

123

Hybrid battery pack current 
sensor circuit

When the battery current sensor output 
is too low or high due to VIB/GIB failure

• HV relay assembly (battery current 

sensor)

• Battery smart unit
• Wire harness or connector

P0AC1

123

Hybrid battery pack current 
sensor circuit low

When the battery current sensor output 
is too low or high due to IB failure

P0AC2

123

Hybrid battery pack current 
sensor circuit high

HBB-68

< COMPONENT DIAGNOSIS >

P0ABF-123, P0AC1-123, P0AC2-123

5. Measure the resistance according to the value(s) in the table

below.

NOTE:

The wire harness is not available separately. If it cannot be repaired, replace the HV battery.

OK or NG

OK

>> GO TO 4.

NG

>> Repair or replace harness or connector.

4.

CHECK BATTERY SMART UNIT (VIB VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

1. Connect the battery smart unit harness connector.

2. Install the battery carrier. (Refer to 

HBB-105, "Removal and Installation"

).

3. Connect the auxiliary battery positive terminal cable of the frame wire. (Refer to 

HBC-648, "Removal and

Installation"

).

4. Turn ignition switch ON.

5. Measure the voltage according to the value(s) in the table below.

NOTE:

If ignition switch is turned ON with the service plug grip

removed, DTC P0A0D-350 for the interlock switch system will

be set.

OK or NG

OK

>> GO TO 5.

NG

>> Replace battery smart unit. (Refer to 

HBB-101, "Removal and Installation"

).

5.

CHECK BATTERY SMART UNIT (IB VOLTAGE)

CAUTION:

Be sure to wear insulated gloves.

Battery smart unit

HV relay assembly 

(Battery current sensor)

Resistance

Connector

Terminal

Connector

Terminal

IB

IB

Below 1

GIB

GIB

VIB

VIB

Battery smart unit

Ground

Resistance

Connector

Terminal

IB

Ground

10 k

Ω or higher

GIB

VIB

HV relay assembly 

(Battery current sensor)

Ground

Resistance

Connector

Terminal

IB

Ground

10 k

Ω or higher

GIB

VIB

JMCIA0117GB

Battery smart unit

Battery smart unit

Voltage

Connector

Terminal

Connector

Terminal

VIB

GIB

4.6 to 5.4V

JMCIA0328GB

 

 

 

 

 

 

 

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