Nissan Altima HL32 Hybrid. Manual - part 510

 

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Nissan Altima HL32 Hybrid. Manual - part 510

 

 

B2640, B2641, B2642 ELECTRIC COMPRESSOR

HAC-61

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

1. Disconnect the connector from the MG ECU.

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

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace MG ECU. 

5.

MG ECU CIRCUIT

1. Disconnect electric compressor connector.

CAUTION:

Be sure to wear insulated gloves.

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

Is the inspection result normal?

YES

>> Replace electric compressor. Refer to 

HA-31, "Removal and Installation"

.

NO

>> Repair harness or connector.

MG ECU

Condition

Resistance (

Ω)

 Connector

 Terminal

 Connector

 Terminal

F250

11

F225

1

Always

Below 1.0

12

2

Electric compressor

MG ECU

Condition

Resistance (

Ω)

 Connector

 Terminal

 Connector

 Terminal

F252

7

F250

12

Always

Below 1.0

8

11

HAC-62

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

B2643, B2644 ELECTRIC COMPRESSOR

B2643, B2644 ELECTRIC COMPRESSOR

Description

INFOID:0000000004215341

The inverter in the electric compressor outputs high-voltage to operate the motor. If there is an open or short in

the output circuit, the inverter in the electric compressor will stop compressor operation and output the DTC.

The output DTC will be memorized as a past and present DTC. Compressor control may not resume unless

the ignition switch is turned OFF, and waiting for 10 minutes.

CAUTION:

• Wear electrically insulated gloves and pull out the service plug grip before inspection as procedures

may require disconnecting high-voltage connectors. Be sure to carry the removed service plug grip

because other workers may install it by mistake.

• Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is

removed.

DTC Logic

INFOID:0000000004215342

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY) and wait at least 5 seconds.

2. Check DTC.
Is DTC detected?

YES

>> Go to Diagnosis Procedure. 

HAC-62, "Diagnosis Procedure"

.

NO

>> END.

Diagnosis Procedure

INFOID:0000000004215343

CAUTION:

• Wear electrically insulated gloves and pull out the service plug grip before inspection as procedures

may require disconnecting high-voltage connectors. Be sure to carry the removed service plug grip

because other workers may install it by mistake.

• Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is

removed.

1.

CHECK CAN COMMUNICATION SYSTEM

Use the CONSULT-III to check if the CAN Communication System is functioning normally.
Is CAN DTC detected?

YES

>> Check CAN communication. Refer to 

LAN-16, "Trouble Diagnosis Flow Chart"

.

NO

>> Replace electric compressor. Refer to 

HA-31, "Removal and Installation"

.

DTC No.

Trouble Diagnosis Name

DTC Detecting Condition

Possible Cause

B2643

OUTPUT LINE
SHORT

• After READY and A/C ON
• Open or short in A/C inverter high voltage output 

system.

• Electric compressor
• CAN communication system

B2644

OUTPUT LINE
OPEN

B2645, B2653 ELECTRIC COMPRESSOR

HAC-63

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B2645, B2653 ELECTRIC COMPRESSOR

Description

INFOID:0000000004215344

CAUTION:

• Wear electrically insulated gloves and pull out the service plug grip before inspection as procedures

may require disconnecting high-voltage connectors. Be sure to carry the removed service plug grip

because other workers may install it by mistake.

• Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is

removed.

DTC Logic

INFOID:0000000004215345

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY) and wait at least 5 seconds.

2. Check DTC.
Is DTC detected?

YES

>> Go to Diagnosis Procedure. 

HAC-63, "Diagnosis Procedure"

.

NO

>> END.

Diagnosis Procedure

INFOID:0000000004215346

CAUTION:

• Wear electrically insulated gloves and pull out the service plug grip before inspection as procedures

may require disconnecting high-voltage connectors. Be sure to carry the removed service plug grip

because other workers may install it by mistake.

• Do not touch the high-voltage connectors or terminals for 10 minutes after the service plug grip is

removed.

1.

CHECK CAN COMMUNICATION SYSTEM

Use the CONSULT-III to check if the CAN Communication System is functioning normally.
Is CAN DTC detected?

YES

>> Check CAN communication. Refer to 

LAN-16, "Trouble Diagnosis Flow Chart"

.

NO

>> Replace electric compressor. Refer to 

HA-31, "Removal and Installation"

.

DTC No.

Trouble Diagnosis Name

DTC Detecting Condition

Possible Cause

B2645

CURRENT MALFUNCTN

• After READY and A/C ON
• A/C inverter malfunction.

• Electric compressor
• CAN communication system

B2653

THARMO FAIL

HAC-64

< COMPONENT DIAGNOSIS >

[AUTOMATIC AIR CONDITIONER]

B2646, B2647, B2648, B2649, B264A, B264C, B264D ELECTRIC COMPRESSOR

B2646, B2647, B2648, B2649, B264A, B264C, B264D ELECTRIC COM-
PRESSOR

Description

INFOID:0000000004215347

The electric compressor stops compressor control and outputs this DTC if the rotation load is too large or too

small while controlling motor rotation in the electric compressor. Possible causes are refrigerant gas leakage,

overcharged refrigerant gas, insufficient cooling because of a condenser fan circuit malfunction, or compres-

sor lock. The output DTC of B2646, B2647, B2648 and B264C are memorized only present trouble. On

B264D, compressor control may not resume unless the ignition switch is turned OFF and waiting for 10 min-

utes.

DTC Logic

INFOID:0000000004215348

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at

least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON (READY) and wait at least 5 seconds.

2. Check DTC.
Is DTC detected?

YES

>> Go to Diagnosis Procedure. 

HAC-64, "Diagnosis Procedure"

.

NO

>> END.

Diagnosis Procedure

INFOID:0000000004215349

1.

CHECK CAN COMMUNICATION SYSTEM

Use the CONSULT-III to check if the CAN Communication System is functioning normally.
Is CAN DTC detected?

YES

>> Check CAN communication. Refer to 

LAN-16, "Trouble Diagnosis Flow Chart"

.

NO

>> GO TO 2.

2.

PERFORM ACTIVE TEST

1. Turn ignition switch ON (READY).

2. Perform “FAN DUTY CONTROL” in “ACTIVE TEST” mode with CONSULT-III.
Does cooling fan operates smoothly?

YES

>> GO TO 3.

DTC No.

Trouble Diagnosis Name

DTC Detecting Condition

Possible Cause

B2646

VOLT MAIN

After READY and A/C ON

• Refrigerant volume
• Electric compressor
• Cooling fan system
• CAN communication system

B2647

MOTOR CRNT LIMIT

After READY and A/C ON

B2648

SOFT OVER CRNT

After READY and A/C ON

B2649

OVER LOAD

• After READY and A/C ON
• Motor's rotation load while the compressor is 

operating is too large or too small.

B264A

INPT OVR CRNT

After READY and A/C ON

B264C

STARUP FAIL

• After READY and A/C ON
• Electric compressor cannot start or operate 

normally.

B264D

SYS FAIL STOP

 

 

 

 

 

 

 

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