Nissan Leaf. Manual - part 782

 

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Nissan Leaf. Manual - part 782

 

 

B27BF ELECTRIC COMPRESSOR

HAC-131

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

Component Inspection

INFOID:0000000010121841

DANGER:

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of

electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are

handled incorrectly. Be sure to follow the correct work procedures when performing inspection and

maintenance.

WARNING:

• Be sure to remove the service plug in order to disconnect the high voltage circuits before perform-

ing inspection or maintenance of high voltage system harnesses and parts.

• The removed service plug must always be carried in a pocket of the responsible worker or placed in

the tool box during the procedure to prevent the plug from being connected by mistake.

• Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses

before beginning work on the high voltage system.

• Never allow workers other than the responsible person to touch the vehicle containing high voltage

parts. To keep others from touching the high voltage parts, these parts must be covered with an insu-

lating sheet except when using them.

• Refer to 

GI-34, "High Voltage Precautions"

.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise

instructed in the Service Manual. A malfunction may occur if this is not observed.

1.

PRECONDITIONING

WARNING:

Disconnect the high voltage. Refer to 

GI-33, "How to Disconnect High Voltage"

.

Check voltage in high voltage circuit. (Check that condenser are discharged.)

1. Lift up the vehicle and remove the Li-ion battery under covers. Refer to 

EVB-181, "Exploded View"

.

2. Disconnect high voltage harness connector and PTC heater harness connector from front side of Li-ion

battery. Refer to 

EVB-181, "Removal and Installation"

.

3. Measure voltage between high voltage harness connector terminals and PTC heater harness connector

terminals.

DANGER:

 

 Touching high voltage components without using the appropriate protective equipment will

cause electrocution.

CAUTION:

For voltage measurements, use a tester which can measure to 500 V or higher.

>> GO TO 2.

2.

CHECK THE HVIL CIRCUIT OF THE ELECTRIC COMPRESSOR HIGH VOLTAGE HARNESS CONNEC-

TOR

Standard

: 5 V or less 

JPCIA0296ZZ

HAC-132

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

B27BF ELECTRIC COMPRESSOR

1. Disconnect the cable from the negative terminal of the 12V battery. Refer to 

HAC-11, "Precaution for

Removing 12V Battery"

.

2. Disconnect the electric compressor high voltage harness connector.

3. Check for continuity between HVIL circuit terminals of electric compressor vehicle side high voltage har-

ness connector using a resistance meter.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace the high voltage harness between electric compressor and PDM (power delivery mod-

ule).

B27C0 ELECTRIC COMPRESSOR

HAC-133

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

C

D

E

F

G

H

J

K

L

M

A

B

HAC

N

O

P

B27C0 ELECTRIC COMPRESSOR

DTC Logic

INFOID:0000000010121842

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch OFF.

2. Set the vehicle to READY.

3. Operate the automatic air conditioning system.

4. Set the temperature to full cold and wait at least 2 seconds.

5. Select “Self Diagnostic Result” of “HVAC” using CONSULT.

6. Check DTC.
Is DTC detected?

YES

>> Refer to 

HAC-133, "Diagnosis Procedure"

.

NO

>> Inspection End.

Diagnosis Procedure

INFOID:0000000010121843

DANGER:

Since hybrid vehicles and electric vehicles contain a high voltage battery, there is the risk of

electric shock, electric leakage, or similar accidents if the high voltage component and vehicle are

handled incorrectly. Be sure to follow the correct work procedures when performing inspection and

maintenance.

WARNING:

• Be sure to remove the service plug in order to disconnect the high voltage circuits before perform-

ing inspection or maintenance of high voltage system harnesses and parts.

• The removed service plug must always be carried in a pocket of the responsible worker or placed in

the tool box during the procedure to prevent the plug from being connected by mistake.

• Be sure to wear insulating protective equipment consisting of glove, shoes, face shield and glasses

before beginning work on the high voltage system.

• Never allow workers other than the responsible person to touch the vehicle containing high voltage

parts. To keep others from touching the high voltage parts, these parts must be covered with an insu-

lating sheet except when using them.

• Refer to 

GI-34, "High Voltage Precautions"

.

CAUTION:

Never bring the vehicle into the READY status with the service plug removed unless otherwise

instructed in the Service Manual. A malfunction may occur if this is not observed.

Regarding Wiring Diagram information, refer to 

HAC-61, "Wiring Diagram"

.

DIAGNOSIS PROCEDURE

CAUTION:

DTC

Items

(CONSULT screen terms)

DTC detection condition

Possible cause

B27C0

COMP COMM ERROR 
COMP->HVAC

When the A/C auto amp cannot receive the sig-
nal transmitted from the electric compressor.

• Electric compressor
• A/C auto amp.
• Harness or connectors

(Electric compressor circuit is open 
or shorted.)

• High voltage harness or connectors

(Electric compressor high voltage 
circuit is open or shorted.)

• PDM (power delivery module)

HAC-134

< DTC/CIRCUIT DIAGNOSIS >

[AUTO A/C (WITH HEAT PUMP)]

B27C0 ELECTRIC COMPRESSOR

Erase DTC after the work is completed.

1.

PRECONDITIONING

WARNING:

Disconnect the high voltage. Refer to 

GI-33, "How to Disconnect High Voltage"

.

Check voltage in high voltage circuit. (Check that condenser are discharged.)

1. Lift up the vehicle and remove the Li-ion battery under covers. Refer to 

EVB-181, "Exploded View"

.

2. Disconnect high voltage harness connector and PTC heater harness connector from front side of Li-ion

battery. Refer to 

EVB-181, "Removal and Installation"

.

3. Measure voltage between high voltage harness connector terminals and PTC heater harness connector

terminals.

DANGER:

 

 Touching high voltage components without using the appropriate protective equipment will

cause electrocution.

CAUTION:

For voltage measurements, use a tester which can measure to 500 V or higher.

>> GO TO 2.

2.

CHECK ELECTRIC COMPRESSOR COMMUNICATION LINE FOR OPEN

1. Turn power switch OFF.

2. Disconnect electric compressor and A/C auto amp. connector.

3. Check continuity between electric compressor harness connector and A/C auto amp. harness connector.

NOTE:

Check for any adhering foreign substances, cracking, or damage on the electric compressor terminal and

A/C auto amp. harness connector terminal.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK ELECTRIC COMPRESSOR COMMUNICATION LINE FOR SHORT

Check continuity between electric compressor harness connector and ground.

Standard

: 5 V or less 

JPCIA0296ZZ

Electric compressor

A/C auto amp.

Continuity

Connector

Terminal

Connector

Terminal

F20

5

M55

40

Yes

 

 

 

 

 

 

 

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