Nissan Leaf. Manual - part 540

 

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Nissan Leaf. Manual - part 540

 

 

EVC-184

< DTC/CIRCUIT DIAGNOSIS >

P0AA6 HIGH VOLTAGE SYSTEM ISOLATION

YES

>> Replace electric compressor. Refer to 

HA-37, "Removal and Installation"

 (With heat pump sys-

tem) or 

HA-95, "Removal and Installation"

 (Without heat pump system).

NO

>> Change refrigerant gas and compressor oil.

16.

CHECK INSULATION RESISTANCE OF PDM (POWER DELIVERY MODULE)

1. Remove high voltage harness, normal charge port, and quick charge port from PDM (Power Delivery

Module). Refer to 

VC-119, "Disassembly and Assembly"

.

2. Check insulation resistance of PDM (Power Delivery Module). Refer to 

VC-100, "Diagnosis Procedure"

.

CAUTION:

• Since testers are polarized, check the polarity of the tester and connect it in the forward direc-

tion to the circuit.

• If the inspection results show no continuity, check the parts for proper installation.

Is the inspection result normal?

YES

>> GO TO 17.

NO

>> Replace PDM (Power Delivery Module). Refer to 

VC-112, "Removal and Installation"

.

17.

CHECK INSULATION RESISTANCE OF TRACTION MOTOR

Check insulation resistance of traction motor. Refer to 

TMS-98, "Component Inspection"

.

CAUTION:

• Since testers are polarized, check the polarity of the tester and connect it in the forward direction to

the circuit.

• If the inspection results show no continuity, check the parts for proper installation.
Is the inspection result normal?

YES

>> GO TO 18.

NO

>> Replace traction motor. Refer to 

TMS-109, "Removal and Installation"

.

18.

CHECK INSULATION RESISTANCE OF TRACTION MOTOR INVERTER

Check insulation resistance of traction motor inverter. Refer to 

TMS-100, "Component Inspection"

.

CAUTION:

• Since testers are polarized, check the polarity of the tester and connect it in the forward direction to

the circuit.

• If the inspection results show no continuity, check the parts for proper installation.
Is the inspection result normal?

YES

>> Replace high voltage harness between PDM (Power Delivery Module) and Li-ion battery.

NO

>> Replace traction motor inverter. Refer to 

TMS-103, "Removal and Installation"

.

19.

CHECK INSULATION RESISTANCE OF PTC HEATER

Check insulation resistance of PTC heater. Refer to 

HAC-181, "Component Inspection"

 [Auto A/C (with heat

pump)] or 

HAC-341, "Component Inspection"

  [Auto A/C (without heat pump)].

CAUTION:

• Since testers are polarized, check the polarity of the tester and connect it in the forward direction to

the circuit.

• If the inspection results show no continuity, check the parts for proper installation.
Is the inspection result normal?

YES

>> GO TO 20.

NO

>> Replace PTC heater. Refer to 

HAC-201, "Removal and Installation"

 [Auto A/C (with heat pump)]

or 

HAC-359, "Removal and Installation"

 [Auto A/C (without heat pump)].

20.

CHECK INSULATION RESISTANCE OF LI-ION BATTERY

Check insulation resistance of Li-ion battery. Refer to 

EVB-163, "Component Inspection"

.

CAUTION:

• Since testers are polarized, check the polarity of the tester and connect it in the forward direction to

the circuit.

• If the inspection results show no continuity, check the parts for proper installation.
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-53, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

P1550, P1551, P1552 BATTERY CURRENT SENSOR

EVC-185

< DTC/CIRCUIT DIAGNOSIS >

D

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P1550, P1551, P1552 BATTERY CURRENT SENSOR

DTC Logic

INFOID:0000000010120636

DTC DETECTION LOGIC

NOTE:

If DTC P1550 is displayed with DTC P31E5, first perform the trouble diagnosis for DTC P31E5. Refer to

EVC-351, "DTC Logic"

.

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

• Turn power switch OFF and wait at least 90 seconds.

CAUTION:

During this period, never perform vehicle handling such as opening and closing of doors. If some

kind of vehicle handling is performed, then wait another 90 seconds or more from the time of the

vehicle handling.

• Make sure that 12V battery voltage is 11 V or more.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE-1

1. Turn power switch ON and wait at least 10 seconds.

2. Check self-diagnostic result.
Is DTC detected?

YES

>> Proceed to 

EVC-186, "Diagnosis Procedure"

.

NO

>> GO TO 3.

3.

PERFORM DTC CONFIRMATION PROCEDURE-2

1. Turn power switch OFF and wait at least 90 seconds.

CAUTION:

During this period, never perform vehicle handling such as opening and closing of doors. If some

kind of vehicle handling is performed, then wait another 90 seconds or more from the time of the

vehicle handling.

2. Maintain the following conditions for at least 60 seconds.

3. Check self-diagnostic result.
Is DTC detected?

YES

>> Proceed to 

EVC-186, "Diagnosis Procedure"

.

NO

>> INSPECTION END

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P1550

BATTERY CURRENT SEN-
SOR
(Battery current sensor)

The output voltage of the battery current 
sensor remains within the specified 
range during READY or charging.

• Harness or connectors

(Battery current sensor circuit is open 
or shorted.)

• Battery current sensor

P1551

BATTERY CURRENT SEN-
SOR
(Battery current sensor)

An excessively low voltage from the sen-
sor is sent to VCM.

P1552

BATTERY CURRENT SEN-
SOR
(Battery current sensor)

An excessively high voltage from the sen-
sor is sent to VCM.

Power switch

READY

Selector lever

P range

Brake pedal

Fully released

Ambient air temperature

10

°C (50°F) or more

EVC-186

< DTC/CIRCUIT DIAGNOSIS >

P1550, P1551, P1552 BATTERY CURRENT SENSOR

Diagnosis Procedure

INFOID:0000000010120637

1.

CHECK BATTERY CURRENT SENSOR POWER SUPPLY-1

1. Turn power switch OFF.

2. Disconnect battery current sensor harness connector.

3. Turn power switch ON.

4. Check the voltage between battery current sensor harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> GO TO 2.

2.

CHECK BATTERY CURRENT SENSOR POWER SUPPLY-2

Check the voltage between battery current sensor harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 5.

3.

CHECK VCM GROUND CIRCUIT

1. Turn power switch OFF.

2. Disconnect VCM harness connector.

3. Check the continuity between VCM harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK BATTERY CURRENT SENSOR GROUND CIRCUIT

1. Check the continuity between battery current sensor harness connector and VCM harness connector.

Battery current sensor

Voltage

(Approx.)

Connector

+

Terminal

E125

4

2

5 V

+

Voltage

(Approx.)

Battery current sensor

Connector

Terminal

E125

4

Ground

5 V

+

Continuity

VCM

Connector

Terminal

E61

58

Ground

Existed

65

E62

118

126

+

Continuity

Battery current sensor

VCM

Connector

Terminal

Connector

Terminal

E125

2

E62

120

Existed

P1550, P1551, P1552 BATTERY CURRENT SENSOR

EVC-187

< DTC/CIRCUIT DIAGNOSIS >

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2. Also check harness for short to power.
Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-53, "Intermittent Incident"

.

NO

>> Repair or replace error-detected parts.

5.

CHECK BATTERY CURRENT SENSOR POWER SUPPLY CIRCUIT

1. Turn power switch OFF.

2. Disconnect VCM harness connector.

3. Check the continuity between VCM harness connector and battery current sensor harness connector.

4. Also check harness for short to ground and short to power.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK SENSOR POWER SUPPLY CIRCUIT

Check harness for short to power and short to ground, between the following terminals.

Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit. Refer to 

EVC-138, "VCM : Diagnosis Pro-

cedure"

.

NO

>> Repair or replace error-detected parts.

7.

CHECK BATTERY CURRENT SENSOR INPUT SIGNAL CIRCUIT

1. Turn power switch OFF.

2. Disconnect VCM harness connector.

3. Check the continuity between battery current sensor harness connector and VCM harness connector.

4. Also check harness for short to ground and to power.
Is the inspection result normal?

YES

>> GO TO 8.

NO

>> Repair or replace error-detected parts

8.

CHECK BATTERY CURRENT SENSOR

Check the battery current sensor. Refer to 

EVC-188, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to 

GI-53, "Intermittent Incident"

.

NO

>> Replace battery current sensor. Refer to 

PG-93, "Removal and Installation"

.

+

Continuity

Battery current sensor

VCM

Connector

Terminal

Connector

Terminal

E125

4

E62

96

Existed

VCM

Sensor

Connector

Terminal

Name

Connector

Terminal

E61

36

Accelerator pedal position sensor 1

E101

3

E62

97

Accelerator pedal position sensor 2

E101

2

98

Refrigerant pressure sensor

E49

3

+

Continuity

Battery current sensor

VCM

Connector

Terminal

Connector

Terminal

E125

1

E62

95

Existed

 

 

 

 

 

 

 

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