Nissan Leaf. Manual - part 1230

B2890 DC/DC CONVERTER

VC-87

< DTC/CIRCUIT DIAGNOSIS >

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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.

CHECK LI-ION BATTERY HIGH-VOLTAGE HARNESS

1. Remove PDM (Power Delivery Module) from the vehicle. Refer to 

VC-112, "Removal and Installation"

.

2. Remove Li-ion battery high-voltage harness from PDM (Power Delivery Module). Refer to 

VC-119, "Disas-

sembly and Assembly"

.

3. Check the continuity of Li-ion battery high-voltage harness.

Is the inspection result normal?

YES

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

VC-112, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

TYPE C
TYPE C : Diagnosis Procedure

INFOID:0000000010121273

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1. Erase DTC.

2. Turn power switch OFF.

3. Perform DTC confirmation procedure again. Refer to 

VC-85, "DTC Logic"

.

Is the DTC detected again?

YES

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

VC-112, "Removal and Installation"

.

NO

>> INSPECTION END

TYPE D
TYPE D : Diagnosis Procedure

INFOID:0000000010121274

1.

CHECK COOLING FAN

Check the cooling fan. Refer to 

EVC-367, "Component Function Check"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace error-detected parts.

2.

CHECK HIGH VOLTAGE COOLING SYSTEM

Inspect coolant level and leakage of high voltage cooling system. Refer to 

HCO-11, "Inspection"

.

Is the inspection result normal?

YES

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

VC-112, "Removal and Installation"

.

NO

>> Repair or replace error-detected parts.

PDM

(Power Delivery Module)

Li-ion battery

Continuity

Connector

Terminal

Connector

Terminal

H5

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H3

37

Existed

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38

VC-88

< DTC/CIRCUIT DIAGNOSIS >

B2900, B2902 PDM(POWER DELIVERY MODULE)

B2900, B2902 PDM(POWER DELIVERY MODULE)

DTC Logic

INFOID:0000000010121275

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch ON and wait for 5 seconds or more.

2. Check “Self-diagnosis result” of “CHARGER/PD MODULE”.
Is DTC detected?

YES

>> Proceed to 

VC-88, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010121276

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1. Erase DTC.

2. Turn power switch OFF.

3. Perform DTC confirmation procedure again. Refer to 

VC-88, "DTC Logic"

.

Is the DTC detected again?

YES

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

VC-112, "Removal and Installation"

.

NO

>> INSPECTION END

DTC

CONSULT display

(Malfunction type)

DTC detection condition

Possible causes

B2900

PDM (POWER DELIVERY 
MODULE)
(Program memory error)

PDM (Power Delivery Module) internal ROM malfunction

PDM (Power Delivery Module)

PDM (POWER DELIVERY 
MODULE)
(Data memory error)

PDM (Power Delivery Module) internal RAM malfunction

B2902

PDM (POWER DELIVERY 
MODULE)
(Memory error)

• PDM (Power Delivery Module) internal EEPROM mal-

function

• I2C communication malfunction (EEPROM control sec-

tion)

PDM (POWER DELIVERY 
MODULE)
(Component internal mal-
function)

I2C communication malfunction (EEPROM control section)

B2980 QUICK CHARGE PORT

VC-89

< DTC/CIRCUIT DIAGNOSIS >

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B2980 QUICK CHARGE PORT

Description

INFOID:0000000010121277

The quick charge port contains a temperature sensor, and the quick charge port temperature signals is sent as

two lines of voltage to the PDM (Power Delivery Module).

DTC Logic

INFOID:0000000010121278

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Perform quick charging for 10 seconds or more.

2. Turn power switch ON.

3. Check “Self-diagnosis result” of “CHARGER/PD MODULE”.
Is DTC detected?

YES

>> Proceed to 

VC-89, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010121279

1.

PERFORM DTC CONFIRMATION PROCEDURE AGAIN

With CONSULT

1. Turn power switch ON.

2. Erase DTC.

3. Turn power switch OFF.

4. Perform DTC confirmation procedure again by using a quick charger other than the one is used for the

previous DTC confirmation procedure. Refer to 

VC-89, "DTC Logic"

.

Is the DTC detected again?

YES

>> GO TO 2.

NO

>> INSPECTION END (Quick Charger malfunction)

2.

CHECK QUICK CHARGE PORT CONDITION

Check for any adhering foreign substances, cracking or damage on the quick charge port. Refer to 

VC-52,

"Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Clean or replace the quick charge port. Refer to 

VC-128, "Removal and Installation"

.

3.

CHECK QUICK CHARGE PORT HARNESS CONNECTOR

1. Turn power switch OFF.

DTC

CONSULT display

(Malfunction type)

DTC detection condition

Possible causes

B2980

QUICK CHARGE PORT 
TEMP
(Signal stuck high)

• During quick charging, the signal voltage of 

the quick charge port temperature sensor is 
4.85 V or more continuously for 3 seconds or 
more.

• During quick charging, the signal voltage of 

the quick charge port temperature sensor is 
less than 0.15 V continuously for 3 seconds or 
more.

• Harness and connector

(Quick charge port circuit is open 
or shorted.)

• Quick charge port
• Quick charger (connector) 

QUICK CHARGE PORT 
TEMP
(Component or system 
over temperature)

During quick charging, the quick charge port 
temperature is 90

°C or more continuously for 3 

seconds or more.

VC-90

< DTC/CIRCUIT DIAGNOSIS >

B2980 QUICK CHARGE PORT

2. Disconnect quick charge port harness connector.

3. Check quick charge port harness connector. (E7). Refer to 

GI-50, "How to Check Terminal"

.

4. Check contact pressure of quick charge port harness connector (E7). Refer to 

GI-50, "How to Check Ter-

minal"

.

5. Check the waterproof condition of quick charge port harness connector (E7). Refer to 

GI-50, "How to

Check Terminal"

.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace error-detected parts.

4.

CHECK QUICK CHARGE PORT

Check the quick charge port. Refer to 

VC-91, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace quick charge port. Refer to 

VC-128, "Removal and Installation"

.

5.

CHECK QUICK CHARGE PORT TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

1. Disconnect PDM (Power Delivery Module) harness connector .

NOTE:

Loosen the PDM (Power Delivery Module) harness connector by

rotating it counterclockwise and remove it.

2. Check the continuity between PDM (Power Delivery Module)

harness connector and quick charge port harness connector.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK QUICK CHARGE PORT TEMPERATURE SENSOR GROUND CIRCUIT

Check the continuity between quick charge port harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Repair or replace error-detected parts.

7.

CHECK 12V BATTERY NEGATIVE CABLE ON PDM (POWER DELIVERY MODULE) SIDE (1)

: Vehicle front

PDM

(Power Delivery Module)

Quick charge port

Continuity

Connector

Terminal

Connector

Terminal

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E7

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Existed

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JSCIA0693ZZ

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−

Continuity

Quick charge port

Connector

Terminal

E7

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Ground

Existed