Content .. 571 572 573 574 ..

Nissan Leaf. Manual - part 573

EVC-316

< DTC/CIRCUIT DIAGNOSIS >

P31CA, P31CB QUICK CHARGE RELAY

P31CA, P31CB QUICK CHARGE RELAY

DTC Logic

INFOID:0000000010120785

DTC DETECTION LOGIC

NOTE:

If DTC P31CA or P31CB is displayed with DTC P3101, first perform diagnosis for DTC P3101.

DTC CONFIRMATION PROCEDURE

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.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Start quick charge and wait at least 30 seconds.

2. Stop quick charge and wait at least 30 seconds.

3. Turn power switch ON.

4. Check DTC.
Is DTC detected?

YES

>> Proceed to

EVC-316, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120786

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.

• To prevent the removed service plug from being connected by mistake during the procedure, always

carry it in your pocket or put it in the tool box.

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

before beginning work on the high voltage system.

• Clearly identify the persons responsible for high voltage work and ensure that other persons do not

touch the vehicle. When not working, cover high voltage parts with an insulating cover sheet or sim-

ilar item to prevent other persons from contacting them.

• Refer to

EVC-10, "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.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P31CA

PD MODULE
(Power Delivery Module)

VCM received quick charge relay (-) stuck signal
from PDM (Power Delivery Module).

• Harness or connectors
• Quick charge relay
• PDM (Power Delivery Module)

P31CB

VCM received quick charge relay (+) stuck signal
from PDM (Power Delivery Module).

P31CA, P31CB QUICK CHARGE RELAY

EVC-317

< DTC/CIRCUIT DIAGNOSIS >

EVC

• Erase DTC after the work is completed.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Erase DTC.

2. 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.

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

the initial confirmation procedure. Refer to

EVC-316, "DTC Logic"

Is DTC “P31CA” or “P31CB” detected again?

YES

>> GO TO 2.

>> INSPECTION END (Quick charger malfunction)

PERFORM SELF-DIAGNOSIS OF PDM (POWER DELIVERY MODULE)

Perform self-diagnosis of PDM (Power Delivery Module).
Is any DTC detected?

YES

>> Perform diagnosis procedure of detected DTC. Refer to

VC-34, "DTC Index"

>> GO TO 3.

PRECONDITIONING

WARNING:

Disconnect 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, "Removal and Installa-

tion"

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 4.

CHECK QUICK CHARGE RELAY

Standard

: 5 V or less

JPCIA0296ZZ

EVC-318

< DTC/CIRCUIT DIAGNOSIS >

P31CA, P31CB QUICK CHARGE RELAY

1. Disconnect Li-ion battery harness connector (H3).

2. Check the continuity between Li-ion battery harness connector and quick charge port terminal (plug-in

side).

Is the inspection result normal?

YES

>> Replace VCM. Refer to

EVC-423, "Removal and Installation"

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

VC-112, "Removal and Installation"

: #11 terminal (plug-in side)

: #12 terminal (plug-in side)

−

Continuity

Li-ion battery

Quick charge port

(plug-in side)

Connector

Terminal

Not existed

JSCIA0700GB

P31D3 M/C RELAY

EVC-319

< DTC/CIRCUIT DIAGNOSIS >

EVC

P31D3 M/C RELAY

DTC Logic

INFOID:0000000010120787

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

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.

PERFORM DTC CONFIRMATION PROCEDURE

With CONSULT

1. Turn power switch ON and wait at least 5 seconds.

2. Turn power switch OFF.

3. Turn power switch ON and wait at least 5 seconds.

4. Check DTC.
Is DTC detected?

YES

>> Proceed to

EVC-319, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120788

CHECK A/C RELAY DRIVE CIRCUIT VOLTAGE

1. Turn power switch OFF.

2. Disconnect A/C relay.

3. Check the voltage between A/C relay harness connector terminals.

Is the inspection result normal?

YES

>> GO TO 5.

>> GO TO 2.

CHECK M/C RELAY

Check M/C relay. Refer to

EVC-320, "Component Inspection (M/C Relay)"

Is the inspection result normal?

YES

>> GO TO 3.

>> Replace M/C relay.

CHECK A/C RELAY DRIVE CIRCUIT

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P31D3

M/C RELAY
(Motor control relay)

When turn power switch ON (or READY), a voltage is in-
put to A/C relay drive circuit of VCM even though VCM
does not turn ON the M/C relay.

• Harness or connectors
• M/C relay (stuck ON)

−

Voltage

(Approx.)

A/C relay

Connector

Terminal

E52

Ground

0 V

Content .. 571 572 573 574 ..