Content .. 534 535 536 537 ..

Nissan Leaf. Manual - part 536

EVC-168

< DTC/CIRCUIT DIAGNOSIS >

P0AA2 SYSTEM MAIN RELAY +

P0AA2 SYSTEM MAIN RELAY +

DTC Logic

INFOID:0000000010120627

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 a least 10 seconds.

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

YES

>> Proceed to

EVC-168, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120628

CHECK SYSTEM MAIN RELAY GROUND CIRCUIT

1. Turn power switch OFF.

2. Disconnect Li-ion battery harness connector.

3. Check the continuity between Li-ion battery harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

>> Repair or replace error-detected parts.

CHECK SYSTEM MAIN RELAY CIRCUIT

Check continuity between Li-ion battery connector terminals.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0AA2

HYBRID BATT POSITIVE
CONTACTOR
(Hybrid battery positive
contactor circuit stuck
open)

VCM detects a break in the drive circuit of System
main relay 1 or an extremely high resistance for
2.5 seconds or more.

• Harness or connectors
• Battery J/B

−

Continuity

Li-ion battery

Connector

terminal

B89

Ground

Existed

Li-ion battery

Continuity

terminals

Existed

P0AA2 SYSTEM MAIN RELAY +

EVC-169

< DTC/CIRCUIT DIAGNOSIS >

EVC

Is the inspection result normal?

YES

>> GO TO 3.

>> Check the relay circuit of Li-ion battery for malfunction. If no malfunction is found, replace battery

junction box. Refer to

EVB-206, "BATTERY JUNCTION BOX AND BATTERY HARNESS : Disas-

sembly and Assembly"

CHECK SYSTEM MAIN RELAY DRIVE CIRCUIT

1. Disconnect VCM harness connector.

2. Check the continuity between VCM harness connector and Li-ion battery harness connector.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-53, "Intermittent Incident"

>> Repair harness or connector.

−

Continuity

VCM

Li-ion battery

Connector

terminal

Connector

terminal

E61

B89

Existed

EVC-170

< DTC/CIRCUIT DIAGNOSIS >

P0AA4 SYSTEM MAIN RELAY -

P0AA4 SYSTEM MAIN RELAY -

DTC Logic

INFOID:0000000010120629

DTC DETECTION LOGIC

NOTE:

If DTC P0AA4 is displayed with DTC P0AA5 or P31DC, perform diagnosis for DTC P0AA5 or P31DC.

DTC CONFIRMATION PROCEDURE

PRECONDITIONING

CAUTION:

Since this DTC may be displayed if a malfunction is detected in other systems, check them for mal-

function before performing this diagnosis.

• 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. Set the vehicle to READY.

2. Turn power switch OFF and wait at least 60 seconds.

3. Turn power switch ON.

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

YES

>> Proceed to

EVC-170, "Diagnosis Procedure"

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000010120630

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.

DTC

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0AA4

HYBRID BATT NEGATIVE
CONTACTOR
(Hybrid battery negative con-
tactor circuit stuck closed)

During the stop state from READY or charging state, the voltage
of the traction monitor inverter is 100 V or more.

• Harness or connectors
• Battery J/B
• Electric compressor
• PTC heater
• Traction motor inverter
• High voltage harness

P0AA4 SYSTEM MAIN RELAY -

EVC-171

< DTC/CIRCUIT DIAGNOSIS >

EVC

• 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.

• Erase DTC after the work is completed.

CHECK SYSTEM MAIN RELAY DRIVE POWER VOLTAGE

1. Turn power switch OFF.

2. Disconnect Li-ion battery harness connector.

3. Check the voltage between Li-ion battery harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

>> GO TO 2.

CHECK SYSTEM MAIN RELAY DRIVE CIRCUIT

1. Disconnect VCM harness connector.

2. Check harness for short to power, between Li-ion battery harness connector and VCM harness connector.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-53, "Intermittent Incident"

>> Repair or replace error-detected parts.

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, "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:

Relay

−

Voltage

Li-ion battery

Connector

Terminal

System main relay 1

B89

Ground

0 V

System main relay 2

Pre-charge relay

−

Voltage

Li-ion battery

Connector

Terminal

B89

Ground

0 V

JPCIA0296ZZ

Content .. 534 535 536 537 ..