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
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
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"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010120628
1.
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.
NO
>> Repair or replace error-detected parts.
2.
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
16
Ground
Existed
Li-ion battery
Continuity
terminals
16
17
Existed
P0AA2 SYSTEM MAIN RELAY +
EVC-169
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
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P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> 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-
.
3.
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"
.
NO
>> Repair harness or connector.
+
−
Continuity
VCM
Li-ion battery
Connector
terminal
Connector
terminal
E61
54
B89
17
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
1.
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.
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"
NO
>> 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 >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
O
P
• 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.
1.
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.
NO
>> GO TO 2.
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"
.
NO
>> Repair or replace error-detected parts.
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
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
17
Ground
0 V
System main relay 2
14
Pre-charge relay
11
+
−
Voltage
Li-ion battery
Connector
Terminal
B89
17
Ground
0 V
14
11
JPCIA0296ZZ
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