Nissan Leaf. Instruction — 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
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. 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"
NO
>> 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 Instruction. 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 >
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• Erase DTC after the work is completed.
1.
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
.
Is DTC “P31CA” or “P31CB” detected again?
YES
>> GO TO 2.
NO
>> INSPECTION END (Quick charger malfunction)
2.
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
.
NO
>> GO TO 3.
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-
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.
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"
.
NO
>> 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
Terminal
H3
38
11
Not existed
37
12
JSCIA0700GB
P31D3 M/C RELAY
EVC-319
< DTC/CIRCUIT DIAGNOSIS >
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P31D3 M/C RELAY
DTC Logic
INFOID:0000000010120787
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 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"
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000010120788
1.
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.
NO
>> GO TO 2.
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.
NO
>> Replace M/C relay.
3.
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
1
Ground
0 V
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