Nissan Leaf. Instruction — part 471
LI-ION BATTERY INSULATION RESISTANCE LOSS CHECK
EVB-167
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
EVB
N
O
P
NO
>> GO TO 9.
9.
CHECK INSULATION OF FRONT MODULE STACK RH-2
1. Disconnect vehicle communication harness connector of front module stack RH.
2. Measure voltages between positive terminal of front module stack RH and battery pack ground, and
between positive terminal of front module stack RH and battery pack ground.
Is the inspection result normal?
YES
>> Replace vehicle communication harness of front module stack RH and GO TO 14.
NO
>> GO TO 10.
10.
CHECK INSULATION OF FRONT MODULE STACK RH-3
1. Remove bus bar that connects front module stack RH and battery junction box.
2. Measure voltages between positive terminal of front module stack RH and battery pack ground, and
between positive terminal of front module stack RH and battery pack ground.
Is the inspection result normal?
YES
>> GO TO 11.
NO
>> GO TO 12.
: Battery pack front
+
−
Voltage
Front module stack RH
Terminal
,
Battery pack ground
Approx. 0 V
JSCIA0741ZZ
: Battery pack front
+
−
Voltage
Front module stack RH
Terminal
,
Battery pack ground
Approx. 0 V
JSCIA0741ZZ
EVB-168
< DTC/CIRCUIT DIAGNOSIS >
LI-ION BATTERY INSULATION RESISTANCE LOSS CHECK
11.
CHECK BATTERY JUNCTION BOX INSULATION RESISTANCE
1. Using insulation resistance tester, measure insulation resistance
between high voltage terminal / of battery junction box and
battery pack ground.
WARNING:
Unlike the ordinary tester, the insulation resistance tester
applies 500 V when measuring. If used incorrectly, there is
the danger of electric shock. If used in the vehicle 12V sys-
tem, there is the danger of damage to electronic devices.
Read the insulation resistance tester instruction instruction
carefully and be sure to work safely.
CAUTION:
Be sure to set the insulation resistance tester to 500 V when performing this test. Using a setting
higher than 500 V can result in damage to the component being inspected.
Is the inspection result normal?
YES
>> Replace bus bar that connects front module stack RH and battery junction box and GO TO 14.
NO
>> Replace battery junction box (Refer to
EVB-206, "BATTERY JUNCTION BOX AND BATTERY
HARNESS : Disassembly and Assembly"
) and GO TO 14.
12.
CHECK MODULE-3
1. Remove front module stack RH. Refer to
EVB-226, "FRONT MODULE STACK : Removal and Installa-
NOTE:
Do not disassemble module stack.
2. Measure voltages between terminal / of all modules in front
module stack RH and module body.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Replace malfunctioning module (Refer to
EVB-233, "FRONT MODULE STACK : Disassembly
.) and GO TO 14.
: Battery pack front
Battery junction box
—
Resistance
Terminal
Battery pack ground
1000 M
Ω or more
JSCIA0453ZZ
JSCIA0740ZZ
+
−
Voltage
Module
Terminal
Module body
Approx. 0 V
LI-ION BATTERY INSULATION RESISTANCE LOSS CHECK
EVB-169
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
EVB
N
O
P
13.
CHECK MODULE-4
Measure insulation resistance between terminal / of all modules
in front module stack RH and module body.
WARNING:
Unlike the ordinary tester, the insulation resistance tester
applies 500 V when measuring. If used incorrectly, there is the
danger of electric shock. If used in the vehicle 12V system,
there is the danger of damage to electronic devices. Read the
insulation resistance tester instruction instruction carefully and be
sure to work safely.
CAUTION:
Be sure to set the insulation resistance tester to 500 V when
performing this test. Using a setting higher than 500 V can
result in damage to the component being inspected.
Is the inspection result normal?
YES
>> Check insulation resistance of front module stack RH, because front module stack LH is normal.
GO TO 14.
NO
>> Replace malfunctioning module (Refer to
EVB-233, "FRONT MODULE STACK : Disassembly
.) and GO TO 14.
14.
CHECK INSULATION OF REAR MODULE STACK-1
1. Measure voltages between positive terminal of rear module stack and battery pack ground, and
between positive terminal of rear module stack and battery pack ground.
Is the inspection result normal?
YES-1 >> Replace or repair of malfunctioning part is not-yet performed: Replace Li-ion battery controller.
EVB-201, "LI-ION BATTERY CONTROLLER : Removal and Installation"
.
YES-2 >> Replace or repair of malfunctioning part is complete: INSPECTION END.
NO
>> GO TO 15.
15.
CHECK INSULATION OF REAR MODULE STACK-2
+
−
resistance
Module
Terminal
Module body
100 M
Ω or more
JSCIA0740ZZ
+
−
Voltage
Rear module stack
Terminal
,
Battery pack ground
Approx. 0 V
JSCIA0744ZZ
EVB-170
< DTC/CIRCUIT DIAGNOSIS >
LI-ION BATTERY INSULATION RESISTANCE LOSS CHECK
1. Disconnect vehicle communication harness connector of rear
module stack.
2. Measure voltages between positive terminal of rear module stack and battery pack ground, and
between positive terminal of rear module stack and battery pack ground.
Is the inspection result normal?
YES
>> Replace vehicle communication harness of rear module stack.
NO
>> GO TO 16.
16.
CHECK INSULATION OF FRONT MODULE STACK RH-3
1. Remove mounting nuts / and remove high voltage harness from rear module stack.
2. Measure voltages between positive terminal of rear module stack and battery pack ground, and
between positive terminal of rear module stack and battery pack ground.
JSCIA0146ZZ
+
−
Voltage
Front module stack RH
Terminal
,
Battery pack ground
Approx. 0 V
JSCIA0744ZZ
JSCIA0743ZZ
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