Nissan Leaf. Manual — part 586
EVC-368
< DTC/CIRCUIT DIAGNOSIS >
COOLING FAN
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 4.
4.
CHECK FUSE
1. Turn power switch OFF.
2. Pull out #73 fuse.
3. Check that the fuse is not fusing.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace the fuse after repairing the applicable circuit.
5.
CHECK COOLING FAN RELAY OUTPUT VOLTAGE-2
1. Turn power switch ON.
2. Check the voltage between fuse terminal and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> GO TO 6.
6.
CHECK M/C RELAY OUTPUT CIRCUIT
1. Turn power switch OFF.
2. Remove M/C relay.
3. Check the continuity between M/C relay harness connector terminal and fuse harness connector.
4. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Check M/C relay routing circuit. Refer to
EVC-371, "Diagnosis Procedure"
.
NO
>> Repair or replace error-detected parts.
7.
CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT
1. Turn power switch OFF.
2. Check the continuity between cooling fan relay harness connector and fuse terminal.
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
NO
>> Repair or replace error-detected parts.
8.
CHECK COOLING FAN RELAY GROUND CIRCUIT
1. Turn power switch OFF.
+
−
Voltage
#73 fuse terminal
Ground
12V battery volt-
age
+
−
Continuity
M/C relay
Connector
Terminal
E65
5
#73 fuse termi-
nal
Existed
+
−
Continuity
Cooling fan relay
Connector
Terminal
E18
1
#73 fuse termi-
nal
Existed
COOLING FAN
EVC-369
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
O
P
2. Check the continuity between cooling fan relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> Repair or replace error-detected parts.
9.
CHECK COOLING FAN CONTROL MODULE POWER SUPPLY CIRCUIT
1. Check the continuity between cooling fan relay harness connector and cooling fan control module harness
connector.
2. Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> Repair or replace error-detected parts.
10.
CHECK COOLING FAN RELAY
EVC-370, "Component Inspection (Cooling Fan Relay)"
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
NO
>> Replace cooling fan relay.
11.
CHECK COOLING FAN CONTROL MODULE GROUND CIRCUIT
1. Turn power switch OFF.
2. Check the continuity between cooling fan control module harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Repair or replace error-detected parts.
12.
CHECK COOLING FAN MOTOR 1 AND 2
Check cooling fan motor. Refer to
EVC-370, "Component Inspection (Cooling Fan Motor)"
.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Replace malfunctioning cooling fan motor. Refer to
.
13.
CHECK COOLING FAN CONTROL SIGNAL CIRCUIT
1. Disconnect VCM harness connector.
2. Check the continuity between cooling fan control module harness connector and VCM harness connector.
+
−
Continuity
Cooling fan relay
Connector
Terminal
E18
2
Ground
Existed
+
−
Continuity
Cooling fan control module
Cooling fan relay
Connector
Terminal
Connector
Terminal
E19
3
E18
5
Existed
+
−
Continuity
Cooling fan control module
Connector
Terminal
E19
1
Ground
Existed
EVC-370
< DTC/CIRCUIT DIAGNOSIS >
COOLING FAN
3. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Repair or replace error-detected parts.
14.
REPLACE COOLING FAN CONTROL MODULE
1. Replace cooling fan control module. Refer to
.
2. Erase the DTC.
3. Perform component function check. Refer to
EVC-367, "Component Function Check"
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace VCM. Refer to
EVC-423, "Removal and Installation"
.
Component Inspection (Cooling Fan Motor)
INFOID:0000000010120830
1.
CHECK COOLING FAN MOTOR
1. Turn power switch OFF.
2. Disconnect cooling fan control module harness connectors.
3. Supply cooling fan control module harness connector terminals with 12V battery voltage as per the follow-
ing, and check operation.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning cooling fan motor. Refer to
HCO-22, "Removal and Installation"
Component Inspection (Cooling Fan Relay)
INFOID:0000000010120831
1.
CHECK COOLING FAN RELAY
1. Turn power switch OFF.
2. Remove cooling fan relay.
3. Check the continuity between cooling fan relay terminals under
the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace cooling fan relay.
+
−
Continuity
Cooling fan control module
VCM
Connector
Terminal
Connector
Terminal
E19
2
E62
128
Existed
Cooling fan control module
Operation
Motor
Connector
Terminal
+
–
1
E301
4
5
Cooling fan operates.
2
E302
6
7
Terminals
Conditions
Continuity
3 and 5
12 V direct current supply between terminals 1 and 2
Existed
No current supply
Not existed
MBIB0057E
M/C RELAY
EVC-371
< DTC/CIRCUIT DIAGNOSIS >
D
E
F
G
H
I
J
K
L
M
A
B
EVC
N
O
P
M/C RELAY
Diagnosis Procedure
INFOID:0000000010120832
1.
CHECK BATTERY POWER SUPPLY-1
1. Turn power switch OFF.
2. Disconnect M/C relay.
3. Check the voltage between M/C relay harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK FUSIBLE LINK
1. Remove #G fusible link.
2. Check that the fusible link is not fusing.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace the fusible link after repairing the applicable circuit.
3.
CHECK BATTERY POWER SUPPLY-2
Check the voltage between fusible link harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Check power supply circuit for battery power supply.
4.
CHECK BATTERY POWER SUPPLY CIRCUIT
1. Check the continuity between M/C relay harness connector and fusible link harness connector.
2. Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
NO
>> Repair or replace error-detected parts.
5.
CHECK M/C RELAY
Check M/C relay. Refer to
EVC-372, "Component Inspection (M/C Relay)"
Is the inspection result normal?
YES
>> GO TO 6.
+
−
Voltage
M/C relay
Connector
Terminal
E65
2
Ground
12V battery volt-
age
3
+
−
Voltage
#G fusible link terminal
Ground
12V battery volt-
age
+
−
Continuity
M/C relay
Connector
Terminal
#G fusible link
terminal
E65
2
Existed
3
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст