Nissan Sentra. Manual — part 441
EC-460
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
IGNITION SIGNAL
11. Fix ignition coil using a rope etc. with gap of 13 - 17 mm (0.52 -
0.66 in) between the edge of the spark plug and grounded metal
portion as shown in the figure.
12. Crank engine for about three seconds, and check whether spark
is generated between the spark plug and the grounded metal
portion.
CAUTION:
• During the operation, always stay 0.5 cm (19.7 in) away
from the spark plug and the ignition coil. Be careful not to
get an electrical shock while checking, because the elec-
trical discharge voltage becomes 20 kV or more.
• It might cause to damage the ignition coil if the gap of more than 17 mm (0.66 in) is taken.
NOTE:
When the gap is less than 13 mm (0.52 in), the spark might be generated even if the coil is mal-
functioning.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning ignition coil with power transistor. Refer to
Spark should be generated.
JMBIA0066GB
ELECTRICAL LOAD SIGNAL
EC-461
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
ELECTRICAL LOAD SIGNAL
Description
INFOID:0000000009758718
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred via
the CAN communication line.
Component Function Check
INFOID:0000000009758719
1.
CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
With CONSULT
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode of “ENGINE” using CONSULT.
3. Select “LOAD SIGNAL” and check indication as per the following conditions.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Proceed to
.
2.
CHECK LIGHTING SWITCH FUNCTION
With CONSULT
Check “LOAD SIGNAL” indication as per the following conditions.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Proceed to
.
3.
CHECK HEATER FAN CONTROL SWITCH FUNCTION
With CONSULT
Select “HEATER FAN SW” and check indication as per the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000009758720
1.
INSPECTION START
Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to
Which circuit is related to the incident?
Rear window defogger>>GO TO 2.
Headlamp>>GO TO 3.
Heater fan>>GO TO 4.
Monitor item
Condition
Indication
LOAD SIGNAL
Rear window defogger switch
ON
ON
OFF
OFF
Monitor item
Condition
Indication
LOAD SIGNAL
Lighting switch
ON at 2nd posi-
tion
ON
OFF
OFF
Monitor item
Condition
Indication
HEATER FAN
SW
Heater fan control switch
ON
ON
OFF
OFF
EC-462
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
ELECTRICAL LOAD SIGNAL
2.
CHECK REAR WINDOW DEFOGGER SYSTEM
Check the rear window defogger system. Refer to
.
>> INSPECTION END
3.
CHECK HEADLAMP SYSTEM
Check the headlamp system. Refer to
.
>> INSPECTION END
4.
CHECK HEATER FAN CONTROL SYSTEM
Check the heater fan control system. Refer to
.
>> INSPECTION END
COOLING FAN
EC-463
< DTC/CIRCUIT DIAGNOSIS >
[MRA8DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
COOLING FAN
Component Function Check
INFOID:0000000009758721
1.
CHECK COOLING FAN FUNCTION
With CONSULT
1. Turn ignition switch ON.
2. Perform “FAN” in “ACTIVE TEST” mode of “ENGINE” using CONSULT.
3. Check that cooling fan operates at low speed or high speed.
Without CONSULT
1. Activate IPDM E/R auto active test and check cooling fan motors operation. Refer to
(with intelligent key), or
PCS-37, "Diagnosis Description"
(without intelligent key).
2. Check that cooling fan operates.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000009758722
1.
CHECK COOLING FAN MOTOR GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect cooling fan motor harness connector.
3. Check the continuity between cooling fan motor harness connector and ground.
4. Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace error-detected parts.
2.
CHECK COOLING FAN MOTOR CIRCUIT-1
1. Disconnect IPDM E/R harness connector.
2. Check the continuity between IPDM E/R harness connector and cooling fan motor harness connector.
3. Also check harness for short to ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace error-detected parts.
3.
CHECK COOLING FAN MOTOR
Check cooling fan motor. Refer to
EC-464, "Component Inspection (Cooling Fan Motor)"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace cooling fan motor. Refer to
CO-17, "Removal and Installation"
.
+
−
Continuity
Cooling fan motor
Connector
Terminal
E53
3
Ground
Existed
+
−
Continuity
IPDM E/R
Cooling fan motor
Connector
Terminal
Connector
Terminal
E44
23
E53
1
Existed
21
2
E48
58
4
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст