Nissan X-Trail 32. Manual — part 818
IGNITION SIGNAL
EC-401
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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6.
CHECK IGNITION COIL GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check the continuity between ignition coil harness connector and ground.
3.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace malfunctioning part.
7.
CHECK IGNITION COIL OUTPUT SIGNAL CIRCUIT
1.
Disconnect ECM harness connector.
2.
Check the continuity between ignition coil harness connector and ECM harness connector.
3.
Also check harness for short to ground and to power.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> Repair or replace malfunctioning part.
8.
CHECK IGNITION COIL WITH POWER TRANSISTOR
Check ignition coil with power transistor. Refer to
EC-401, "Component Inspection (Ignition Coil With Power
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-44, "Intermittent Incident"
.
NO
>> Replace malfunctioning ignition coil with power transistor. Refer to
Component Inspection (Ignition Coil With Power Transistor)
INFOID:0000000010775291
1.
CHECK IGNITION COIL WITH POWER TRANSISTOR-1
1.
Turn ignition switch OFF.
2.
Disconnect ignition coil harness connector.
3.
Check resistance between ignition coil terminals as per the following.
+
−
Continuity
Ignition coil
Cylinder
Connector
Terminal
1
F33
2
Ground
Existed
2
F34
2
3
F35
2
4
F36
2
+
−
Continuity
Ignition coil
ECM
Cylinder
Connector
Terminal
Connector
Terminal
1
F33
1
F8
78
Existed
2
F34
1
82
3
F35
1
86
4
F36
1
90
Ignition coil
Resistance
Ω
[at 25
°
C (77
°
F)]
+
−
Terminal
EC-402
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
IGNITION SIGNAL
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace malfunctioning ignition coil with power transistor. Refer to
.
2.
CHECK IGNITION COIL WITH POWER TRANSISTOR-2
CAUTION:
Perform the following procedure in a place with no combustible objects and good ventilation.
1.
Reconnect all harness connectors disconnected.
2.
Remove fuel pump fuse in IPDM E/R to release fuel pressure.
NOTE:
Do not use CONSULT to release fuel pressure, or fuel pressure applies again during the following proce-
dure.
3.
Start engine.
4.
After engine stalls, crank it 2 or 3 times to release all fuel pressure.
5.
Turn ignition switch OFF.
6.
Remove all ignition coil harness connectors to avoid the electrical discharge from the ignition coils.
7.
Remove ignition coil and spark plug of the cylinder to be checked. Refer to
.
8.
Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
9.
Connect spark plug and harness connector to ignition coil.
10. 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.
11. Crank engine for approximately 3 seconds, and check whether
spark is generated between the spark plug and the grounded
metal portion.
CAUTION:
• During the operation, always stay 0.5 m (19.7 in) or more
away from the spark plug and the ignition coil. Be careful
not to get an electrical shock while checking, because the
electrical 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 malfunctioning.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace malfunctioning ignition coil with power transistor. Refer to
.
Component Inspection (Condenser)
INFOID:0000000010775292
1.
CHECK CONDENSER
1.
Turn ignition switch OFF.
2.
Disconnect condenser harness connector.
3.
Check resistance between condenser terminals as per the following.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace condenser.
1
2
Except 0 or
∞
Ω
3
Except 0
Ω
2
3
Spark should be generated.
JMBIA0066GB
Condenser
Resistance M
Ω
[at 25
°
C (77
°
F)]
+
−
Terminal
1
2
Above 1
ELECTRICAL LOAD SIGNAL
EC-403
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
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ELECTRICAL LOAD SIGNAL
Description
INFOID:0000000010775293
The electrical load signal (Headlamp switch signal, rear window defogger switch signal, etc.) is transferred
from BCM via the CAN communication through IPDM E/R to ECM.
Component Function Check
INFOID:0000000010775294
1.
CHECK REAR WINDOW DEFOGGER SWITCH FUNCTION
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” of “ENGINE” with CONSULT.
3.
Select “LOAD SIGNAL” and check indication under the following conditions.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Proceed to
.
2.
CHECK LIGHTING SWITCH FUNCTION
Check “LOAD SIGNAL” indication under the following conditions.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Proceed to
.
3.
CHECK HEATER FAN CONTROL SWITCH FUNCTION
Select “HEATER FAN SW” and check indication under the following conditions.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Proceed to
.
Diagnosis Procedure
INFOID:0000000010775295
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.
2.
CHECK REAR WINDOW DEFOGGER SYSTEM
Check rear window defogger system. Refer to
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
position
ON
OFF
OFF
Monitor item
Condition
Indication
HEATER FAN SW
Heater fan control switch
ON
ON
OFF
OFF
EC-404
< DTC/CIRCUIT DIAGNOSIS >
[MR20DD]
ELECTRICAL LOAD SIGNAL
>> INSPECTION END
3.
CHECK HEADLAMP SYSTEM
Check headlamp system. Refer to
(LED type),
(halogen type).
>> INSPECTION END
4.
CHECK HEATER FAN CONTROL SYSTEM
Check heater fan control system. Refer to
(With automatic air conditioning)
(With manual air conditioning).
>> INSPECTION END
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