Nissan X-Trail 32. Manual - part 818

 

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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

Transistor)"

.

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 

EM-54, "Exploded View"

.

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 

 [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 

EM-54, "Exploded View"

.

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 

EM-54, "Exploded View"

.

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 

EM-54, "Exploded View"

.

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 

 

3

Except 0 

2

3

Spark should be generated.

JMBIA0066GB

Condenser

Resistance M

 [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 

EC-403, "Diagnosis Procedure"

.

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 

EC-403, "Diagnosis Procedure"

.

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 

EC-403, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010775295

1.

INSPECTION START

Confirm the malfunctioning circuit (rear window defogger, headlamp or heater fan). Refer to 

EC-403, "Compo-

nent Function Check"

.

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 

DEF-25, "Work Flow"

.

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 

EXL-95, "Work Flow"

 (LED type), 

EXL-297, "Work Flow"

 (halogen type).

>> INSPECTION END

4.

CHECK HEATER FAN CONTROL SYSTEM

Check heater fan control system. Refer to 

HAC-69, "Work Flow"

 (With automatic air conditioning) 

HAC-183,

"Work Flow"

 (With manual air conditioning).

>> INSPECTION END

 

 

 

 

 

 

 

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