2008 NISSAN LATIO Service Repair Manual

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Page 1609 of 2771

NISSAN LATIO 2008 Service Repair Manual IGNITION SIGNAL
EC-535
< SERVICE INFORMATION >
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: Average voltage for pulse signal (Actual pulse signal can be confirmed by oscilloscope.)
Diagnosis ProcedureINFOID:0000

Page 1610 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-536
< SERVICE INFORMATION >
IGNITION SIGNAL
2. Read the voltage signal between ECM terminals 17, 18, 21, 22
and ground with an oscilloscope.
3. Verify that the oscilloscope screen shows the signal

Page 1611 of 2771

NISSAN LATIO 2008 Service Repair Manual IGNITION SIGNAL
EC-537
< SERVICE INFORMATION >
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2. Disconnect IPDM E/R harness connector E43.
3. Check harness continuity between IPDM E/R terminal 3 and condenser-2 ter

Page 1612 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-538
< SERVICE INFORMATION >
IGNITION SIGNAL
5. Check voltage between ignition coil terminal 3 and ground with
CONSULT-II or tester.
OK or NG
OK >> GO TO 12.
NG >> GO TO 11.
11 .DETECT MALFUNCTIONIN

Page 1613 of 2771

NISSAN LATIO 2008 Service Repair Manual IGNITION SIGNAL
EC-539
< SERVICE INFORMATION >
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1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil ter

IGNITION SIGNAL
EC-539
< SERVICE INFORMATION >
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1. Turn ignition switch OFF.
2. Disconnect ignition coil harness connector.
3. Check resistance between ignition coil terminals as follows.
4. If NG, replace ignition coil with power transistor.
If OK, go to next step.
5. Turn ignition switch OFF.
6. Reconnect all harness connectors disconnected.
7. Remove fuel pump fuse (1) in IPDM E/R (2) to release fuel pres-
sure.
NOTE:
Do not use CONSULT-II to release fuel pressure, or fuel pres-
sure applies again during the following procedure.
- : Vehicle front
8. Start engine.
9. After engine stalls, crank it two or three times to release all fuel
pressure.
10. Turn ignition switch OFF.
11. Remove all ignition coil harness connectors to avoid the electri-
cal discharge from the ignition coils.
12. Remove ignition coil and spark plug of the cylinder to be checked.
13. Crank engine for 5 seconds or more to remove combustion gas in the cylinder.
14. Connect spark plug and harness connector to ignition coil.
15. Fix ignition coil using a rope etc. with gap of 13 - 17 mm
between the edge of the spark plug and grounded metal portion
as shown in the figure.
16. Crank engine for about 3 seconds, and check whether spark is
generated between the spark plug and the grounded metal por-
tion.
CAUTION:
• Do not approach to the spark plug and the ignition coil
within 50cm. Be careful not to get an electrical shock
while checking, because the electrical discharge voltage
becomes 20kV or more.
• It might cause to damage the ignition coil if the gap of more than 17 mm is taken.
NOTE:
When the gap is less than 13 mm, the spark might be generated even if the coil is malfunctioning.
17. If NG, replace ignition coil with power transistor.
CONDENSER-2
1. Turn ignition switch OFF.
2. Disconnect condenser-2 harness connector.
Terminal No. (Polarity) Resistance Ω [at 25°C (77°F)]
1 and 2 Except 0 or ∞
1 and 3
Except 0
2 and 3
Spark should be generated.
PBIB0847E
PBIB2958E
PBIB2325E

Page 1614 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-540
< SERVICE INFORMATION >
IGNITION SIGNAL
3. Check resistance between condenser-2 terminals 1 and 2.
4. If NG, replace condenser-2.
Removal and InstallationINFOID:0000000001703075
IGNITION COIL W

Page 1615 of 2771

NISSAN LATIO 2008 Service Repair Manual REFRIGERANT PRESSURE SENSOR
EC-541
< SERVICE INFORMATION >
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REFRIGERANT PRESSURE SENSOR
Component DescriptionINFOID:0000000001703076
The refrigerant pressure sensor (1)

Page 1616 of 2771

NISSAN LATIO 2008 Service Repair Manual EC-542
< SERVICE INFORMATION >
REFRIGERANT PRESSURE SENSOR
Wiring Diagram
INFOID:0000000001703077
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do

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