Nissan Qashqai J11. Manual — part 206
ECH-122
< BASIC INSPECTION >
[HRA2DDT]
FUEL PRESSURE CHECK
4.
Connect fuel hose for fuel pressure check (1) to fuel tube
(engine side) with clamp (2) as shown in the figure.
CAUTION:
• Wipe off oil or dirt from hose insertion part using cloth
moistened with gasoline.
• Apply proper amount of gasoline between top of the fuel
tube (3) and No.1 spool (4).
• Insert fuel hose for fuel pressure check until it touches
the No.1 spool on fuel tube.
• Use NISSAN genuine hose clamp (part number: 16439
N4710 or 16439 40U00).
• When reconnecting fuel line, always use new clamps.
• Use a torque driver to tighten clamps.
• Install hose clamp to the position within 1 - 2 mm (0.04 - 0.08 in).
• Make sure that clamp screw does not contact adjacent parts.
5.
Connect fuel tube adapter to quick connector.
6.
After connecting fuel hose for fuel pressure check, pull the hose with a force of approximately 98 N (10 kg,
22 lb) to confirm fuel tube does not come off.
7.
Turn ignition switch ON and check for fuel leakage.
8.
Start engine and check for fuel leakage.
9.
Read the indication of fuel pressure gauge.
CAUTION:
• Do not perform fuel pressure check with system operating. Fuel pressure gauge may indicate
false readings.
• During fuel pressure check, confirm for fuel leakage from fuel connection every 3 minutes.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK FUEL HOSE AND FUEL TUBE
If result is unsatisfactory, check fuel hoses and fuel tubes for clogging.
Is the inspection result normal?
YES
>> Replace “fuel filter and fuel pump assembly”.
NO
>> Repair or replace.
5 : No.2 spool
Tightening torque
: 1 - 1.5 N·m (0.1 - 0.15 kg-m, 9 - 13 in-lb)
At idling
: Approximately 450 kPa (4.5 bar, 4.59 kg/cm
2
, 65.25 psi)
JSBIA1842GB
POWER SUPPLY AND GROUND CIRCUIT
ECH-123
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
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DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000010379054
1.
INSPECTION START
Start engine.
Is engine running?
YES
>> GO TO 6.
NO
>> GO TO 2.
2.
CHECK GROUND CONNECTION-I
1.
Turn ignition switch OFF.
2.
Check ground connection E4. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace ground connection.
3.
CHECK ECM POWER SUPPLY CIRCUIT-I
1.
Turn ignition switch ON.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• 15A fuse (No. 56)
• Harness for open or short between ECM and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-I
1.
Disconnect ECM harness connectors.
2.
Check the continuity between ECM harness connector and ground.
3.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair open circuit or short to power in harness or connectors.
ECM
Voltage
+
–
Connector
Terminal
Connector
Terminal
E9
16
E9
25
Battery voltage
29
32
ECM
Ground
Continuity
Connector
Terminal
E9
25
Ground
Existed
29
32
ECH-124
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
POWER SUPPLY AND GROUND CIRCUIT
6.
CHECK ECM POWER SUPPLY CIRCUIT-II
1.
Turn ignition switch OFF and wait at least 12 minutes.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 12.
NO-1
>> Battery voltage does not exist: GO TO 7.
NO-2
>> Battery voltage exists for more than a few seconds: GO TO 10.
7.
CHECK ECM POWER SUPPLY CIRCUIT-III
1.
Turn ignition switch OFF and wait at least 12 minutes.
2.
Check the voltage between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 10.
8.
CHECK ECM POWER SUPPLY CIRCUIT-IV
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 9.
9.
DETECT MALFUNCTIONING PART
Check the following.
• Harness or connectors E8, F21
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK ECM POWER SUPPLY CIRCUIT-V
1.
Disconnect ECM harness connector.
2.
Disconnect IPDM E/R harness connector.
3.
Check the continuity between ECM harness connector and IPDM E/R harness connector.
ECM
Ground
Voltage
Connector
Terminal
E9
28
Ground
After turning ignition switch OFF, battery volt-
age will exist for a few seconds, then drop ap-
proximately 0 V.
F17
93
ECM
Ground
Voltage
Connector
Terminal
F18
111
Ground
Battery voltage
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E9
28
F90
96
Existed
F17
93
105
Existed
POWER SUPPLY AND GROUND CIRCUIT
ECH-125
< DTC/CIRCUIT DIAGNOSIS >
[HRA2DDT]
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4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
• Harness for open or short between ECM and IPDM E/R
>> Repair open circuit or short to ground or short to power in harness or connectors.
12.
CHECK GROUND CONNECTION-II
1.
Turn ignition switch OFF.
2.
Check ground connection E4. Refer to Ground Inspection in
.
Is the inspection result normal?
YES
>> GO TO 13.
NO
>> Repair or replace ground connection.
13.
CHECK ECM GROUND CIRCUIT FOR OPEN AND SHORT-II
1.
Disconnect ECM harness connector.
2.
Check the continuity between ECM harness connector and ground.
3.
Also check harness for short to power.
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> Repair open circuit or short power in harness or connectors.
14.
CHECK INTERMITTENT INCIDENT
GI-41, "Intermittent Incident"
, “INCIDENT SIMULATION TESTS” and “GROUND INSPECTION”.
Is the inspection result normal?
YES
>> Replace IPDM E/R. Refer to
.
NO
>> Repair open circuit or short to power in harness or connectors.
ECM
IPDM E/R
Continuity
Connector
Terminal (Polarity)
Connector
Terminal (Polarity)
F18
111
F89
77
Existed
ECM
Ground
Continuity
Connector
Terminal
E9
25
Ground
Existed
29
32
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