Nissan Juke F15. Instruction — part 343
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-185
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
1. Check for the cause of large engine friction. Refer to the following.
-
Engine oil level is too high
-
Engine oil viscosity
-
Belt tension of power steering, alternator, A/C compressor, etc. is excessive
-
Noise from engine
-
Noise from transmission, etc.
2. Check for the cause of insufficient combustion. Refer to the following.
-
Valve clearance malfunction
-
Intake valve timing control function malfunction
-
Camshaft sprocket installation malfunction, etc.
>> Repair or replace malfunctioning part, and then GO TO 27.
16.
CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
• Crushed air ducts
• Malfunctioning seal of air cleaner element
• Uneven dirt of air cleaner element
• Improper specification of intake air system
Is the inspection result normal?
YES
>> GO TO 21.
NO
>> Repair or replace malfunctioning part, and then GO TO 17.
17.
CHECK “A/F ALPHA-B1”, AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1” and “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that
each indication is within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> “B/FUEL SCHDL” is more, “A/F ALPHA-B1” is less than the SP value: GO TO 18.
18.
DISCONNECT AND RECONNECT MASS AIR FLOW SENSOR HARNESS CONNECTOR
1. Stop the engine.
2. Disconnect mass air flow sensor harness connector.
3. Check pin terminal and connector for damage and then reconnect it again.
>> GO TO 19.
19.
CHECK “A/F ALPHA-B1”
1. Start engine.
2. Select “A/F ALPHA-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within
the SP value.
Is the measurement value within the SP value?
YES
>> Detect malfunctioning part of mass air flow sensor circuit and repair it. Refer to
. Then GO TO 26.
NO
>> GO TO 20.
20.
CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES
>> GO TO 21.
NO
>> More than the SP value: Replace mass air flow sensor, and then GO TO 26.
21.
REPLACE ECM
1. Replace ECM. Refer to
EC-590, "Removal and Installation"
2. Perform
>> GO TO 26.
EC-186
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
22.
CHECK INTAKE SYSTEM
Check for the cause of uneven air flow through mass air flow sensor. Refer to the following.
• Crushed air ducts
• Malfunctioning seal of air cleaner element
• Uneven dirt of air cleaner element
• Improper specification of intake air system
Is the inspection result normal?
YES
>> GO TO 24.
NO
>> Repair or replace malfunctioning part, and then GO TO 23.
23.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Less than the SP value: GO TO 24.
24.
CHECK “MAS A/F SE-B1”
Select “MAS A/F SE-B1” in “SPEC” of “DATA MONITOR” mode, and make sure that the indication is within the
SP value.
Is the measurement value within the SP value?
YES
>> GO TO 25.
NO
>> Less than the SP value: Replace mass air flow sensor, and then GO TO 27.
25.
CHECK INTAKE SYSTEM
Check for the cause of air leak after the mass air flow sensor. Refer to the following.
• Disconnection, looseness, and cracks in air duct
• Looseness of oil filler cap
• Disconnection of oil level gauge
• Open stuck, breakage, hose disconnection, or cracks of PCV valve
• Disconnection or cracks of EVAP purge hose, open stuck of EVAP canister purge volume control solenoid
valve
• Malfunctioning seal of rocker cover gasket
• Disconnection, looseness, or cracks of hoses, such as vacuum hose, connecting to intake air system parts
• Malfunctioning seal of intake air system, etc.
>> GO TO 27.
26.
CHECK “A/F ALPHA-B1” AND “B/FUEL SCHDL”
Select “A/F ALPHA-B1” and “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and make sure that
each indication is within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Detect malfunctioning part according to
.
27.
CHECK “B/FUEL SCHDL”
Select “B/FUEL SCHDL” in “SPEC” of “DATA MONITOR” mode, and then make sure that the indication is
within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Detect malfunctioning part according to
.
POWER SUPPLY AND GROUND CIRCUIT
EC-187
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000012197740
1.
CHECK FUSE
Check that the following fuse is not blowing.
Is the fuse blown (open)?
YES
>> If the replaced fuse is blown again. Check IPDM E/R power supply.
NO
>> GO TO 2.
2.
CHECK GROUND CONNECTION
1. Turn ignition switch OFF.
2. Check ground connection E21 and E38. Refer to
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace ground connection.
3.
CHECK ECM GROUND CIRCUIT
1. Disconnect ECM harness connectors.
2. Check the continuity between ECM harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace error-detected parts.
4.
CHECK ECM POWER SUPPLY (MAIN)-I
1. Reconnect ECM harness connector.
2. Turn ignition switch ON.
3. Check the voltage between ECM harness connector terminals.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 6.
5.
CHECK ECM POWER SUPPLY (MAIN)-II
1. Turn ignition switch OFF and wait at least 10 seconds.
Location
Fuse No.
Capacity
IPDM E/R
#43
20 A
#62
15 A
+
−
Continuity
ECM
Connector
Terminal
F25
1
Ground
Existed
2
E18
123
124
127
ECM
Voltage
Connector
+
−
Terminal
E18
121
127
Battery voltage
EC-188
< DTC/CIRCUIT DIAGNOSIS >
[MR FOR NISMO RS MODELS]
POWER SUPPLY AND GROUND CIRCUIT
2. Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal?
YES
>> GO TO 9.
NO
>> GO TO 7.
6.
CHECK ECM POWER SUPPLY (MAIN) CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connectors.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground.
Is the inspection result normal?
YES
>> Perform the trouble diagnosis for IPDM E/R power supply circuit.
NO
>> Repair or replace error-detected parts.
7.
CHECK ECM RELAY CONTROL SIGNAL
Check the voltage between ECM harness connector terminals as per the following.
Is the inspection result normal?
YES
>> Check Intermittent Incident. Refer to
GI-45, "Intermittent Incident"
.
NO
>> GO TO 8.
8.
CHECK ECM RELAY CONTROL SIGNAL CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Disconnect IPDM E/R harness connector.
4. Check the continuity between ECM harness connector and IPDM E/R harness connector.
5. Also check harness for short to ground and to power.
ECM
Condition
Voltage
(Approx.)
Connector
+
−
Terminal
E18
121
127
After turning ignition switch
OFF, battery voltage will ex-
ist for a few seconds
Drop to 0 V
+
−
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
E18
121
E14
35
Existed
ECM
Condition
Voltage
(Approx.)
Connector
+
−
Terminal
E18
112
127
Ignition switch ON
0 V
Turn ignition switch OFF
and wait at least 10 sec-
onds.
Battery voltage
+
−
Continuity
ECM
IPDM E/R
Connector
Terminal
Connector
Terminal
E18
112
E14
41
Existed
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст