Nissan Tiida C11. Instruction — part 368
EC-122
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
>> GO TO 22.
22.
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 29.
NO
>> GO TO 23.
23.
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 24.
NO
>> More than the SP value: Replace mass air flow sensor, and then GO TO 29.
24.
REPLACE ECM
1.
Replace ECM.
2.
Go to
EC-25, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
>> GO TO 29.
25.
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 27.
NO
>> Repair or replace malfunctioning part, and then GO TO 26.
26.
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 27.
27.
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 28.
NO
>> Less than the SP value: Replace mass air flow sensor, and then GO TO 30.
28.
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
TROUBLE DIAGNOSIS - SPECIFICATION VALUE
EC-123
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
• 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 30.
29.
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 the
indication is within the SP value.
Is the measurement value within the SP value?
YES
>> INSPECTION END
NO
>> Detect malfunctioning part according to
30.
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
EC-124
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
Diagnosis Procedure
INFOID:0000000001670889
1.
INSPECTION START
Start engine.
Is engine running?
YES
>> GO TO 8.
NO
>> GO TO 2.
2.
CHECK GROUND CONNECTION-I
1.
Turn ignition switch OFF.
2.
Check ground connection E15. 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 OFF and then ON.
2.
Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
• 10A fuse (No. 55)
• 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 7.
NO
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
(+)
(–)
Voltage
Connector
Terminal
Connector
Terminal
E16
93
F10
10
Battery voltage
11
E16
108
ECM
Ground
Continuity
Connector
Terminal
F10
10
Ground
Existed
11
E16
108
POWER SUPPLY AND GROUND CIRCUIT
EC-125
< COMPONENT DIAGNOSIS >
[HR16DE (WITH EURO-OBD)]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
• Harness connectors F8, E8
• Harness for open or short between ECM and ground
>> Repair open circuit or short to power in harness or connectors.
7.
CHECK ECM POWER SUPPLY CIRCUIT-II
1.
Reconnect ECM harness connectors.
2.
Turn ignition switch ON.
3.
Check the voltage between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> Go to
NO
>> GO TO 8.
8.
CHECK ECM POWER SUPPLY CIRCUIT-III
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES
>> GO TO 14.
NO-1
>> Battery voltage does not exist: GO TO 9.
NO-2
>> Battery voltage exists for more than a few seconds: GO TO 11.
9.
CHECK ECM POWER SUPPLY CIRCUIT-IV
1.
Turn ignition switch OFF and wait at least 10 seconds.
2.
Check the voltage between ECM harness connector terminals as follows.
Is the inspection result normal?
YES
>> GO TO 10.
NO
>> GO TO 11.
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.
4.
Also check harness for short to ground and short to power.
Is the inspection result normal?
YES
>> GO TO 12.
IPDM E/R
Ground
Voltage
Connector
Terminal
E43
3
Ground
Battery voltage
(+)
(–)
Voltage
Connector
Terminal
Connector
Terminal
E16
105
E16
108
After turning ignition switch OFF, battery volt-
age will exist for a few seconds, then drop ap-
proximately 0V.
(+)
(–)
Voltage
Connector
Terminal
Connector
Terminal
F10
32
E16
108
Battery voltage
ECM
IPDM E/R
Continuity
Connector
Terminal
Connector
Terminal
E16
105
E43
4
Existed
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