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EC-344
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P0506 ISC SYSTEM
3. Perform
EC-23, "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
>> INSPECTION END
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DescriptionINFOID:0000000005398505
The ECM controls the engine idle speed to a specified level NISSAN TIIDA 2010 Service Repair Manual P0507 ISC SYSTEMEC-345
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The ECM controls the engine idle speed to a specified level](/manual-img/5/57397/w960_57397-1609.png)
P0507 ISC SYSTEMEC-345
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P0507 ISC SYSTEM
DescriptionINFOID:0000000005398505
The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric thrott
le control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idli ng speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration, and engine load (air conditioner, power steering and cooling fan
operation, etc.).
DTC LogicINFOID:0000000005398506
DTC DETECTION LOGIC
NOTE:
If DTC P0507 is displayed with ot her DTC, first perform the trouble diagnosis for the other DTC.
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
If the target idle speed is ou t of the specified value, perform EC-26, "
IDLE AIR VOLUME LEARNING :
Special Repair Requirement", before conducting DTC Confirmation Procedure.
TESTING CONDITION:
• Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
• Always perform the test at a temperature above −10° C(14° F).
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine and warm it up to normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and run it for at least 1 minute at idle speed.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-345, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000005398507
1.CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair or replace.
2.CHECK INTAKE AIR LEAK
1. Start engine and let it idle.
2. Listen for an intake air leak after the mass air flow sensor.
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P0507 Idle speed control system
RPM higher than expected The idle speed is more than the target idle
speed by 200 rpm or more. • Electric throttle
control actuator
• Intake air leak
• PCV system
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EC-346
< COMPONENT DIAGNOSIS >[HR16DE]
P0507 ISC SYSTEM
Is intake air leak detected?
YES >> Discover air leak location and repair.
NO >> GO TO 3.
3.REPLACE ECM
1. Stop engine.
2. Replace ECM.
3. Perform EC-23, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
>> INSPECTION END
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ECM has the memory function of the DTC memory, t NISSAN TIIDA 2010 Service Repair Manual P0603 ECM POWER SUPPLYEC-347
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ECM has the memory function of the DTC memory, t](/manual-img/5/57397/w960_57397-1611.png)
P0603 ECM POWER SUPPLYEC-347
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P0603 ECM POWER SUPPLY
DescriptionINFOID:0000000005398508
ECM has the memory function of the DTC memory, the air-fuel ratio
feedback compensation value memory, the idle air volume learning
value memory, etc. even when the ignition switch is turned ON.
DTC LogicINFOID:0000000005398509
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON wait at least 10 seconds.
2. Turn ignition switch OFF and wait at least 5 minutes.
3. Turn ignition switch ON, wait at least 10 seconds.
4. Repeat steps 2 and 3 for five times.
5. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-347, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000005398510
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Erase DTC. Refer to “How to Erase DTC and 1st Trip DTC” in EC-84, "
Diagnosis Description".
3. Perform DTC CONFIRMATION PROCEDURE. Refer to EC-347, "
DTC Logic".
Is the 1st trip DTC P0603 displayed again?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform EC-23, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
PBIA9222J
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P0603 Engine control module ECM back-up RAM system does not function
properly. •ECM
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EC-348
< COMPONENT DIAGNOSIS >[HR16DE]
P0603 ECM POWER SUPPLY
>> INSPECTION END
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P0605 ECM
DescriptionINFOID:0000000005398511
The ECM consists of a microcomputer and connectors for signal
input and ou NISSAN TIIDA 2010 Service Repair Manual P0605 ECMEC-349
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The ECM consists of a microcomputer and connectors for signal
input and ou](/manual-img/5/57397/w960_57397-1613.png)
P0605 ECMEC-349
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P0605 ECM
DescriptionINFOID:0000000005398511
The ECM consists of a microcomputer and connectors for signal
input and output and for power supply. The ECM controls the engine.
DTC LogicINFOID:0000000005398512
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PRECONDITIONING
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
>> GO TO 2.
2.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION A
1. Turn ignition switch ON.
2. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-350, "Diagnosis Procedure".
NO >> GO TO 3.
3.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION B
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-350, "Diagnosis Procedure".
NO >> GO TO 4.
4.PERFORM DTC CONFIRMATION PROCEDURE FOR MALFUNCTION C
1. Turn ignition switch ON and wait at least 1 second.
2. Turn ignition switch OFF, wait at least 10 seconds and then turn ON.
3. Repeat step 2 for 32 times.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES >> Go to EC-350, "Diagnosis Procedure".
NO >> INSPECTION END
PBIA9222J
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P0605 Engine control module A) ECM calculation function is malfunctioning.
•ECM
B) ECM EEP-ROM system is malfunctioning.
C) ECM self shut-off function is malfunctioning.
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EC-350
< COMPONENT DIAGNOSIS >[HR16DE]
P0605 ECM
Diagnosis Procedure
INFOID:0000000005398513
1.INSPECTION START
1. Turn ignition switch ON.
2. Erase 1st trip DTC. Refer to “How to Erase DTC and 1st Trip DTC” in EC-84, "
Diagnosis Description".
3. Perform DTC CONFIRMATION PROCEDURE. Refer to EC-349, "
DTC Logic".
Is the 1st trip DTC P0605 displayed again?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform EC-23, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
>> INSPECTION END
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CAN (Controller Area Network) is a serial communication line for real time NISSAN TIIDA 2010 Service Repair Manual P0607 ECMEC-351
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CAN (Controller Area Network) is a serial communication line for real time](/manual-img/5/57397/w960_57397-1615.png)
P0607 ECMEC-351
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DescriptionINFOID:0000000005398514
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each
control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
DTC LogicINFOID:0000000005398515
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Check DTC.
Is DTC detected?
YES >> Go to EC-351, "Diagnosis Procedure".
NO >> INSPECTION END
Diagnosis ProcedureINFOID:0000000005398516
1.INSPECTION START
1. Turn ignition switch ON.
2. Erase DTC. Refer to “How to Erase DTC and 1st Trip DTC” in EC-84, "
Diagnosis Description".
3. Perform DTC CONFIRMATION PROCEDURE. Refer to EC-351, "
DTC Logic".
4. Check DTC.
Is the DTC P0607 displayed again?
YES >> GO TO 2.
NO >> INSPECTION END
2.REPLACE ECM
1. Replace ECM.
2. Perform EC-23, "
ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : Special Repair Require-
ment".
>> INSPECTION END
DTC No. Trouble diagnosis name DTC detecting conditionPossible cause
P0607 CAN communication bus When detecting error during the initial diagnosis
of CAN controller of ECM.
•ECM
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