Work Procedure
1.INSPECTION START

Ensure engine stays below 1,000 rpm.

Is any DTC detected? YES >> GO TO 2.
NO >> GO TO 3.

2.REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
>> GO TO 3.
3.CHECK TARGET IDLE SPEED
For procedure, refer to EC-493, "Inspection".
For specification, refer to EC-500, "Idle Speed".
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 4.

4.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
>> GO TO 5.
5.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-140, "Work Procedure".
>> GO TO 6.
6.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-141, "Work Procedure".
Is Idle Air Volume Learning carried out successfully? YES >> GO TO 7.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
7.CHECK TARGET IDLE SPEED AGAIN
For procedure, refer to EC-493, "Inspection".
For specification, refer to EC-500, "Idle Speed".
Is the inspection result normal? YES >> GO TO 10.
NO >> GO TO 8.
8.DETECT MALFUNCTIONING PART
Check the Following.
Is the inspection result normal? YES >> GO TO 9.
NO >> Repair or replace. Then GO TO 4
9.CHECK ECM FUNCTION
>> GO TO 4.
10.CHECK IGNITION TIMING
For procedure, refer to EC-494, "Inspection" For specification, refer to EC-500, "Ignition Timing".

1 Timing indicator
Is the inspection result normal? YES >> INSPECTION END.
NO >> GO TO 11.
11.PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
>> GO TO 12.
12.PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform EC-140, "Work Procedure".
>> GO TO 13.
13.PERFORM IDLE AIR VOLUME LEARNING
Perform EC-141, "Work Procedure".
Is Idle Air Volume Learning carried out successfully? YES >> GO TO 14.
NO >> Follow the instruction of Idle Air Volume Learning. Then GO TO 4.
14.CHECK TARGET IDLE SPEED AGAIN
For procedure, refer to EC-493, "Inspection".
For specification, refer to EC-500, "Idle Speed".
Is the inspection result normal? YES >> GO TO 15.
NO >> GO TO 17.
15.CHECK IGNITION TIMING AGAIN
For procedure, refer to EC-494, "Inspection".
For specification, refer to EC-500, "Ignition Timing".

1 Timing indicator
Is the inspection result normal? YES >> INSPECTION END.
NO >> GO TO 16.
16.CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to EM-45, "Removal and Installation".
Is the inspection result normal? YES >> GO TO 17.
NO >> Repair the timing chain installation. Then GO TO 4.
17.DETECT MALFUNCTIONING PART
Check the following.
Is the inspection result normal? YES >> GO TO 18.
NO >> Repair or replace. Then GO TO 4
18.CHECK ECM FUNCTION
>> GO TO 4.
Diagnosis and repair workflow
Additional service when replacing ECMPrecaution
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT
PRE-TENSIONER"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
...
Fuel pump
Description
Sensor
Input signal to ECM
ECM Function
Actuator
Crankshaft position sensor (POS)
Camshaft position sensor (PHASE)
Engine speed*
Fuel pump control
Fuel pump relay↓
Fuel pump
Battery
Battery voltage*
*: ECM determines the st ...
Electric power steering
WARNING
If the engine is off while driving, power
steering assist will stop working, and
steering will require significantly more
effort.
If the electric power steering warning
light illuminates while the engine is
running, power assist will stop.
You will still be able to steer the Nissan ...