BASIC INSPECTION : Special Repair Requirement

INSPECTION START
1. Check service records for any recent repairs that may indicate a related malfunction, or a current need for scheduled maintenance.
2. Open engine hood and check the following:
  - Harness connectors for improper connections
  - Wiring harness for improper connections, pinches and cut
  - Vacuum hoses for splits, kinks and improper connections
  - Hoses and ducts for leaks
  - Air cleaner clogging
  - Gasket
3. Confirm that electrical or mechanical loads are not applied.
  
  Fig 1: Checking Wiring Harness For Improper Connections
  Courtesy of NISSAN MOTOR CO., U.S.A.
  - Headlamp switch is OFF.
  - Air conditioner switch is OFF.
  - Rear window defogger switch is OFF.
  - Steering wheel is in the straight-ahead position, etc.
4. Start engine and warm it up until engine coolant temperature indicator points the middle of gauge.
  Ensure engine stays below 1, 000 rpm.
  
  Fig 2: Identifying Engine Coolant Temperature
  Courtesy of NISSAN MOTOR CO., U.S.A.
5. Run engine at about 2, 000 rpm for about 2 minutes under no load.
6. Check that no DTC is displayed with CONSULT-III or GST.
Fig 3: Identifying Engine RPM
Courtesy of NISSAN MOTOR CO., U.S.A.

Is any DTC detected?

YES: GO TO 2.

NO: GO TO 3.
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnosis Procedure.

GO TO 3
CHECK TARGET IDLE SPEED
1. Run engine at about 2, 000 rpm for about 2 minutes under no load.
2. Rev engine (2, 000 to 3, 000 rpm) two or three times under no load, then run engine at idle speed for about 1 minute.
3. Check idle speed.
  For procedure, refer to "IDLE SPEED : SPECIAL REPAIR REQUIREMENT ".
  
  For specification, refer to "IDLE SPEED ".
  
  Fig 4: Checking Target Idle Speed
  Courtesy of NISSAN MOTOR CO., U.S.A.
Is the inspection result normal?

YES: GO TO 10.

NO: GO TO 4.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING : SPECIAL REPAIR REQUIREMENT ".
  GO TO 5.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform "THROTTLE VALVE CLOSED POSITION LEARNING : SPECIAL REPAIR REQUIREMENT ".

GO TO 6.
PERFORM IDLE AIR VOLUME LEARNING
Perform "IDLE AIR VOLUME LEARNING : SPECIAL REPAIR REQUIREMENT ".

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.
CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
  For procedure, refer to "IDLE SPEED : SPECIAL REPAIR REQUIREMENT ".
  
  For specification, refer to "IDLE SPEED ".
Is the inspection result normal?

YES: GO TO 10.

NO: GO TO 8.
DETECT MALFUNCTIONING PART
Check the Following.
- Check camshaft position sensor (PHASE) and circuit. Refer to "COMPONENT INSPECTION ".
- Check crankshaft position sensor (POS) and circuit. Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?

YES: GO TO 9.

NO: Repair or replace malfunctioning part. Then GO TO 4.
CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to "ECM RE-COMMUNICATING FUNCTION : SPECIAL REPAIR REQUIREMENT ".
  GO TO 4.
CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
  
  Fig 5: Checking Ignition Timing
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  For procedure, refer to "IGNITION TIMING : SPECIAL REPAIR REQUIREMENT ".
  
  For specification, refer to "IGNITION TIMING ".
Is the inspection result normal?

YES: GO TO 19.

NO: GO TO 11.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING : SPECIAL REPAIR REQUIREMENT ".
  GO TO 12.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform "THROTTLE VALVE CLOSED POSITION LEARNING : SPECIAL REPAIR REQUIREMENT ".

GO TO 13.
PERFORM IDLE AIR VOLUME LEARNING
Perform "IDLE AIR VOLUME LEARNING : SPECIAL REPAIR REQUIREMENT ".

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.
CHECK TARGET IDLE SPEED AGAIN
1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.
  For procedure, refer to "IDLE SPEED : SPECIAL REPAIR REQUIREMENT ".
  
  For specification, refer to "IDLE SPEED ".
Is the inspection result normal?

YES: GO TO 15.

NO: GO TO 17.
CHECK IGNITION TIMING AGAIN
1. Run engine at idle.
2. Check ignition timing with a timing light.
  
  Fig 6: Checking Ignition Timing
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  For procedure, refer to "IGNITION TIMING : SPECIAL REPAIR REQUIREMENT ".
  
  For specification, refer to "IGNITION TIMING ".
Is the inspection result normal?

YES: GO TO 19.

NO: GO TO 16.
CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to "REMOVAL AND INSTALLATION ".

Is the inspection result normal?

YES: GO TO 17.

NO: Repair the timing chain installation. Then GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Check camshaft position sensor (PHASE) and circuit. Refer to "COMPONENT INSPECTION ".
- Check crankshaft position sensor (POS) and circuit. Refer to "COMPONENT INSPECTION ".
Is the inspection result normal?

YES: GO TO 18.

NO: Repair or replace malfunctioning part. Then GO TO 4.
CHECK ECM FUNCTION
1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is a rare case.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to.
  GO TO 4.
INSPECTION END
If ECM is replaced during this BASIC INSPECTION procedure, go to "ADDITIONAL SERVICE WHEN REPLACING CONTROL UNIT : SPECIAL REPAIR REQUIREMENT ".

INSPECTION END