Basic Inspection

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 leakage
   • Air cleaner clogging
   • Gasket
   Fig 1: Checking Harness Connectors For Improper Connections

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Check that electrical or mechanical loads are not applied.
   • 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 to the middle of gauge.

   Check that engine stays below 1, 000 RPM.

   Fig 2: Identifying Engine Coolant Temperature

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. Run engine at approximately 2, 000 RPM for approximately 2 minutes under no load.
6. Check that no DTC is displayed with CONSULT-III or GST.

OK or NG 

OK: GO TO  3.

NG: GO TO 2.

Fig 3: Identifying Engine RPM

Courtesy of NISSAN MOTOR CO., U.S.A.

Repair or replace components as necessary according to corresponding Diagnostic Procedure.

GO TO 3

1. Run engine at approximately 2, 000 RPM for approximately 2 minutes under no load.
2. Rev engine between 2, 000 and 3, 000 RPM two or three times under no load, then run engine at idle speed for approximately 1 minute.
3. Check idle speed.

Refer to "IDLE SPEED AND IGNITION TIMING CHECK ".

650 ± 50 RPM (in P or N position) 

Fig 4: Checking Target Idle Speed

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO  10.

NG: GO TO 4.

1. Stop engine.
2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".

GO TO 5.

Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".

GO TO 6.

Refer to "IDLE AIR VOLUME LEARNING ".

Is Idle Air Volume Learning carried out successfully? 

Yes or No 

Yes: GO TO  7.

No:

1. Follow the instructions of Idle Air Volume Learning.
2. GO TO  4.

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

Refer to "IDLE SPEED AND IGNITION TIMING CHECK ".

650 ± 50 RPM (in P or N position) 

OK or NG 

OK: GO TO  10.

NG: GO TO 8.

Check the Following.

• Check camshaft position sensor (PHASE) and circuit. Refer to "DTC CONFIRMATION PROCEDURE ".
• Check crankshaft position sensor (POS) and circuit. Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG 

OK: GO TO  9.

NG:

1. Repair or replace malfunctioning part.
2. GO TO  4.

1. Substitute with non-malfunctioning ECM to check ECM function. (ECM may be the cause of the incident, although this is rare.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to "ECM RE-COMMUNICATING FUNCTION ".

GO TO  4.

1. Run engine at idle.
2. Check ignition timing with a timing light.

Refer to "IDLE SPEED AND IGNITION TIMING CHECK ".

• Timing indicator (1)

12 ± 5°BTDC (in P or N position) 

Fig 5: Identifying Timing Indicator

Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO  19.

NG: GO TO 11.

1. Stop engine.
2. Perform "ACCELERATOR PEDAL RELEASED POSITION LEARNING ".

GO TO 12.

Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".

GO TO 13.

Refer to "IDLE AIR VOLUME LEARNING ".

Is Idle Air Volume Learning carried out successfully? 

Yes or No 

Yes: GO TO  14.

No:

1. Follow the instructions of Idle Air Volume Learning.
2. GO TO  4.

1. Start engine and warm it up to normal operating temperature.
2. Check idle speed.

Refer to "IDLE SPEED AND IGNITION TIMING CHECK ".

650 ± 50 RPM (in P or N position) 

OK or NG 

OK: GO TO 15.

NG: GO TO  17.

1. Run engine at idle.
2. Check ignition timing with a timing light.

Refer to "IDLE SPEED AND IGNITION TIMING CHECK ".

• Timing indicator (1)

12 ± 5°BTDC (in P or N position) 

OK or NG 

OK: GO TO  19.

NG: GO TO 16.

Fig 6: Identifying Timing Indicator

Courtesy of NISSAN MOTOR CO., U.S.A.

Check timing chain installation. Refer to "REMOVAL AND INSTALLATION ".

OK or NG 

OK: GO TO  17.

NG:

1. Repair the timing chain installation.
2. GO TO  4.

Check the following.

• Check camshaft position sensor (PHASE) and circuit. Refer to "DTC CONFIRMATION PROCEDURE ".
• Check crankshaft position sensor (POS) and circuit. Refer to "DTC CONFIRMATION PROCEDURE ".

OK or NG 

OK: GO TO  18.

NG:

1. Repair or replace malfunctioning part.
2. GO TO  4.

1. Substitute with non-malfunctioning ECM to check ECM function. (ECM may be the cause of the incident, although this is rare.)
2. Perform initialization of IVIS (NATS) system and registration of all IVIS (NATS) ignition key IDs. Refer to "ECM RE-COMMUNICATING FUNCTION ".

GO TO  4.

If ECM is replaced during this Basic Inspection procedure, perform "PROCEDURE AFTER REPLACING ECM ".

INSPECTION END