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 leaks
   • Air cleaner clogging
   • Gasket
3. Confirm 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.
     Fig 1: Checking Harness Connectors For Improper Connections

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

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. Run engine at about 2, 000 rpm for about 2 minutes under no load.
6. Make sure 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

With CONSULT-III 

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.
   Fig 4: Identifying Target Idle Speed

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Read idle speed in "DATA MONITOR" mode with CONSULT-III. Refer to "IDLE SPEED ".

   650 ± 50 rpm (in P or N position) 

Without CONSULT-III 

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.

   Refer to "IDLE SPEED ".

   650 ± 50 rpm (in P or N position) 

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 instruction of Idle Air Volume Learning.
2. GO TO  4.

With CONSULT-III 

1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in "DATA MONITOR" mode with CONSULT-III. Refer to "IDLE SPEED ".

   650 ± 50 rpm (in P or N position) 

Without CONSULT-III 

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

   Refer to "IDLE SPEED ".

   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 P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE) ".
• Check crankshaft position sensor (POS) and circuit. Refer to "DTC P0335 CKP SENSOR (POS) ".

OK or NG 

OK: GO TO 9.

NG:

1. Repair or replace.
2. GO TO  4.

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 ".

   >> GO TO  4.

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

   Refer to "IGNITION TIMING ".

   • Timing indicator (1)

     12 ± 5° BTDC (in P or N position) 

OK or NG 

OK: GO TO  19.

NG: GO TO 11.

Fig 5: Identifying Timing Indicator

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

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 instruction of Idle Air Volume Learning.
2. GO TO  4.

With CONSULT-III 

1. Start engine and warm it up to normal operating temperature.
2. Read idle speed in "DATA MONITOR" mode with CONSULT-III. Refer to "IDLE SPEED ".

   650 ± 50 rpm (in P or N position) 

Without CONSULT-III 

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

   Refer to "IDLE SPEED ".

   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 "IGNITION TIMING ".

   • 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 "TIMING CHAIN ".

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 P0340 CAMSHAFT POSITION (CMP) SENSOR (PHASE) ".
• Check crankshaft position sensor (POS) and circuit. Refer to "DTC P0335 CKP SENSOR (POS) ".

OK or NG 

OK: GO TO 18.

NG:

1. Repair or replace.
2. GO TO  4.

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 ".

   >> GO TO  4.

Did you replace ECM, referring this Basic Inspection procedure?

Yes or No 

Yes:

1. Perform "VIN REGISTRATION ".
2. INSPECTION END 

No: INSPECTION END