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 Connector Connection

     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: Checking Engine Coolant Temperature

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. Run engine at about 2,000 RPM for about 2 minutes under noload.
6. Make sure that no DTC is displayed with CONSULT-II or GST.

OK or NG

1. OK: GO TO  3.
2. NG: GO TO 2.
   Fig 3: Checking Speed

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

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

1. : GO TO 3.

With CONSULT-II 

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: Checking Target Idle Speed

   Courtesy of NISSAN MOTOR CO., U.S.A.
3. Read idle speed in "DATA MONITOR" mode with CONSULT-II.

   A/T: 650 +/- 50 RPM (in P or N position) 

   M/T: 650 +/- 50 RPM 

   Fig 5: Reading Idle Speed In "Data Monitor" Mode With Consult-II

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

Without CONSULT-II 

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.

   A/T: 650 +/- 50 RPM (in P or N position) 

   M/T: 650 +/- 50 RPM 

OK or NG

1. OK: GO TO  10.
2. NG: GO TO 4.

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

1. : GO TO 5.

Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".

1. : GO TO 6.

Refer to "IDLE AIR VOLUME LEARNING ".

Is Idle Air Volume Learning carried out successfully? 

Yes or No

1. YES: GO TO 7.
2. NO:
   1. Follow the instruction of Idle Air Volume Learning.
   2. GO TO  4.

With CONSULT-II 

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

   A/T: 650 +/- 50 RPM (in P or N position) 

   M/T: 650 +/- 50 RPM 

Without CONSULT-II 

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

   A/T: 650 +/- 50 RPM (in P or N position) 

   M/T: 650 +/- 50 RPM 

OK or NG

1. OK: GO TO  10.
2. NG: GO TO 8.

Check the following.

• Check camshaft position sensor (PHASE) and circuit. Refer to DTC P0340, P0345 CMP SENSOR (PHASE) .
• Check crankshaft position sensor (POS) and circuit. Refer to DTC P0335 CKP SENSOR (POS) .

OK or NG

1. OK: GO TO 9.
2. NG: Go to next step.
   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 .

1. : GO TO  4.

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

   A/T: 15 +/- 5° BTDC (in P or N position) 

   M/T: 15 +/- 5° BTDC 

OK or NG

1. OK: GO TO  19.
2. NG: GO TO 11.
   Fig 6: Checking Ignition Timing

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

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

1. : GO TO 12.

Perform "THROTTLE VALVE CLOSED POSITION LEARNING ".

1. : GO TO 13.

Refer to "IDLE AIR VOLUME LEARNING ".

Is Idle Air Volume Learning carried out successfully? 

Yes or No

1. YES: GO TO 14.
2. NO:
   1. Follow the instruction of Idle Air Volume Learning.
   2. GO TO  4.

With CONSULT-II 

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

   A/T: 650 +/- 50 RPM (in P or N position) 

   M/T: 650 +/- 50 RPM 

Without CONSULT-II 

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

   A/T: 650 +/- 50 RPM (in P or N position) 

   M/T: 650 +/- 50 RPM 

OK or NG

1. OK: GO TO 15.
2. NG: GO TO  17.

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

   A/T: 15 +/- 5° BTDC (in P or N position) 

   M/T: 15 +/- 5° BTDC 

OK or NG

1. OK: GO TO  19.
2. NG: GO TO 16.
   Fig 7: Checking Ignition Timing Again

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

Check timing chain installation. Refer to TIMING CHAIN .

OK or NG

1. OK: GO TO 17.
2. NG: Go to next step.
   1. Repair the timing chain installation.
   2. GO TO  4.

Check the following.

• Check camshaft position sensor (PHASE) and circuit. Refer to DTC P0340, P0345 CMP SENSOR (PHASE) .
• Check crankshaft position sensor (POS) and circuit. Refer to DTC P0335 CKP SENSOR (POS) .

OK or NG

1. OK: GO TO 18.
2. NG: Go to next step.
   1. Repair or replace.
   2. GO TO  4.

1. Substitute another known-good ECM to check ECM function. (ECM may be the cause of a 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 .

1. : GO TO  4.

Did you replace the ECM, referring this Basic Inspection procedure?

Yes or No

1. YES:
   1. Perform "VIN Registration ".
   2. INSPECTION END 
2. NO: INSPECTION END