Work Procedure

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
3. Check that electrical or mechanical loads are not applied.
   • Head lamp 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: Identifying Vacuum Hoses For Splits, Kinks And Improper Connections

     Courtesy of NISSAN NORTH AMERICA, INC.
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 NORTH AMERICA, INC.
5. Run engine at approximately 2, 000 RPM for approximately 2 minutes under no load.
6. Check that no DTC is displayed with CONSULT or GST.

   Are any DTCs detected? 

   YES: GO TO 2.

   NO: GO TO  3.

   Fig 3: Identifying Engine RPM

   Courtesy of NISSAN NORTH AMERICA, INC.

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 (2, 000 to 3, 000 RPM) 2 or 3 times under no load, then run engine at idle speed for approximately 1 minute.
3. Check idle speed.

   For procedure, refer to "WORK PROCEDURE ".

   For specification, refer to "IDLE SPEED ".

   Is the inspection result normal? 

   YES: GO TO  10.

   NO: GO TO 4.

   Fig 4: Checking Target Idle Speed

   Courtesy of NISSAN NORTH AMERICA, INC.

1. Stop engine.
2. Perform "WORK PROCEDURE ".

   : GO TO 5.

Perform "WORK PROCEDURE ".

: GO TO 6.

Perform "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.

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

   For procedure, refer to "WORK PROCEDURE ".

   For specification, refer to "IDLE SPEED ".

   Is the inspection result normal? 

   YES: GO TO  10.

   NO: GO TO 8.

Check the Following.

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

  Is the inspection result normal? 

  YES: GO TO 9.

  NO: Repair or replace malfunctioning part. Then GO TO  4.

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

   : GO TO  4.

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

   For procedure, refer to "WORK PROCEDURE ".

   For specification, refer to "IGNITION TIMING ".

   Is the inspection result normal? 

   YES: GO TO  19.

   NO: GO TO 11.

1. Stop engine.
2. Perform "WORK PROCEDURE ".

   : GO TO 12.

Perform "WORK PROCEDURE ".

: GO TO 13.

Perform "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.

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

   For procedure, refer to "WORK PROCEDURE ".

   For specification, refer to "IDLE SPEED ".

   Is the inspection result normal? 

   YES: GO TO 15.

   NO: GO TO  17.

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

   For procedure, refer to "WORK PROCEDURE ".

   For specification, refer to "IGNITION TIMING ".

   Is the inspection result normal? 

   YES: GO TO  19.

   NO: GO TO 16.

Check timing chain installation. Refer to "INSPECTION ".

Is the inspection result normal? 

YES: GO TO 17.

NO: Repair the timing chain installation. Then GO TO  4.

Check the following.

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

  Is the inspection result normal? 

  YES: GO TO 18.

  NO: Repair or replace malfunctioning part. Then GO TO  4.

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

   : GO TO  4.

If ECM is replaced during this BASIC INSPECTION procedure, perform "WORK PROCEDURE ".

: INSPECTION END