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
     Fig 1: Checking Improper Harness Connectors

     Courtesy of NISSAN MOTOR CO., U.S.A.
   • 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.
   • 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.
4. Start engine and warm it up until engine coolant temperature indicator points the middle of gauge.
   Fig 2: Starting Engine & Warming It Up Until Engine Coolant Temperature Indicator Points To Middle Of Gauge

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

   Ensure engine stays below 1,000 RPM.

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-II or GST.

OK or NG

OK: GO TO  3.

NG: GO TO 2.

Fig 3: Running Engine At About 2,000 RPM For 2 Minutes Under No Load

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

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

: 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 On Engine RPM Meter

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

   650+/-50 RPM (in P or N position) 

   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.

   650+/-50 RPM (in P or N position) 

OK or NG

OK: GO TO  9.

NG: GO TO 4.

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

: GO TO STEP 5.

Perform THROTTLE VALVE CLOSED POSITION LEARNING .

GO TO STEP 6.

Refer to IDLE AIR VOLUME LEARNING .

Is Idle Air Volume Learning carried out successfully? 

Yes or No

Yes GO TO STEP 7.

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.

   650+/-50 RPM (in P or N position) 

Without CONSULT-II 

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

   650+/-50 RPM (in P or N position) 

OK or NG

OK: GO TO  10.

NG: GO TO STEP 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 STEP 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 NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS .

: GO TO  4.

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

   15+/-5° BTDC (in P or N position) 

OK or NG

OK: INSPECTION END

NG: GO TO STEP 11.

Fig 6: Checking Ignition Timing

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

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

: GO TO STEP 12.

Perform THROTTLE VALVE CLOSED POSITION LEARNING .

: GO TO STEP 13.

Refer to IDLE AIR VOLUME LEARNING .

Is Idle Air Volume Learning carried out successfully? 

Yes or No

Yes: GO TO STEP 14.

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.

   650+/-50 RPM (in P or N position) 

Without CONSULT-II 

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

   650+/-50 RPM (in P or N position) 

OK or NG

OK: GO TO STEP 15.

NG: GO TO  17.

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

   15+/-5° BTDC (in P or N position) 

OK or NG

OK: INSPECTION END

NG: GO TO STEP 16.

Fig 7: Checking Ignition Timing

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

Check timing chain installation. Refer to TIMING CHAIN .

OK or NG

OK: GO TO STEP 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 STEP 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 NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS .

   : GO TO  4.