Basic Inspection

INSPECTION START
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
  Fig 1: Identifying connector
  Courtesy of NISSAN MOTOR CO., U.S.A.
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.
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-II or GST.
  
  Fig 3: Identifying Run engine at about 2, 000 RPM
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK: GO TO 3.
2. NG: GO TO 2.
REPAIR OR REPLACE
Repair or replace components as necessary according to corresponding Diagnostic Procedure.
1. GO TO 3.
CHECK TARGET IDLE SPEED
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: Identifying Rev Engine (2, 000 To 3, 000 RPM)
  Courtesy of NISSAN MOTOR CO., U.S.A.
3. Read idle speed in "DATA MONITOR" mode with CONSULT-II.
  1. M/T: 650 +/- 50 RPM
  2. A/T: 800 +/- 50 RPM (in P or N position)
  Fig 5: CONSULT-II Display Data Monitor
  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 RMP) two or three times under no-load, then run engine at idle speed for about 1 minute.
3. Check idle speed.
  1. M/T: 650 +/- 50 RPM
  2. A/T: 800 +/- 50 RPM (in P or N position)
OK or NG
1. OK: GO TO 10.
2. NG: GO TO 4.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING .
  1. GO TO 5.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform THROTTLE VALVE CLOSED POSITION LEARNING .
1. GO TO 6.
PERFORM IDLE AIR VOLUME LEARNING
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.
CHECK TARGET IDLE SPEED AGAIN
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.
  1. M/T: 650 +/- RPM
  2. A/T: 800 +/- 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.
  1. M/T: 650 +/- 50 RPM
  2. A/T: 800 +/- 50 RPM (in P or N position)
OK or NG
1. OK: GO TO 10.
2. NG: GO TO 8.
DETECT MALFUNCTIONING PART
Check the following.
- Check camshaft position sensor (PHASE) and circuit. Refer to DTC P0340 CMP SENSOR (PHASE) .
- Check camshaft position sensor (POS) and circuit. Refer to DTC P0335 CKP SENSOR (POS) .
OK or NG
1. OK: GO TO 9.
2. NG:
  1. Repair or replace.
  2. GO TO 4.
CHECK ECM FUNCTION
Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is the rarely the case.)
1. GO TO 4.
CHECK IGNITION TIMING
1. Run engine at idle.
2. Check ignition timing with a timing light.
  1. M/T: 7 +/- 5° BTDC
  2. A/T: 18 +/- 5° BTDC (in P or N position)
OK or NG
1. OK: INSPECTION END
2. NG: GO TO 11.
Fig 6: Identifying Ignition Timing Marks
Courtesy of NISSAN MOTOR CO., U.S.A.
PERFORM ACCELERATOR PEDAL RELEASED POSITION LEARNING
1. Stop engine.
2. Perform ACCELERATOR PEDAL RELEASED POSITION LEARNING .
1. GO TO 12.
PERFORM THROTTLE VALVE CLOSED POSITION LEARNING
Perform THROTTLE VALVE CLOSED POSITION LEARNING .
1. GO TO 13.
PERFORM IDLE AIR VOLUME LEARNING
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.
CHECK TARGET IDLE SPEED AGAIN
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.
  1. M/T: 650 +/- 50 RPM
  2. A/T: 800 +/- 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.
  1. M/T: 650 +/- 50 RPM
  2. A/T: 800 +/- 50 RPM (in P or N position)
OK or NG
1. OK: GO TO 15.
2. NG: GO TO 17.
CHECK IGNITION TIMING AGAIN.
1. Run engine at idle.
2. Check ignition timing with a timing light.
  1. M/T: 7 +/- 5° BTDC
  2. A/T: 18 +/- 5° BTDC (in P or N position)
OK or NG
1. OK: INSPECTION END
2. NG: GO TO 16.
Fig 7: Identifying Ignition Timing Marks
Courtesy of NISSAN MOTOR CO., U.S.A.
CHECK TIMING CHAIN INSTALLATION
Check timing chain installation. Refer to INSTALLATION .

OK or NG
1. OK: GO TO 17.
2. NG:
  1. Repair the timing chain installation.
  2. GO TO 4.
DETECT MALFUNCTIONING PART
Check the following.
- Check camshaft position sensor (PHASE) and circuit. Refer to DTC P0340 CMP SENSOR (PHASE) .
- Check camshaft position sensor (POS) and circuit. Refer to DTC P0335 CKP SENSOR (POS) .
OK or NG
1. OK: GO TO 18.
2. NG:
  1. Repair or replace.
  2. GO TO 4.
CHECK ECM FUNCTION
Substitute another known-good ECM to check ECM function. (ECM may be the cause of an incident, but this is the rarely the case.)
1. GO TO 4.