WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

CHECK ENGINE START
Turn ignition switch OFF, and restart engine.

Is engine running?

Yes or No

Yes (With CONSULT-II): GO TO 2.

Yes (Without CONSULT-II): GO TO 3.

No: GO TO 4.
CHECK OVERALL FUNCTION
With CONSULT-II
1. Perform "POWER BALANCE" in "ACTIVE TEST" mode with CONSULT-II.
  
  Fig 1: Identifying CONSULT-II Display - ACTIVE TEST
  Courtesy of NISSAN NORTH AMERICA, INC.
2. Make sure that each circuit produces a momentary engine speed drop.
OK or NG

OK: INSPECTION END

NG: GO TO 10.
CHECK OVERALL FUNCTION
Without CONSULT-II
1. Let engine idle.
2. Read the voltage signal between ECM terminals 60, 61, 62, 79, 80, 81 and ground with an oscilloscope.
  
  Fig 2: Checking Voltage Signal Between ECM Terminals 60, 61, 62, 79, 80, 81 And Ground
  Courtesy of NISSAN NORTH AMERICA, INC.
3. Verify that the oscilloscope screen shows the signal wave as shown below.
  NOTE: The pulse cycle changes depending on rpm at idle.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Diagnostic Procedure

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?