AA - Hard/No Start/Restart

Description
This describes the operations necessary to diagnose a Hard/No Start/Restart symptom. This will involve checking the Fuel, Air, Ignition, ECM, Power circuit, Ground circuit, Starting circuit, and other systems. Refer to "Symptom Matrix Chart", for details.

NOTE: NATS (Nissan Anti-Theft System) can cause a no/hard start incident. If the security indicator lamp is illuminated when the ignition switch is in the ON position, a NATS malfunction is indicated.

Diagnostic Repair Procedure
Check the following:
1. Battery, Starter and Alternator
2. Main power supply and ground circuits
3. Fuel quality
4. Fuel Pump and Fuel Pressure Regulator operation: Gauge should read 34 psi at idle and 43 psi when fuel pressure regulator vacuum hose is disconnected and plugged.
5. Engine compression: Spec = 142 - 185 psi at 300 rpm
6. Fuel Injections: INJECTOR NON-DETECTABLE
7. Ignition signal: P1320 - IGNITION SIGNAL
8. Base Idle speed, ignition timing and throttle position sensor adjustment: BASIC INSPECTION AND ADJUSTMENT
9. IACV-AAC Valve operation: Use CONSULT-II, ENGINE -ACTIVE TEST - IACV-AAC/V OPENING
10. EGR: Confirm it is not stuck or sticking open

Use CONSULT-II to check the operation of the following items:
11. START SIGNAL input to the ECM
12. P0100 - MASS AIR FLOW SENSOR
13. P0125 - ENGINE COOLANT TEMPERATURE SENSOR
14. P0335 - CRANKSHAFT POSITION SENSOR (POS)
15. P1335 - CRANKSHAFT POSITION SENSOR (REF)
16. P0340 - CAMSHAFT POSITION SENSOR

Other items to be checked as possible malfunction cause
17. PCV system
18. EVAP system
19. IACV-FICD
20. A/C circuit
21. Oil level and condition
22. Intake air leaks
23. Air Filter
24. Engine mechanical components
25. ABS/TCS Control Unit
26. ECM