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".

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.
For inoperative Fuel Pump refer to FUEL PUMP CONTROL
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