NVH troubleshooting Chart
If necessary, repair or replace these parts.
Location of noise | Type of noise | Operating condition of engine | Source of noise | Check item | |||||
Before warmup | After warmup | When starting | When idling | When racing | While driving | ||||
Top of engine rocker cover cylinder head | Ticking or clicking | C | A | A | B | Tappet noise | Valve clearance | ||
Rattle | C | A | A | B | C | Camshaft bearing noise | Camshaft journal oil clearance Camshaft runout | ||
Crankshaft pulley cylinder block (side of engine) oil pan | Slap or knock | A | B | B | Piston pin noise | Piston to piston pin oil clearance Connecting rod bushing oil clearance | |||
Slap or rap | A | B | B | A | Piston slap noise | Piston to cylinder bore clearance Piston ring side clearance Piston ring end gap Connecting rod bend and torsion | |||
Knock | A | B | C | B | B | B | Connecting rod bearing noise | Connecting rod bushing oil clearance Connecting rod bearing oil clearance | |
Knock | A | B | A | B | C | Main bearing noise | Main bearing oil clearance Crankshaft runout | ||
Front of engine front cover | Tapping or ticking | A | A | B | B | B | Timing chain and chain tensioner noise | Timing chain cracks and wear Timing chain tensioner operation | |
Front of engine | Squeaking or fizzing | A | B | B | C | Drive belt (Sticking or slipping) | Drive belt deflection | ||
Creaking | A | B | A | B | A | B | Drive belt (Slipping) | Idler pulley bearing operation | |
Squall Creak | A | B | B | A | B | Water pump noise | Water pump operation |
A: Closely related B: Related C: Sometimes related -: Not related
Inspection Warm up engine and then turn it off. Release fuel pressure. Remove ignition coil and spark plug from each cylinder. Connect engine tachometer (not required in use of CONSULT). ...
Exploded View 1. Generator 2. Water pump 3. Crankshaft pulley 4. A/C compressor (with A/C models) Idler pulley (without A/C models) 5. Idler pulley 6. Drive belt ...
Reporting safety defects
For USA
If you believe that your vehicle has a defect
which could cause a crash or could
cause injury or death, you should immediately
inform the National Highway Traffic
Safety Administration (NHTSA) in addition
to notifying NISSAN.
If NHTSA receives similar complaints, it
may open an inv ...
U0100 Lost communication (ECM A)
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
U0100
Lost Communication With
ECM/PCM "A"
When the ignition switch is ON,
TCM is unable to receive the
CAN communications signal
from ECM continuously for 2
...