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 ...
P2857 Clutch A pressure
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P2857
Clutch A pressure engagement
performance
The auxiliary gearbox gear ratio is 2.232 or
more for the auxiliary gearbox 1GR ratio continuously
for 5 seconds o ...
P2859 Clutch A pressure
DTC Logic
DTC DETECTION LOGIC
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P2859
Clutch A pressuren disengagement
performance
The detection conditions continuously for 200
msec or more under the following diagnosis
conditions:- Diagnosi ...