Page 477 - Foton Workshop Manual - Auman EST-M

Diagnosis - Mechanical fault diagnosis DI - 423

Failure phenomenon Possible reason Failure elimination IN

Check the battery or the power circuit of
Battery voltage low DI
switch-free battery

Check the battery cable and connection. Clean or
Battery cable loose, broken or corroded EG
eeplace the cable if necessary

Check the battery. Repair or replace it if
Battery capacity lower than specification TR
necessary

Battery cable diameter or length not Use a piece of cable with a larger diameter or
AX
correct shorter length to replace the battery cable

Engine oil pressure switch, pressure gauge Check if the engine oil pressure switch, pressure
FR
or sensor failed or installation position not gauge, pressure sensor work well and the

correct positions are correct
ST
Engine drive device meshed Disengage the engne driving device

The engine fails to drag or
Starter circuit part failed Check the starter circuit parts BR
drag slowly
Starter motor pinion or gear ring broken Dismount the starter motor and check the gear
BW
Check the engine oil level and verify if the

Engine oil level higher than specification engine oil scale caliberation and oil sump
capacity are correct EL

Engine oil not meeting the specification
Replace the engine oil or filter
of working condition

Check if the crankshaft rotates flexibly. If
Crankshaft rotation not smooth
necessary, repair or replace relevant parts

Dismount the injector and rotate the crankshaft
Cylinder hydraulic block
Check the source of liquid in the cylinder

Separate the engine oil and check the filter to
Engine broken internally
determine the possible broken part

Key switch circuit failure Check the key switch circuit
Do not stop the engine
Electric control module (ECM) fails Replace ECM

Key switch at off (open) Turn the key switch to ON

Check if the warning indicator has voltage If
Error code warning indicator burnt
Error code warning indicator
necessary, replace the bulb
not on
Error code warning indicator circuit failure Check the error code warning indicator circuit

Key switch circuit failure Check the key switch circuit

DI-423