Page 606 - Foton Workshop Manual - Tunland (AT)

04-460 DIAGNOSTICS - ENGINE CONTROL SYSTEM

TOO MUCH OIL SLUDGE IN THE CRANKCASE

Fault phenomenon Diagnosis logic Possible reasons
• Poor engine oil quality
• Engine oil
• Poor fuel quality
Too much oil sludge in the • Oil maintenance time
04 • Too long oil maintenance
crankcase • Fuel
time
• Cooling system
• Cooling system fault

Diagnosis Procedure

1 . Check the engine data
(a) Ignition switch: OFF.
(b) Connect the diagnosis tool with the fault diagnosis connector (16 pins) on the lower
left of the dashboard.
(c) Ignition switch: ON, and start the diagnostic tool.
(d) Read the motor data shown on the diagnostic tool.
Check whether the data flow is normal or not.

YES>To step 2.
No >Maintenance related faults.

2 . Cooling system fault

(a) Check the quality of engine oil is accord with standard.
Is the inspection result normal?

YES>To step 3.
NO>Replace engine oil.

3 . Check fuel

(a) Check the quality of fuel is accord with standard.
Is the inspection result normal?

YES>To step 4.
NO> Replace fuel.

4 . Check oil maintenance time
(a) Check that the oil maintenance period is too long.

Is the inspection result normal?

YES> Replace new oil.
NO >To step 5.

5 . Check cooling system
(a) Check whether coolant is normal or not.

Is the inspection result normal?
YES>To step 6.

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