Page 616 - Foton Workshop Manual - Tunland (AT)

04-470 DIAGNOSTICS - ENGINE CONTROL SYSTEM

ENGINE OIL POLLUTION

Fault phenomenon Diagnosis logic Possible reasons
• Cooling system • Cooling system fault
Engine oil pollution • Lubrication system • Lubrication system fault
• Engine oil • Poor engine oil quality
04

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 . Check cooling system
(a) Check whether the cooling system can work properly.

Is the inspection result normal?
YES>To step 3.
No >Maintenance related faults.

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

YES>To step 4.
NO> Replace new oil.

4 . Check lubrication system
(a) Check whether the lubrication system can work properly.
Is the inspection result normal?

YES>Complete the diagnosis and the system is confirmed to be normal.
No >Maintenance related faults.

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