Page 1019 - Workshop Manual - Tunland (2017)

DIAGNOSTICS - ENGINE CONTROL SYSTEM 04-333

COOLANT LOSS - INTERNAL 04

Fault phenomenon Diagnosis logic Possible reasons
• Water pump • Water pump fault
• Cooling system • Cooling system fault
• Oil condenser • Oil condenser fault
Coolant loss - Internal
• Cylinder cover • Cylinder cover fault
• Cylinder gasket • Cylinder gasket fault
• Cylinder block • Cylinder gasket 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 . Check cooling system

(a) Check whether coolant is normal or not.
(b) Check whether cooling system leaks or not.
Is the inspection result normal?

YES>To step 3.
No >Maintenance related faults.

3 . Check water pump

(a) Check whether water pump is damaged or not.
Is the inspection result normal?

YES>To step 4.
NO >Replace water pump.

4 . Check oil condenser
(a) Check whether oil condenser is damaged or not.

Is the inspection result normal?

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

5 . Check the motor machinery
(a) Check whether cylinder cover, cylinder gasket and cylinder block are damaged or not.