Page 295 - CTS - Mechanic Diesel - TP

MECHANIC DIESEL - CITS

Step 3: Visual Inspection
Check visually the following components and systems if any fault noticed , repair and replace the parts and go to
the final confirmation test otherwise go to the next step

1 Engine oil level and any oil leakage
2 Engine coolant level and any leakage of coolant
3 Air filter for dirt or clogged
4 Battery electrolyte level and corrosion of battery terminals
5 Water pump belt tension and its wear
6 Vacuum leakage of air intake system,
7 Blown Fuses, Tightness of wiring connectors and any other parts deformation
8 Check MIL lamp, SVS Light, Charging Indicator light, oil pressure light, Engine temperature high warning light
and fuel level meter operation after engine starting
9 Check exhaust leakage after engine start
Step 4: Trouble symptom confirmation
Confirm the DTC by start the engine and warm up upto normal operating temperature stop the engine and check
DTC
Or
Confirm the DTC by drive the vehicle at 60 kmph for 5 minutes and then 100 kmph for 5 minutes, stop the vehicle
and read DTC. Identify the trouble symptom if any during this test go to the next step.
Step 5: Rechecking and Record of DTC
Recheck whether the same DTC appears again as shown in the step 2 then go to the Troubleshooting for DTC
step or no DTC record it and go to the next step of engine basic inspection engine symptom diagnosis.
Step 6: Engine basic inspection and engine symptom diagnosis
Perform basic engine inspection and engine symptom diagnosis as listed below and go to the step of final
confirmaton.
1 Check Engine and emission control
2 Check Battery voltage
3 Check engine start condition
4 Check Immobilizer system
5 Check Low fuel pressure circuit and High fuel pressure circuit

6 Check Engine hard starting
7 Check engine smooth running
8 Check engine performance and engine hesitation while accelerator depressed
9 Check engine Idling, Knocking, excessive smoke,excessive oil and Fuel consumption.
Step 7 : Troubleshooting for DTC
Check and repair according to the DTC shown.
Step 8: Intermittent problem check
Check the parts where the intermittent problem may occur easily like wiring hareness, connectors etc,,. and
related circuits of DTC.
Step 9: Final confirmation Test
Confirm that the problem symptoms are removed and engine is free from the trouble. Clear the DTC and freeze
frame data.
Perform the DTC confirmation as per step4 and ensure that no DTC is shown.

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CITS : Automotive - Mechanic Diesel - Exercise 16.1