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6-3-48 ENGINE GENERAL INFORMATION AND DIAGNOSIS (Z13DT ENGINE)
B-21, Fuel System
Test
Work Order Description
T01
Check: Fuel Pipes and Fuel Filter
CAUTION:
The fuel system is very sensitive. Work should be done with
high cleanliness and care. Air in the fuel system can cause dam-
age to the high-pressure fuel pump. That's why the vehicle must
never be driven till the fuel tank is empty.
• Check fuel tank for correct fuel sort content
• The fuel reserve must be greater than 5 L
• Check connected hoses and tubes for kinks, damage etc.
• Check the correct fitting of the connections and sealing.
(use only sealing, that is approved by the vehicle manufacturer)
• Check fuel filter
• Check for pressure decrease in the fuel supply section.
(leakage, blockage)
• Check for pressure decrease in the high pressure section.
(leakage, blockage)
Yes: T02
T02
Check: Fault Location
• Perform quick check actuator test:
Refer to Table B-04 Actuator Test "T01" Fuel Pump Relay Test
• After successful test/fault repair proceed to the next test step
Yes: –
Nominal Value
System okay?
No: C-42
No: –
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