Sym ATTILA RS-21 EFi 150 Service Manual page 71

4. FUEL INJECTION SYSTEM
When selecting the "1. retrieving DTC code" (LCD background changed into black), and press
"ENTER", then there have 3 sub-functions can be selected.
With the ▲▼ cursor to select "1. active DTC codes" (LCD background changed into black), press
"ENTER" , and then enter into problem searching menu & verify if problem occurred right now.
The menu will show problem symptom when problem have been detected. Then, conduct
repairing procedure for the problem. However, if there is no DTC codes been shown on the
menu , it means the EFI system is in normal. Press "EXIT" key to back to the main menu.
With the ▲▼ cursor to select "2. occurred DTC codes" (LCD background changed into black),
press "ENTER" , and then enter into problem record menu. (as fig 9)
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Fig 7
Fig 6
Fig 9
Fig 8