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FUEL SYSTEM
30
indication comes ON or no
change over happens
Loose CNG Relays
connection
Rectify
CNG fuse blown off.
Check & rectify / replace
No supply to CNG ECU
Rectify
No supply to switch
Rectify
Faulty switch
Check & rectify / replace
Faulty cluster
Check & rectify / replace
Fuel Mode Indication ( FMI)
blinking very fast
Error code/fault in CNG
System
Rectify errors and Clear fault codes /
through diagnostic tool
Fuel Mode Indication ( FMI)
blinks very slow /
continuously
No CNG in tank. Tank is
empty
Fill the tank
No CNG supply to engine
Rectify
CNG level indication is not
working
Faulty cluster
Check & rectify / replace
Faulty high pressure sensor
Check & rectify / replace
Faulty wiring
Check wiring harness
Faulty ECU
Check & rectify / replace