Troubleshooting Procedure - Derbi Rambla 250 Manual

Injection
The adjustable parameters screen page is used:
• to align the throttle position sensor.
Throttle position sensor alignment
Align the throttle position sensor if the throttle body
and/or the control unit should be replaced.
• Select the function: "throttle position self-learn-
ing".
• Make sure the left throttle is fully in.
• Press the "ENTER" key.
• Turn the key to "OFF" and leave it for at least 30
seconds.

Troubleshooting procedure

Engine does not start
Possible Cause
Faults detected by self-diagnosis
Fuel supply
Power to the spark plug
Parameter reliability
Starting difficulties
Possible Cause
Faults detected by self-diagnosis
Start-up speed
Power to the spark plug
Fuel supply
ENGINE DOES NOT START EVEN IF PULLED
ENGINE START-UP PROBLEMS
Operation
Pump relay
HV coil
Injector
Revolution timing sensor
Fuel present in the tank
Fuel pump activation
Fuel pressure (low)
Injector flow (low)
Spark plug Shielded cap HV Coil (secondary insulation)
Coolant temperature
Distribution timing - injection start
Intake air temperature
Operation
Pump relay
HV coil
Injector
Revolution timing sensor
Air temperature
Coolant temperature
Starter motor and remote control
Battery
Earth connections
Spark plug
Shielded cap
HV coil
Revolution timing sensor
Ignition advance
Fuel pressure (low)
Injector flow (low)
Injector seal (poor)
INJEC - 153