PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 516 / 892

KEY:
1 . Ignition switch
2 . 60A fuse F/L
3 . Battery
4 . Starter motor
5 . EFI ECU control unit
6 . Ignition switch wire on the cable harness side
Circuit description
When the engine is started with the starter motor, the intake air flow is slow, that is why there is a lean
combustion vaporisation. A rich mixture is therefore necessary in order to obtain a proper start-up. When
the engine is started with the starter motor, the battery positive voltage is applied to the terminal STA
of the Engine Electronic Control Unit. The start-up signal is used mainly to increase the fuel injection
volume for the start-up injection and post-start-up injection check.
Failure code Diagnostic failure code detection
Conditions
Affected area
P1510 Interrupted or short-circuited wire in the start-
up signal circuit.
(detection logic with 2 interventions)
- Interrupted or short-circuited wire in the start-
up signal circuit.
- Engine Electronic Control unit
THE CODE P1510 CAN BE DETECTED AFTER START-UPS WITHOUT USING THE STARTER
MOTOR.
Iniection System
PORTER 1.3 16V
IS - 516