Page 2613 - Foton Workshop Manual - Sauvana

DIAGNOSIS-ENGINE CONTROL SYSTEM 62-561

P0201，P0202，P0203，P0204，P0261，P0263，P0264，
P0266，P0267，P0269，P0270，P0272 - FUEL INJECTOR

CIRCUIT FAULT
P0201-Open circuit of cylinder 1 injector
P0202-Open circuit of cylinder 2 injector 62
P0203-Open circuit of cylinder 3 injector
P0204-Open circuit of cylinder 4 injector
P0261-Lower voltage of a cylinder fuel injector control circuit
P0263-Improper voltage of a cylinder fuel injector control circuit
P0264-Lower voltage of No.2 cylinder fuel injector control circuit
P0266-Improper voltage of No. 2 cylinder fuel injector control circuit
P0267-Lower voltage of No.3 cylinder fuel injector control circuit
P0269-Improper voltage of No. 3 cylinder fuel injector control circuit
P0270-Lower voltage of No. 4 cylinder fuel injector control circuit
P0272-Improper voltage of No. 4 cylinder fuel injector control circuit

General

1. The operating voltage of the fuel injector is supplied by the main relay controlled by
the engine electronic injection control unit, and mainrelay supplies the voltage of
battery to the fuel injector and the wiring harness connectors of all fuel injector.
2. The engine electronic injection control unit controls the ground wire through the
wiring harness connection. The engine electronic injection control unit is internally
grounded.
3. The engine electronic injection control unit monitors the state of each fuel injector
driving circuit, and if the engine electronic injection control unit detects that the
voltage correspondingto the instruction state of the fuel injector driving circuit is
incorrect, will set the fault diagnosis code of the cylinder fuel injector control circuit.

Page 2613