TM Q-2320-387-24-1
FUEL SYSTEM
DIAGNOSTIC FLOWCHART
KNOWN INFO
T OPTIONS
LISTEN.
ENGINE WONT SHUT
OFF
DISCONNECT WIRE 54A FROM
FUEL SOLENOID.
DOES THE ENGINE SHUT OFF?
POSSIBLE
PROBLEMS
REASON FOR QUESTION
If the engine doesnr shut off, the
solenoid is mechanically
stuck
open.
FUEL SOLENOID
SOLENOID WIRING
ROTARY SWITCH
CONTROL BOX
KNOWN INFO
OPTIONS
1. STE/ICE-R TEST 69
(Page 2-506)
2. MULTIMETER
TURN ROTARY SWITCH TO
STOP. DISCONNECT BODY
CONNECTOR AT PROTECTIVE
CONTROL BOX.
IS VOLTAGE 0 AT WIRE 54A AT
FUEL SOLENOID?
FUEL SOLENOID OK
ENGINE WON’T SHUT
OFF
REASON FOR QUESTION
If voltage is 0. the problem is in
the wiring harness to the switch
or in the switch.
POSSIBLE
PROBLEMS
SOLENOID WIRING
ROTARY SWITCH
CONTROL BOX
iT OPTIONS
1. STE/fCE-R TEST 69
(Page 2-506)
2. MULTIMETER
RECONNECT BODY
CONNECTOR.
DISCONNECT WIRE 11A FROM
ROTARY SWITCH.
IS VOLTAGE 0 AT WIRE 54A AT
FUEL SOLENOID?
REASON FOR QUESTlON
This wire supplies power to the
rotary switch. There should be
no power to the solenoid with it
disconnected.
SOLENOID
WIRING
ROTARY SWITCH
SYSTEM TEST TO VERIFY THERE ARE NO
2-128
OTHER FAULTS.
