SPN 7753 Starter Motor Input Signal
Circuit Description
The ECM monitors the starter input command signal from the
key switch to the ECM. When the key switch is in the START
position, start voltage is sent from the key switch to the ECM.
This triggers the ECM to command the starter motor solenoid
to engage through the control circuit.
If the ECM receives a start signal request from the key switch
for an excessive amount of time, SPN 7753 will be triggered,
indicating an issue with the start signal request shorted
high (FMI 3). The ECM then disables the output voltage
commanded to the starter motor solenoid.
Possible FMIs - SPN 7753
The possible FMIs for SPN 7753 are as follows:
FMI
Description
3 Input signal shorted high
58
Not for
Reproduction
Summary of Contents for 25E300
Page 1: ...Vanguard EFI Diagnostics and Repair 25E300 REPAIR MANUAL N o t f o r R e p r o d u c t i o n...
Page 18: ...Model 25E300 EFI Component Locations 19 N o t f o r R e p r o d u c t i o n...
Page 26: ...Speed vs Voltage Table 8 27 N o t f o r R e p r o d u c t i o n...
Page 61: ...25E300 Wiring Harness Diagram 62 vanguardpower com N o t f o r R e p r o d u c t i o n...
Page 62: ...63 N o t f o r R e p r o d u c t i o n...
Page 88: ...Model 25E300 Fuel Hose Location and Routing Tankless 89 N o t f o r R e p r o d u c t i o n...
