Specifications

Operation Section
-118-
Table 2. Diagnostic Fault Codes (Flash Codes) cont’d.
DFC PROBABLE FAULT FAULT ACTION * CORRECTIVE ACTION FIRST CHECK
711
(71)
LSDFault_Dither1
Dither Valve 1 Fault, signal
has opened or shorted to
ground or power or defective
dither 1 valve
(1) TurnOnMil
(2) Disable
GasO2 Ctrl
(3) Disable
GasPost O2Ctrl
(Certified Units
Only)
Check FTV1 for an open wire or FTV connector
being disconnected
FTV1 Pin 1 (signal) to SECM Pin A1
FTV1 Pin 2 (power) to SECM (DRVP) Pin A23
Check FTV1 for an open coil by disconnecting
the FTV connector and measuring the
resistance (~26Ω ± 2Ω )
712
LSDFault_Dither2
Dither Valve 2 Fault, signal
has opened or shorted to
ground or power or defective
dither 2 valve
(1) TurnOnMil
(2) Disable
GasO2 Ctrl
(3) Disable
GasPost O2Ctrl
(Certified Units
Only)
Check FTV1 for an open wire or FTV connector
being disconnected or signal shorted to GND
FTV2 Pin 1 (signal) to SECM Pin A2
FTV2 Pin 2 (power) to SECM (DRVP) Pin A23
Check FTV1 for an open coil by disconnecting
the FTV connector and measuring the
resistance (~26Ω ± 2Ω )
713 LSDFault_CSValve None N/A
714
LSDFault_CheckEngine
Check Engine Lamp Fault,
signal has opened or shorted
to ground or power or
defective check en
g
ine lam
p
None
Check ‘Check Engine Lamp’ for an open wire or
shorted to GND
715
LSDFault_CrankDisable
Crank Disable Fault, signal
has opened or shorted to
ground or power or defective
crank disable rela
y
None N/A
716
LSDFault_FuelPump
Fuel pump fault, signal has
opened, shorted to ground or
power, or defective fuel
pump
TurnOnMil
Check fuel pump for an open wire or connector
being disconnected or signal shorted to GND
Fuel Pump Pin B (signal) from SECM Pin A13
Fuel Pump Pin A (power) from main relay 1 Pin
A23
Check Fuel Pump for an open coil by
disconnecting the Fuel Pump connector and
measuring the resistance
(~26Ω ± 3Ω)
Check for 12V to fuel pump
717
LSDFault_LockOff
Fuel lock off Valve Fault,
signal has opened or shorted
to ground or power or
defective Fuel lock off valve
TurnOnMil
Check fuel lock off valve for an open wire or
connector being disconnected or signal shorted
to GND
Lock off Pin B (signal) from SECM Pin A11
Lock off Pin A (power) from main relay 1 Pin
A23
Check lock off valve for an open coil by
disconnecting the lock off valve connector and
measuring the resistance (~26Ω ± 3Ω)
Check for 12V to lock off valve