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3SFE/3SGE/3SGTE Check Engine Codes

Discussion in 'Technical' started by 1fstgts, Feb 27, 2007.

  1. 1fstgts

    1fstgts Well-Known Member Staff Member Administrator Moderator Donated!

    Heres a list of check engine codes for our engines. Not as neat as I would have liked, but better than nothing.
    CKT= associated circuitry

    3SFE
    Code:
    -[System]-------------[Diagnosis]--------------------------------------------------------------------------[Trouble Area]
    [11]----[ECU(+B)]------------[Momentary interuption in power supply to ECU]----------------------[IGN sw or CKT Main Relay, Main Relay CKT, ECU
    [12]----[RPM Sig]------------[No NE or G signal to ECU in 2 Sec after crnking]--------------------[Dist or CKT, starter signal ckt, ECU
    [13]----[RPM Sig]------------[No NE signal to ECU when rpm is above 1,000]----------------------[Dist or CKT, ECU
    [14]----[Ign Sig]---------------[No IGF sig to ECU 4-5 in succession]	------------------------------[Igniter and ign coil or CKT,ECU
    [21]----[Oxy Sensor]--------[Open circuit in ox sensor(only lean indication)]------------------------[Oxy sensor or CKT, ECU
    [22]----[Water Temp Sen][Open or short circuit in Water tmp sen sig(TWH)]--------------------[Water Temp sensor or CKT, ECU
    [24]----[Intake Air Temp]--[Open or short circuit in intak air tmp (THA)]----------------------------[Intake air temp sensor or CKT, ECU
    [25]----[AF Lean Malf.]----[When Air Fule Ratio feedback compensation valve]------------------[Injectors or CKT, Oxy sens or CKT, ECU, 
    ------------------------------------[or aditive control value continues at the lean or rich limit]---------------[AFM, Air Intake sys,IGN Sys,Fuel Line Pressure
    -------------------------------------[for a renewed for a period of time.]
    [26]----[AF Rich Malf.]------[Same as 25]---------------------------------------
    [27]----[Sub Oxy sen]------[Opern or short in sub oxy sens OX2]---------------------------------------[Sub oxy sensor or CKT, ECU
    [31]----[AFM Signal]--------[Open/short circuit in VC sig from VS and E2]---------------------------[AFM or CKT, ECU
    [32]----[AFM signal]--------[OPen circuit in E2 or short from VC to VS]-------------------------------[AFM or CKT, ECU
    [41]----[TPS]------------------[IDL and PSW being output together]-----------------------------------------[TPS or CKT, ECU
    [42]----[Veh Spd sen]-----[No SPD sig for 8 sec between 2500-5500rpm]---------------------------[Veh spd sensor or CKT, ECU
    [43]----[Starter Sig]--------[No STA sig to ECU until engine reaches 800rpm]----------------------[Ign switch or CKT, ECU
    [71]----[EGR Malf]---------[EGR gas temp below set level]-------------------------------------------------[EGR Sys, EGR Temp sens or CKT,VSV for EGR or CKT, ECU
    [51]----[Swich Sig]--------[No IDL or NSW sig or A/C sig to ECU]--------------------------------------[A/C amp or CKT, TPS or CKT, Neu.Strt or CKT, ECU
    
    
    
    3SGE and 3SGTE
    [11]----[ECU(+B)]------------[Momentary interuption in power supply to ECU]----------------------[IGN sw or CKT Main Relay, Main Relay CKT, ECU
    [12]----[RPM Sig]------------[No NE or G signal to ECU in 2 Sec after crnking]--------------------[Dist or CKT, starter signal ckt, ECU
    [13]----[RPM Sig]------------[No NE signal to ECU when rpm is above 1,000]----------------------[Dist or CKT, ECU
    [14]----[Ign Sig]---------------[No IGF sig to ECU 8-11 times in sucession]---------------------------[Igniter and ign coil or CKT,ECU
    [21]----[Oxy Sensor]--------[Detection of oxy sens deterioration]--------------------------------------[Oxy sensor or CKT, ECU
    [21]----[Oxy Sensor]-------[Open or short circuit in oxy sens heater]--------------------------------[same as above
    [25]----[AF Lean Malf.]----[When Air Fule Ratio feedback compensation valveor adaptive]-[Injectors or CKT, Oxy sens or CKT, ECU, 
    ------------------------------------[ control value continues at the lean or rich limit renewed]--------[AFM, Air Intake sys,IGN Sys,Fuel Line Pressure
    ------------------------------------[ for a period of time or oxy sen is rich or lean for a period]-----------------------------------------------------------
    [26]----[AF Rich Malf.]-----[or when the AF ratio feedbck or acv freq is abnormally high]---[same as above and Cold start injector
    [31]----[AFM Signal]--------[Open/short circuit in VC sig from VS and E2]---------------------------[AFM or CKT, ECU
    [32]----[AFM signal]--------[OPen circuit in E2 or short from VC to VS]-------------------------------[AFM or CKT, ECU
    [34]----[Turbo Pres sig]---[When the fuel is cut due high turbo pressure]-------------------------[Turbo, turbo pres sensor or CKT, ECU
    [35]----[Turbo Pres Sen]-[Open or Short circuit in Turbo press sens sig. PIM }----------------[Turbo, turbo pres sensor or CKT, ECU
    [41]----{TPS]-----------------[OPen or short circuit in throttle pos sens  (VTA)]---------------------[TPS or CKT ECU
    [42]----[Veh Spd sen]-----[No SPD sig for 8 sec between 2500-5500rpm]---------------------------[Veh spd sensor or CKT, ECU
    [43]----[Starter Sig]--------[No STA sig to ECU until engine reaches 800rpm]----------------------[Ign switch or CKT, ECU
    [52]----[Knock sens]------[Open or short cicuit in konock sens sig(KNK)]--------------------------[Knock sens or CKT, ECU
    [53]----[Knock cntrl sig]-[Knock control in ECU faulty]----------------------------------------------------[ECU
    [54]----[Intercooler sig]--[low coolant in intercooler or water pump motor is open or locked][Intercooler coolant, coolant level sensor or CKT, intercooler pump or CKT, ECU
    [71]----[EGR Malf]---------[EGR gas temp below set level]-------------------------------------------------[EGR Sys, EGR Temp sens or CKT,VSV for EGR or CKT, ECU
    [51]----[Swich Sig]--------[No IDL or NSW sig or A/C sig to ECU]--------------------------------------[A/C amp or CKT, TPS or CKT, Neu.Strt or CKT, ECU
     

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