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Home >> Ford >> 1991 >> Thunderbird Base, 3.8 4 >> Repair and Diagnosis (Single Page) >> Engine Performance >> System >> Engine Controls - Tests W/Codes - 3.8L >> Test QB - Code 15, 511 Or 512 KOEO Or Continuous Memory Code >> Test Pin Identification
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Test Pin Identification

3.8L SPFI-MA (FWD AXODE) TEST PIN WIRE COLOR I.D.

Application Wire Color
Pin 1 (KAPWR) Yellow
Pin 17 (STO/MIL)
Continental Pink/Light Green
Sable & Taurus Tan/Red
Pin 20 (CASE GND) Black
Pin 26 (VREF) Brown/White
Pin 37 (VPWR) Red
Pin 40 (PWR GND) Black/Light Green
Pin 43 (HEGO-F) Red/Black
Pin 44 (HEGO-R)
Continental Gray/Light Blue
Sable & Taurus Dark Blue/Light Green
Pin 46 (SIG RTN) Gray/Red
Pin 48 (STI)
Continental White/Pink
Sable & Taurus Brown
Pin 57 (VPWR) Red
Pin 60 (PWR GND) Black/Light Green
3.8L SPFI-MA (RWD) TEST PIN WIRE COLOR IDENTIFICATION

Application Wire Color
Pin 1 (KAPWR) Yellow
Pin 17 (STO/MIL) Yellow/Black
Pin 20 (CASE GND) Black
Pin 26 (VREF) Orange/White
Pin 37 (VPWR) Red
Pin 40 (PWR GND) Black/Light Green
Pin 43 (HEGO-L) Tan/Red
Pin 44 (HEGO-R) Tan/Orange
Pin 46 (SIG RTN) Black/White
Pin 48 (STI) White/Red
Pin 57 (VPWR) Red
Pin 60 (PWR GND) Black/Light Green
3.8L SPFI-MA SC TEST PIN WIRE COLOR IDENTIFICATION

Application Wire Color
Pin 1 (KAPWR) Yellow
Pin 17 (STO/MIL) Yellow/Black
Pin 20 (CASE GND) Black
Pin 26 (VREF) Orange/White
Pin 37 (VPWR) Red
Pin 40 (PWR GND) Black/Light Green
Pin 43 (HEGO-L) Tan/Red
Pin 44 (HEGO-R) Tan/Orange
Pin 46 (SIG RTN) Black/White
Pin 48 (STI) White/Red
Pin 57 (VPWR) Red
Pin 60 (PWR GND) Black/Light Green

1) Continuous Memory Code 15/512 Displayed  Code 15/512 indicates ECA is experiencing power interruption in its Keep-Alive Memory (KAM) circuit. Clear Continuous Memory Codes. See CLEARING CODES under SELF-DIAGNOSTIC SYSTEM near the beginning of this article. Wait 5 minutes to allow code to reset. Repeat KOEO SELF-TEST for Continuous Memory Code output. If Continuous Memory Code 15/512 is not displayed, Continuous Memory Code 15/512 testing is complete. Service other codes as necessary. If Continuous Memory Code 15/512 is displayed during retest, go to next step.