| Pin # |
Wire Color |
Connections for a 1985-89 2.3L Turbo |
Value at Idle |
| 01 |
YEL |
+12 Battery Voltage |
12-14 volts |
| 04 |
DG/Y |
IDM / Ignition Diagnostic Monitor (TFI) |
20-31hz |
| 07 |
LGRN/RED |
ECT / Engine Coolant Temp Sensor |
3 volts = 70*F |
| 10 |
BLK/YEL |
A/C ON input |
A/C ON = 12 volts |
| 16 |
BLK/ORG |
Ignition Ground (TFI) |
< 0.1volts (open to ground) |
| 17 |
YEL/BLK |
MIL / Engine Light & STO / Self-Test Output |
ON = GND / OFF = open |
| 20 |
BLK |
Ground |
< 0.1volts (open to ground) |
| 21 |
GRY/WHT |
IAB / Idle Air Bypass |
3.0 – 12.0 volts |
| 22 |
TAN/LGRN |
FPR / Fuel Pump Relay |
ON = GND / OFF = open |
| 23 |
YEL/RED |
KS / Knock Sensor |
2.5 volts = knock present |
| 25 |
LGRN/PNK |
VAT / Vain Air Temp |
3 volts = 70*F |
| 26 |
ORG/WHT |
Voltage Reference |
4.9-5.1 volts |
| 29 |
DK GRN |
HEGO |
0.0-1.0 volts |
| 30 |
YEL/RED |
Transmission Neutral Interface |
0.0 volts in neutral |
| 34 |
BLU/PUR |
DOL / Data-Output Link |
5 volts |
| 35 |
YEL |
EGR Solenoid |
ON = GND / OFF = open |
| 36 |
YEL/LGRN |
SPOUT / Spark Output Signal (TFI) |
6.93 volts |
| 37 |
RED |
EEC Relay +12 volts |
12-14 volts |
| 40 |
BLK |
Ground |
< 0.1volts (open to ground) |
| 43 |
WHT/BLK |
VAF / Vain Air Flow |
0.8 volts |
| 45 |
GRN/BLK |
BP / Barometric Pressure Sensor |
159hz = sea level |
| 46 |
GRY/RED |
Signal Return |
0.1 volts |
| 47 |
DK GRN |
TPS / Throttle Position Sensor |
0.9 volts |
| 48 |
BLK/WHT |
STI / Self-Test Input |
GND = Self-Test |
| 49 |
ORG |
Ground |
< 0.1volts (open to ground) |
| 54 |
ORG/BLU |
A/C WOT Relay |
OFF = GND / ON = open |
| 56 |
BLK |
PIP / Profile Ignition Pickup (TFI) |
6.93 volts |
| 57 |
RED |
EEC Relay +12 volts |
12-14 volts |
| 58 |
TAN/RED |
Injectors 3 & 4 |
4.9-5.2ms duty cycle |
| 59 |
TAN/ORG |
Injectors 1 & 2 |
4.9-5.2ms duty cycle |
| 60 |
BLK |
Ground |
< 0.1volts (open to ground) |
