Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET1987SPECTRUM-IMPORT L4-91.5 1509CC 1.5L VIN 7 2-BBLREPAIR AND DIAGNOSISDIAGRAMSCONNECTOR VIEWSENGINE CONTROL MODULECONNECTOR DESCRIPTION
1987 Chevrolet Spectrum-Import L4-91.5 1509cc 1.5L VIN 7 2-bbl
Connector Description
1987 Chevrolet Spectrum-Import L4-91.5 1509cc 1.5L VIN 7 2-bblSECTION Connector Description
Refer to Fig. 4 for the following pin numbers and corresponding functions:
1. Pin No. 1, ground.
2. Pin No. 2, ground.
3. Pin No. 3, oxygen sensor input.
4. Pin No. 4, system malfunction lamp driver.
5. Pin No. 5, throttle position sensor input.
6. Pin No. 6, battery (memory back-up).
7. Pin No. 7, throttle position reference voltage.
8. Pin No. 8, idle switch input.
9. Pin No. 9, inlet air temperature switch.
10. Pin No. 10, EFE heater relay.
11. Pin No. 11, 12 volts to ignition.
12. Pin No. 12, 12 volts to ignition.
13. Pin No. 13, not used.
14. Pin No. 14, fuel cut-off relay.
15. Pin No. 15, shift indicator lamp driver.
16. Pin No. 16, diagnosis decode.
17. Pin No. 17, coolant temperature sensor input.
18. Pin No. 18, barometric pressure switch.
19. Pin No. 19, ignition coil tachometer input.
20. Pin No. 20, oxygen sensor ground.
21. Pin No. 21, carburetor mixture control solenoid.
22. Pin No. 22, analog ground.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.