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.
1987 Ford Tempo LX, 4D Sedan, 2.3 X, AutomaticFACTORY OEM SERVICE PROCEDURE
Code/Test Menu (KOEO)
KEY ON/ENGINE OFF (KOEO) CIRCUIT TEST MENU
| Code No. | Go To: Circuit Test No. (Step No.) |
|---|---|
| 13 | AA (1) |
| 15 | PP (11) |
| 21 | G (1) |
| 22 | H (1) |
| 23 | AA (12) |
| 24 | E (1) |
| 31 | M (1) |
| 32 | M (13) |
| 34 | M (12) |
| 35 | M (5) |
| 51 | G (4) |
| 52 | R (1) |
| 53 | AA (15) |
| 54 | E (5) |
| 58 | AA (5) |
| 61 | G (6) |
| 63 | AA (18) |
| 64 | E (7) |
| 67 | O (1) |
| 68 | AA (9) |
| 73 | AA (22) |
| 84 | M (8) |
| 87 | Y (7) |
| 93 | AA (11) |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.
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