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.
Continuity Test Procedure (1989)
Test procedure using a multimeter is carried out the same as for 1987-88 models, with addition of tests for purge control valve, air conditioning, heated front screen and condenser fan inputs. The use of a hand held vacuum pump, for example a "Mityvac", is required to carry out Tests 9 and 10. See Figure . Pin wire colors are identified in ENGINE CONTROL MODULE CONNECTOR TERMINAL IDENTIFICATION (1989) table.
| Pin Number | (1) Wire Color | ||
|---|---|---|---|
| 1 | Red/Green | ||
| 2 | Brown/Orange | ||
| 3 | Yellow | ||
| 4 | Black | ||
| 5 | Black/White | ||
| 6 | Yellow | ||
| 7 | Green/Blue | ||
| 8 | Purple/Yellow | ||
| 9 | White/Light Green | ||
| 10 | Black/Yellow | ||
| 11 | Yellow/White | ||
| 12 | Blue/Red | ||
| 13 | Yellow/Blue | ||
| 14 | Black | ||
| 15 | Brown | ||
| 16 | Blue/Purple | ||
| 17 | Gray/Yellow | ||
| 18 | White/Pink | ||
| 19 | White/Gray | ||
| 20 | Red | ||
| 21 | Yellow/Black | ||
| 22 | Blue/Red | ||
| 23 | Blue | ||
| 24 | Blue | ||
| 25 | Red/Black | ||
| 26 | Green/White | ||
| 27 | Black/Gray | ||
| 28 | Blue/Gray | ||
| 29 | Orange | ||
| 30 | Not Used | ||
| 31 | Not Used | ||
| 32 | Grey/White | ||
| 33 | Black/Gray | ||
| 34 | Black/Orange | ||
| 35 | Blue/Green | ||
| 36 | Black/Green | ||
| 37 | White/Yellow | ||
| 38 | Not Used | ||
| 39 | White/Black | ||
| 40 | Black | ||
|
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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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