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.
1991 Subaru XT AutomaticFACTORY OEM SERVICE PROCEDURE
LOYALE, XT & XT6 Ignition Control System Tests
NOTE:
Terminal references in the following test chart apply only to Loyale PFI, XT and XT6. When testing Loyale TBI, refer to TERMINAL CONVERSION table for correct terminal reference.
TERMINAL CONVERSION
| Terminal Indicated In Test Chart | TBI Terminal |
|---|---|
| No. 7 Red | No. 19 Green/Black |
| No. 8 Black or Green | No. 21 Black/White |
| No. 17 White | No. 20 Green/Yellow |
| No. 20 Brown/Red | No. 35 Black |
| No. 37/43 White/Yellow | No. 52 White/Yellow |
Factory Service Tools
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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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