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 MANUALSFORD1990RANGER 4WD L4-140 2.3L SOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTTECHNICAL SERVICE BULLETINSALL TECHNICAL SERVICE BULLETINSDIS CONNECTOR PIN NUMBERS - MANUAL REVISION
1990 Ford Ranger 4WD L4-140 2.3L SOHC
DIS Connector Pin Numbers - Manual Revision
1990 Ford Ranger 4WD L4-140 2.3L SOHCSECTION DIS Connector Pin Numbers - Manual Revision
90ford34 ENGINE/EMISSIONS DIAGNOSIS SHOP MANUAL - 1990 - PAGE 17-364 - DIS CONNECTOR PIN NUMBERS REVISED
Article No. 90-18B-29
LIGHT TRUCK: 1990 RANGER
ISSUE: The DSI connector pins 7-12 indicated on page 17-364 of the Ignition/Erratic Diagnostic Monitor (IDM) Pinpoint Test N in the 1990 Engine/Emissions Diagnosis Shop Manual are incorrect. The correct pins are 1-6.
ACTION: Refer to the pages following this TSB article for the updated test procedures.
OTHER APPLICABLE ARTICLES: 89-5A-13
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 290000
Article No. 90-18B-29
LIGHT TRUCK: 1990 RANGER
ISSUE: The DSI connector pins 7-12 indicated on page 17-364 of the Ignition/Erratic Diagnostic Monitor (IDM) Pinpoint Test N in the 1990 Engine/Emissions Diagnosis Shop Manual are incorrect. The correct pins are 1-6.
ACTION: Refer to the pages following this TSB article for the updated test procedures.
OTHER APPLICABLE ARTICLES: 89-5A-13
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 290000
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.