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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSFORD1988BRONCO 4.9 Y, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMEEC-IV CEC SYSTEMQUICK TESTTEST D22 - INTEGRAL RELAY CONTROL MODULE (IRCM)
1988 Ford Bronco 4.9 Y, Automatic
Test D22 - Integral Relay Control Module (IRCM)
1988 Ford Bronco 4.9 Y, AutomaticSECTION Test D22 - Integral Relay Control Module (IRCM)
NOTE:
Perform this test only when KOEO SELF-TEST Codes 72, 78, 82, 83, 87, 88, 95 or 96 are displayed, or when you are directed here by CIRCUIT TEST A1, CIRCUIT TEST A3, or by DIAGNOSIS BY SYMPTOM TEST.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.