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 MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 21 (CRUISE CONTROL SYSTEM)SELF-DIAGNOSTICSTEST SC-VER - VERIFICATION PROCEDURE
1984 Plymouth Horizon Base, 1.6 A
Test SC-VER - Verification Procedure
1984 Plymouth Horizon Base, 1.6 ASECTION Test SC-VER - Verification Procedure
WARNING: This page is about a different car, the 1994 Eagle Vision, 1994 Dodge Intrepid, 1994 Chrysler New Yorker, 1994 Chrysler LHS, and 1994 Chrysler Concorde. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect and ensure that all engine components are connected. If other trouble code(s) was previously present and has not yet been corrected, go to TEST TC-1A . If Powertrain Control Module (PCM) has been changed and vehicle is equipped with Vehicle Theft Security System (VTSS), turn ignition on then off at least 20 times to activate VTSS. If PCM has not been changed, using DRB, erase trouble codes. Using DRB, reset all values in adaptive memory and disconnect DRB.
- Ensure no other charging system problems remain by doing the following:
- Turn on A/C and blower motor (if equipped with A/C).
- Drive vehicle for no less than 5 minutes and attain a speed of 40 MPH.
- Ensure transmission shifts through all gears.
- After completion of road test, turn engine off.
- Start engine and idle for no less than 2 minutes.
- Turn engine off.
- Connect DRB to data link connector and read trouble codes.
- If previously repaired trouble code has reset, repair is incomplete. Check all related TECHNICAL SERVICE BULLETINS and return to TEST TC-1A if necessary. If other faults are present, proceed to TEST TC-1A . If there are no other faults, repair is complete.
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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.