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HOMESERVICE MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 21 (CRUISE CONTROL SYSTEM)SELF-DIAGNOSTICSDIAGNOSTIC PROCEDURE
1984 Plymouth Horizon Base, 1.6 A

Diagnostic Procedure

1984 Plymouth Horizon Base, 1.6 ASECTION Diagnostic 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.
NOTE: When using self-diagnostic tests for diagnosis, DO NOT  skip any steps or incorrect diagnosis may result. Always start with TEST TC-1A  under SELF-DIAGNOSTIC TESTS.

Perform a visual inspection before attempting to diagnose engine control system problems. See VISUAL INSPECTION  . Enter on-board diagnostics and retrieve trouble codes. See ENTERING ON-BOARD DIAGNOSTICS  . If trouble codes are not present and/or Chrysler Collision Detection (CCD) Diagnostic Readout Box (DRB) is used, proceed to TEST TC-1A  under SELF-DIAGNOSTIC TESTS.

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.