⚠️ Digital/electronic cluster on higher trim levels only (turbo models, GT). Base models use analog cluster with no electronic module. No programming required; odometer stored mechanically or in non-volatile memory.
Electronic Control Unit (ECU)1.2 hr R&Rno coding
📍 Engine compartment, passenger side firewall or inner fender
⚠️ Mitsubishi-sourced ECU on fuel-injected models only (1.5L turbo, 1.6L EFI). Calibration stored in non-reprogrammable EPROM. Carbureted base models have no ECU. Uses Mitsubishi proprietary diagnostic connector, not Chrysler DRB-compatible. Plug-and-play replacement with correct part number.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1988 Plymouth Colt 1.6L I4 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.