1986 Toyota Pickup Base, 22-RTE, R151FFACTORY OEM SERVICE PROCEDURE

Diagnostic System

The ECU of the TCCS is equipped with a self-diagnostic system which detects system failures or abnormalities. When a malfunction occurs, the ECU lights the "CHECK ENGINE" lamp located on instrument panel.

By analyzing various signals, the ECU detects system malfunctions which are related to various operating parameter sensors. The ECU stores failure codes associated with the detected failure until the diagnosis system is cleared. Clear the diagnosis system by removing the "STOP" fuse with ignition switch in "OFF" position.

A "CHECK ENGINE" warning light on instrument panel informs driver that a malfunction has been detected. The light goes out automatically when malfunction has been cleared.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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