1985 Toyota MR2FACTORY OEM SERVICE PROCEDURE

Measure Resistance Of Start Injector Time Switch

Disconnect the connector. Using an ohmmeter, measure the resistance between each terminal.

START INJECTOR TIME SWITCH RESISTANCE SPECIFICATIONS

Between Terminals Resistance (Ohms) Coolant Temperature
STA-STJ 24-40 Below 30Β°C (86Β°F)
" 40-60 Above 40Β°C (104Β°F)
STA-Ground 20-80 N/A
Factory Service Tools

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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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