1993 Subaru Justy BaseFACTORY OEM SERVICE PROCEDURE

Code 62: Electric Load Signal

NOTE: Refer to illustration for ECU connector and terminal identification. See Figure .
  1. Disconnect ECU connectors. Turn ignition on. Measure voltage between ground and ECU connector. Refer to the ELECTRIC LOAD SIGNAL VOLTAGE SPECIFICATIONS  table. If voltage is as specified, go to next step. If voltage is not as specified, repair faulty electric load signal circuit, harness connector and/or switches.
    ELECTRIC LOAD SIGNAL VOLTAGE SPECIFICATIONS

    Measure Between Terminals Volts
    No. 18 (1) & Ground (2) Less Than 2
    No. 18 (1) & Ground (3) More Than 8
    No. 20 (1) & Ground (4) More Than 8
    No. 21 (1) & Ground (5) More Than 8
    (1) Measure at ECU connector F120.
    (2) With rear defogger off.
    (3) With rear defogger on.
    (4) With headlights off or on high beam.
    (5) With headlights off or on low beam.
  2. Turn ignition off. Measure resistance between ground and ECU connector F119, terminal No. 1 (Brown wire). Measure resistance between ground and ECU connector F120, terminal No. 10 (Brown wire). If both resistances are less than 10 ohms, check for poor ECU connector contact. Repair connector and/or wiring harness as necessary. If connector and wiring harness are okay, replace ECU. If either resistance is more than 10 ohms, repair connector and/or wiring harness as necessary.
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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.