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Home >> Geo >> 1993 >> Prizm Base, Automatic >> Repair and Diagnosis (Single Page) >> Transmission >> Automatic Trans >> Diagnosis - A-240 "E" Series >> Diagnostic Testing >> Code No. 63 (No. 2 Solenoid)

Code No. 63 (No. 2 Solenoid)

  1. Access ECT ECU. See Figure-Figure . Using ohmmeter, check resistance between terminal S2 and body ground with connector removed from ECT ECU. See Figure.
  2. Resistance should be 11-15 ohms. If resistance is okay, replace ECT ECU. If resistance is not within specification, remove oil pan. Disconnect electrical connector (Pink/Green wire on Paseo, Black wire on all others) at No. 2 solenoid.
  3. Check resistance between electrical terminal on No. 2 solenoid and body ground. Replace No. 2 solenoid if resistance is not 11-15 ohms. If resistance is 11-15 ohms, inspect and repair wiring between No. 2 solenoid and ECT ECU.