LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 1995 >> SC 400 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - A-340 (W/O OBD-II) >> Diagnostic Tests >> DTC 65: No. 4 Solenoid Circuit (Pickup & 4RUNNER With A-340H)

DTC 65: No. 4 Solenoid Circuit (Pickup & 4RUNNER With A-340H)

NOTE: A stuck solenoid will not set a trouble code. Trouble codes are only set for circuit malfunctions, not mechanical failures.
  1. Access ECT ECU. See Figure. Using ohmmeter, backprobe ECT ECU harness connector. Check resistance between terminal S4 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, disconnect electrical connector at No. 4 solenoid, located on transmission valve body. See Figure.
  3. Check resistance between electrical terminal on No. 4 solenoid and body ground. Replace solenoid if resistance is not 11-15 ohms. If resistance is 11-15 ohms, check wiring between No. 4 solenoid and ECT ECU. See appropriate wiring diagram in WIRING DIAGRAMS .
  4. If wiring is okay, check performance of solenoid. See SOLENOIDS under COMPONENT TESTS . Replace as needed. If solenoid is functioning okay, replace ECT ECU and retest.
scientia non olet · About LEMON Manuals