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Home >> Lexus >> 1995 >> SC 300 Standard >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Diagnosis - A-340 (W/O OBD-II)) >> Diagnostic Tests >> DTC 67: Od Direct Clutch Speed Sensor (GS300, SC400 & Supra Turbo)

DTC 67: Od Direct Clutch Speed Sensor (GS300, SC400 & Supra Turbo)

WARNING: This page is about a different variant/trim than selected.
  1. Ensure ignition is off. Access ECT ECU. See Figure, Figure and Figure . Disconnect ECT ECU harness connector and install check harness between ECT ECU and harness connector. Using ohmmeter, measure resistance between check harness terminals NCO+ and NCO-. See Figure. Resistance should be 560-680 ohms. If resistance is 560-680 ohms, replace ECT ECU and retest.
  2. If resistance is not 560-680 ohms, remove OD direct clutch speed sensor from transmission. See Figure, Figure and Figure . Measure resistance between speed sensor terminals. Resistance should be 560-680 ohms. If resistance is not 560-860 ohms, replace sensor and retest.
  3. If resistance is 560-680 ohms, inspect both circuits between ECT ECU and OD direct clutch speed sensor. See appropriate wiring diagram in WIRING DIAGRAMS . Repair as necessary. If continuity exists in both circuits, check performance of OD direct clutch speed sensor. See OD DIRECT CLUTCH SPEED SENSOR under COMPONENT TESTS .
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