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Home >> Isuzu >> 1999 >> Trooper Automatic >> Repair and Diagnosis >> Transmission >> Transfer Case >> Diagnosis - Torque On-Demand >> Diagnostic Trouble Code Tests >> DTC 14: Front Speed Sensor Open Or Shorted

DTC 14: Front Speed Sensor Open Or Shorted

  1. Start engine. Select TOD 4H mode. If DTC 14 is not present, go to step  3 . If DTC 14 is present, go to next step.
  2. Turn ignition off. Disconnect ECU connector. Using ohmmeter, check for continuity between ground and terminal No. 24 (Green/White wire) of ECU connector. If continuity is present, replace front speed sensor. Go to step  6 . If continuity is not present, repair Green/White wire. Go to step  6 .
  3. If DTC 24 is present, go to next step. If DTC 24 is not present, go to step  2 .
  4. Turn ignition off. Disconnect ECU connector. Using ohmmeter, check for continuity between ground and terminal No. 24 (Green/White wire) of ECU connector. Check for continuity between ground and terminal No. 23 (Green/Yellow wire) of ECU connector. If continuity is present, go to next step. If continuity is not present, repair Green/White and/or Green/Yellow wire. Go to step  6 .
  5. Check for continuity between ground and terminal No. 15 (Green wire) of ECU connector. Check for continuity between ground and terminal No. 18 (Green/Red wire) of ECU connector. If continuity is present, replace front and rear speed sensor. Go to step  6 . If continuity is not present, repair Green and/or Green/Red wire. Go to step  6 .
  6. Ensure all mechanical and electrical components are mounted correctly. Clear DTC. If all components are mounted correctly, test is complete. Recheck system operation. If any components are not mounted correctly, repair or replace as needed. Repeat drive test and see if symptom is repeated. Also see INTERMITTENTS  .
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