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Home >> Suzuki >> 1996 >> Sidekick JS, 2D Utility, Standard >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Diagnosis - Aw03-72LE (With OBD-II) >> Diagnostic Tests >> DTC P0720: Vehicle Speed Sensor (VSS) Circuit Fault >> Notes
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DTC P0720: Vehicle Speed Sensor (VSS) Circuit Fault: Notes

NOTE: DTC P0720 will set when 4WD "LO" switch is open, and no VSS (transmission) signal is received while 2000 VSS (speedometer) signal pulses are received during 2 driving cycles.
  1. Turn ignition switch to LOCK position. Disconnect TCM harness connector. Using a DVOM, measure resistance between TCM harness connector terminal No. 2 (White wire) and terminal No. 3 (Orange wire). If resistance is 387-473 ohms, go to step 6). If resistance is not as specified, go to next step.
  2. Disconnect VSS (transmission). Using a DVOM, measure resistance between VSS terminals (sensor side). If resistance is 387-473 ohms, go to next step. If resistance is not as specified, replace VSS.
  3. Using a DVOM, measure resistance between TCM harness connector terminal No. 3 (Orange wire) and VSS harness connector terminal No. 1 (Orange wire). If resistance is less than 2 ohms, go to next step. If resistance is not as specified, repair open in Orange wire between VSS and TCM.
  4. Using a DVOM, measure resistance between TCM harness connector terminal No. 2 (White wire) and VSS harness connector terminal No. 2 (White wire). If resistance is less than 2 ohms, go to next step. If resistance is not as specified, repair open in White wire between VSS and TCM.
  5. Reconnect all harness connectors. Clear DTCs. See CLEARING TROUBLE CODES  under SELF-DIAGNOSTIC SYSTEM. Road test vehicle and recheck for DTCs. If DTC P0720 resets, replace TCM. If DTC P0720 does not reset, fault is not present at this time. Check for an intermittent problem. See DIAGNOSTIC AIDS.
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