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DTC C1762: Left Rear Position Sensor (Out-Of-Range)

  1. Perform RTD diagnostic system check. See RTD DIAGNOSTIC SYSTEM CHECK . After performing RTD diagnostic system check, go to next step.
  2. Using scan tool, retrieve DTCs. If DTC C1768 is stored, go to appropriate DTC for diagnosis. See DIAGNOSTIC TROUBLE CODE (DTC) IDENTIFICATION  table under SELF-DIAGNOSTICS. If DTC C1768 is not stored, go to next step.
  3. Turn ignition on. Using scan tool, monitor left rear position sensor voltage. If voltage is 0.35-4.75 volts, go to step 7). If voltage is not 0.35-4.75 volts, go to next step.
  4. Visually inspect left rear position sensor for bent arm or bracket, disconnect sensor link or other signs of damage. Repair or replace as necessary. After repairs, go to step 13). If no damage is found, go to next step.
  5. Turn ignition off. Disconnect position sensor 3-pin connector. Turn ignition on. Measure voltage between position sensor harness connector Red/Black and Light Green/Black wires. If voltage is 7.0-8.5 volts, leave connector disconnected and go to next step. If voltage is not 7.0-8.5 volts, go to step 10).
  6. Using scan tool, monitor left rear position sensor voltage. Connect fused jumper wire between position sensor harness connector Red/Black and Light Green/White wires. Note voltage with jumper wire connected. Disconnect jumper wire. If voltage is 4.0-5.5 volts with jumper wire connected, go to step 11). If voltage is not 4.0-5.5 volts with jumper wire connected, go to step 9).
  7. Check position sensor for intermittent malfunction. See NOTES ON INTERMITTENTS  under SELF-DIAGNOSTICS. After repairs, go to step 13). If no problem was found, go to step 12).
  8. Check for short to ground, an open or short to voltage in Light Green/Black wire between position sensor and RTD control module and repair as necessary. See WIRING DIAGRAM . After repairs, go to step 13). If Light Green/Black wire is okay, go to step 12).
  9. Check for short to ground, an open or short to voltage in Light Green/White wire between position sensor and RTD control module and repair as necessary. See WIRING DIAGRAM . After repairs, go to step 13). If Light Green/White wire is okay, go to step 12).
  10. Check for an open in Red/Black wire between position sensor and RTD control module and repair as necessary. See WIRING DIAGRAM . After repairs, go to step 13). If Red/Black wire is okay, go to step 8).
  11. Replace left rear position sensor. See RTD POSITION SENSOR  under REMOVAL & INSTALLATION. After repairs, go to step 13).
  12. Replace RTD control module. See RTD CONTROL MODULE  under REMOVAL & INSTALLATION. After repairs, go to next step.
  13. Turn ignition off. Reinstall/reconnect all components/connectors. Using scan tool, clear all DTCs and perform RTD DIAGNOSTIC SYSTEM CHECK .
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