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Horizontal Sensor Out Of Range High

When Monitored: Ignition on.

Set Condition: This condition is immediately set when the seat motor potentiometer feeds a value higher than the Memory Heated Seat/Mirror Module has stored in EEPROM.

Possible Causes are:

  1. Turn ignition off. Disconnect the Driver Power Seat Horizontal Position Sensor connector. Measure the resistance of the Seat Position Sensor Ground circuit to body ground. Is the resistance less than 5 ohms? If yes, go to next step. If no, go to step  7 .
  2. Ensure all seat and sensor connectors are connected and front Horizontal motor is operational. Using the DRBIII(R), select: Body, Memory Seat, and Sensors. Monitor the Horizontal Position sensor while operating the seat horizontally to both limits. Was the voltage ever more than 7 volts ONLY when the motor was in operation? If yes, replace the Seat Track Assembly. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  3. Disconnect the Driver Power Seat Horizontal Position Sensor connector Turn ignition on. Measure the voltage between the Seat Sensor 5-volt supply circuit and ground. Is the voltage more than 5.5 volts? If yes, repair the seat sensor 5-volt supply circuit for a short to battery. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  4. Disconnect the Seat Module C1 connector. Disconnect the Driver Power Seat Horizontal Position Sensor connector. Turn ignition on. Measure the voltage between Seat Horizontal Position Signal circuit and ground. Is there any voltage on the Seat Horizontal Position Signal circuit? If no, go to next step. If yes, repair the Horizontal Position Signal circuit for a short to voltage. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  5. Turn ignition off. Disconnect the Driver Power Seat Horizontal Position Sensor connector. Ensure the Memory Seat Module is fully connected before proceeding. Turn ignition on. Using the DRBIII(R), select: Body, Memory Seat and Sensors. Read the Horizontal Position Sensor voltage. Is the voltage more than 0.2 volts? If yes, go to next step. If no, replace the seat track assembly. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  6. If there are no possible causes remaining, replace the Memory Seat Module. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  7. Turn ignition off. Disconnect the Driver Power Seat Horizontal Position Sensor connector. Disconnect the Seat Module C1 connector. Measure the resistance of the Seat Position Sensor Ground wire between the Seat Module connector and the sensor connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Seat Sensor Ground Wire. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
  8. If there are no possible causes remaining, replace the Memory Seat Module. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
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