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Driver Thermistor Out Of Range High

When Monitored: With the ignition on, during the heated seat operation.

Set Condition: This condition is immediately set when the Heated Seat Module senses a greater value than the value stored in EEPROM.

Possible Causes are:

NOTE: Raise the seat to the highest position to gain access to the connectors. The HSM is located at the front of the seat and the Seat Heater connectors are at the rear of the seat.
  1. Turn ignition off. Disconnect the Driver Heated Seat Cushion 4-way connector. Measure the resistance between the seat sensor 5-volt supply circuit and the driver seat temperature sensor input circuit at the driver heated seat cushion (cushion side) connector. Is the resistance less than 800 ohms at room temperature? If yes, replace the Driver Heated Seat Cushion Cover (sensor shorted). Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  2. Turn ignition off. Disconnect the Heated Seat Module C1 harness connector. Disconnect the Driver Heated Seat Cushion 4-way connector. Turn ignition on. Measure the voltage between the driver seat temperature sensor input circuit and ground. Is the voltage more than 5.5 volts? If yes, repair the driver seat temperature sensor input circuit for a short to battery. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  3. Turn ignition off. Disconnect the Heated Seat Module C1 harness connector. Disconnect the Driver Heated Seat Cushion 4-way connector. Turn ignition on. Measure the voltage between the driver seat temperature sensor input circuit and ground. Is there any voltage on the driver seat temperature sensor input circuit? If yes, repair the driver seat temperature sensor input circuit for a short to 5-volt supply. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If no, go to next step.
  4. Turn ignition off. Disconnect the Heated Seat Module C1 harness connector. Disconnect the Driver Heated Seat Cushion 4-way connector,. Turn ignition on. Measure the resistance of the seat sensor 5-volt supply circuit to ground. Is the resistance less than 1000 ohms? If yes, repair the seat sensor 5-volt supply circuit for a short to ground. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS. If no, replace the Heated Seat Module. Perform MEMORY SYSTEM VERIFICATION TEST  under VERIFICATION TESTS.
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