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Home >> Kia >> 2020 >> Optima LX >> Repair and Diagnosis >> External Pages >> Different car >> Section 254 (Dual Clutch Transmission Diagnosis (2 Of 2) - 1.6L) >> DTC P0904-12: Select 1 Position Sensor Short To Battery >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
Item Normal Value Prerequisite Condition Probe (+) Probe (-)
Power circuit (Open/Short): Voltage Approx. 8.8V
  1. Select actuator connector: Disconnected
  2. Ignition: ON
Select solenoid 1 power terminal Chassis ground
Ground circuit (Open): Resistance Approx. below 1Ω
  1. Ignition: OFF
  2. Select actuator connector: Disconnected
Select solenoid 1 ground terminal Chassis ground
Signal circuit (Open): Resistance Approx. below 1Ω
  1. Ignition: OFF
  2. Select actuator, TCM connector: Disconnected
Select solenoid 1 signal terminal Select solenoid 1 signal terminal of TCM connector
  1. Is the result within specifications?

    YES 

    • This can be an intermittent fault caused by poor contact in the sensor's and/or control module's connector. Or, control module's memory was not cleared after repair. Thoroughly check connectors for looseness, poor connection, ending, corrosion, contamination, deterioration, or damage.
    • Replace the select actuator with an usable one and check for proper operation. If it works properly, put the component in place. Then, go to "VERIFICATION OF VEHICLE REPAIR ".

    NO