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Home >> Cadillac >> 2012 >> Escalade EXT >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Diagnostic Information and Procedures >> DTC B1395 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition OFF, disconnect the harness connector for all position sensors connected to the 5 V reference circuit.
  2. Ignition ON, observe all scan tool Driver Position Module sensor parameters in the Data Display screens listed below: The readings should be 0.0 V.
    • Seat 1
    • Adj. Pedals Info
    • Column Info
    • If greater than the specified value, test the appropriate signal circuit listed below for a short to voltage. If the circuit tests normal, replace the MSM.
    • Horizontal position sensor terminal 3 X2
    • Front vertical position sensor terminal 1 X2
    • Rear vertical position sensor terminal 5 X2
    • Recline position sensor terminal 2
    • Lumbar horizontal position sensor terminal D X2
    • Lumbar vertical position sensor terminal B X2
    • Adjustable pedal position sensor terminal 1
    • Steering wheel tilt actuator/position sensor terminal C
  3. Ignition ON, test for 4.8 - 5.2 V between the 5 V reference circuit at any one of the position sensors and ground.
    • If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the MSM.
    • If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the MSM.
  4. Connect each position sensor one at a time and verify that the DTC does not set as current.
    • If the DTC sets as current, replace the appropriate position sensor.
  5. If all circuits test normal, replace the MSM.
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