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Home >> Chevrolet >> 2012 >> Corvette Base, 2D Convertible, Automatic Trans >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat System >> Diagnostic Information and Procedures >> DTC B1336 >> Circuit/System Testing

Circuit/System Testing

  1. Ignition ON, with a scan tool clear the current and history DTC.
  2. Determine which motor set the DTC by operating the seat motors listed below one at a time in both directions. Check for the DTC to set between each motor test.
    • Driver seat front vertical motor
    • Driver seat rear vertical motor
    • Driver seat horizontal motor
  3. Ignition OFF, disconnect the X3 harness connector at the MSM.
  4. Test for infinite resistance between the appropriate control circuit terminals listed below and ground:
    • Seat horizontal motor forward terminal N
    • Seat horizontal motor rearward terminal S
    • Seat front vertical motor upward terminal A
    • Seat front vertical motor downward terminal M
    • Seat rear vertical motor upward terminal R
    • Seat rear vertical motor downward terminal P
    • If not the specified value, test the control circuit for a short to ground. If the circuit tests normal, test or replace the appropriate seat motor.
  5. Connect the X3 harness connector at the MSM and disconnect the X1 harness connector at the seat adjuster motor assembly.
  6. Connect a test lamp between the appropriate control circuit terminals listed below:
    • Seat horizontal motor terminal A and terminal B
    • Seat front vertical motor terminal C and terminal D
    • Seat rear vertical motor terminal E and terminal F
  7. Ignition ON, command the appropriate seat motor in the Forward and Rearward or Up and Down directions with a scan tool. The test lamp should turn ON when commanding the motor in the forward and rearward or up and down states.
    • If the test lamp remains OFF during either of the commands, test the control circuits for a short to ground or an open/high resistance. If the circuits test normal, replace the MSM.
  8. If all circuits test normal, test or replace the seat adjuster motor assembly.
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