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Home >> Mercury >> 2008 >> Sable Base, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Powertrain DTC Charts And Descriptions (Except Diesel & Hybrid) >> DTC Diagnosis >> P1780 - Transmission Control Switch (TCS) Out Of Self-Test Range
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P1780 - Transmission Control Switch (TCS) Out Of Self-Test Range

P1780 - TRANSMISSION CONTROL SWITCH (TCS) OUT OF SELF-TEST RANGE

Description:  During key on engine running (KOER) self-test the TCS must be cycled, or a DTC is set.
Possible Causes: 
  • TCS not cycled during the self-test.
  • TCS circuit short or open
  • Damaged TCS switch
Diagnostic Aids:  Verify the TCS switch cycles on/off.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
All   refer to PINPOINT TEST TB .
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