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Pinpoint Test H: Transmission Control Module Signal

NOTE: The transmission control module (TCM) is integrated into the mechatronic assembly. If installing a new transaxle or a mechatronic assembly, the TCM will need to be checked and recalibrated (reflashed) to the latest level calibration available.
  1. H1 TRANSMISSION CONTROL MODULE SIGNAL OUT OF RANGE 
    • Check to make sure the transaxle harness connector is fully seated, pins are fully engaged in connector and in good condition before proceeding.
    • Connect the diagnostic tool.
    • Key in ON position.
    • Monitor PID: Ignition
    • Is the ignition voltage between 11 and 15 volts. 
    1. YES  : Go to  H2.
    2. NO  : REPAIR the open or short circuit harness side.
  2. H2 TRANSMISSION CONTROL MODULE SIGNAL OUT OF RANGE 
    • Key in ON position.
    • PID: VPWRTCM
    • Is the operating voltage between 11 and 15 volts. 
    1. YES  : System operating correctly.
    2. NO  : FIX other DTCs first. CHARGE the vehicle battery.
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