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Code 73, Pressure Control Solenoid: Notes

Pressure control solenoid is a PCM-controlled device used to regulate transmission line pressure. PCM compares TPS voltage, engine RPM and other inputs to determine proper line pressure for a given load. PCM regulates pressure by applying a varying amperage to pressure control solenoid. Amperage varies from 0.1 to 1.1 amps.

NOTE: Test numbers refer to numbers on diagnostic chart.
  1. Checks ability of the PCM to command pressure control solenoid.
  2. Checks for voltage at PCM.
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