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1997 Legacy

  1. Disconnect TCM connector B56 and ECM B84 connector. Measure resistance between connector B56 terminal No. 16 and B84 connector terminal No. 36. Resistance should be 0-1 ohm. If resistance is okay, go to next step. If resistance is not within specification, repair open in harness between TCM and ECM.
  2. Measure resistance between TCM connector B56 and ground. Resistance between connector B56 terminal No. 16 and ground should be more than 100 k/ohms. If resistance is okay, go to next step. If resistance is not within specification, repair short to ground in harness between TCM and transmission connector.
  3. Measure resistance between TCM connector B56 and ground. Resistance between B56 terminal No. 1 and ground should be 0-1 ohm. If resistance is not within specification, go to next step. If resistance is okay, go to step  5.
  4. Disconnect transmission connector. Measure resistance between transmission connector receptacle and ground. Resistance between transmission connector receptacle terminal No. 8 and ground should be 0-1 ohm. If resistance is okay, repair open in harness between TCM and transmission. If resistance is not within specification, repair open in internal transmission harness between receptacle and solenoid ground.
  5. Connect connectors to ECM, TCM and transmission. With KOEO, backprobe and measure voltage between TCM connector B56 terminal No. 16 and ground. Voltage should be 6-9 volts. If voltage is okay, replace TCM and retest. If voltage is not within specifications, replace ECM and retest.
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