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Home >> Eagle >> 1997 >> Talon Base, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Tests W/Codes - Non-Turbo >> Trouble Code Tests >> Test TC-15A - Speed Control Power Relay & Solenoid Circuits
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Test TC-15A - Speed Control Power Relay & Solenoid Circuits

NOTE: For connector terminal ID, see CONNECTOR IDENTIFICATION  Directory. For wiring diagram, see appropriate WIRING DIAGRAMS - NON-TURBO article.
  1. Using scan tool, actuate Speed Control (SC) vent solenoid. If SC servo clicks, go to next step. If SC servo does not click, go to step 8).
  2. Wiggle wiring harness between SC servo and Powertrain Control Module (PCM). If wiggling did not cause an interruption of SC servo actuation, go to next step. If wiggling caused an interruption of SC servo actuation, repair wiring harness as necessary where wiggling caused problem to appear. Perform TEST VER-4A.
  3. Using scan tool, actuate SC vacuum solenoid. If SC servo clicks, go to next step. If SC vacuum solenoid does not click, go to step 8).
  4. Wiggle wiring harness between SC servo and brake switch to PCM while scan tool is still actuating SC vacuum solenoid. If wiggling did not cause an interruption of SC servo actuation, go to next step. If wiggling caused an interruption of SC servo actuation, repair wiring harness as necessary where wiggling caused problem to appear. Perform TEST VER-4A.
  5. Condition to set trouble code is not present at this time. If SPEED CONTROL SOLENOID CIRCUITS DTC is being diagnosed, go to next step. SPEED CONTROL POWER RELAY CIRCUIT DTC sets when PCM actuates vacuum and vent solenoids, but solenoids do not respond. Possible causes are: solenoid control circuit open or shorted, vacuum or vent solenoid shorted or open, open or shorted speed control power supply circuit or PCM failure. Go to step 7).
  6. SPEED CONTROL SOLENOID CIRCUITS DTC sets when speed control power supply circuit is either open or shorted to ground. Possible causes are: open or shorted power supply circuit or failed SC vent solenoid. Go to next step.
  7. Inspect all related wiring and connectors and repair as necessary. If related wiring and connectors were repaired, perform TEST VER-4A. If no problems were found with wiring and connectors, test is complete. Perform TEST VER-4A.
  8. Perform TEST TC-15C.
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