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Test TC-12A: Torque Converter Clutch Solenoid/Trans Relay CKTS (Neon)

NOTE: For connector terminal identification, see CONNECTOR IDENTIFICATION . For wiring diagram, see WIRING DIAGRAMS article.
  1. If vehicle is not equipped with a manual transaxle, go to next step. If vehicle is equipped with a manual transaxle, this DTC does not apply. Perform TEST VER-2A .
  2. Using scan tool, erase trouble codes. Turn ignition off for 10 seconds. Turn ignition on. Using scan tool, actuate Torque Converter Clutch (TCC) solenoid. Using scan tool, read Diagnostic Trouble Codes (DTCs). If scan tool displays TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CKTS, go to step 7)  . If scan tool does not display TORQUE CONVERTER CLUTCH SOLENOID/TRANS CKTS, go to next step.
  3. Condition to set trouble code is not present at this time. TORQUE CONVERTER CLUTCH SOLENOID/TRANS RELAY CKTS DTC sets when an open or shorted condition is detected in TCC solenoid control circuit. Go to next step.
  4. Possible causes are: TCC solenoid coil open or shorted, fused ignition switch output circuit open or solenoid control circuit open or shorted to ground. Go to next step.
  5. Inspect all related wiring and connectors and repair as necessary. If no problems were found with wiring and connectors, go to next step. If related wiring and connectors were repaired, perform TEST VER-2A .
  6. Using scan tool, read DTCs with actuator test still running. Wiggle wiring harness from TCC solenoid to PCM. If TCC solenoid control circuit DTC returned, repair wiring harness as necessary where wiggling caused problem to appear. Perform TEST VER-2A . If TCC solenoid control circuit DTC did not return, see INACTIVE TROUBLE CODE CONDITION . Test is complete. Perform TEST VER-2A .
  7. Turn ignition off. Disconnect TCC solenoid connector. See Fig 1. Turn ignition on. Using a voltmeter, check voltage of TCC solenoid connector Light Green/Black wire. If voltage is more than 10 volts, go to next step. If voltage is 10 volts or less, repair open Light Green/Black wire. Perform TEST VER-2A .
    Fig 1: TC-12A-1 Locating Torque Converter Clutch (TCC) Solenoid Connector (Neon)
    G96D01529
  8. Turn ignition off. Disconnect Powertrain Control Module (PCM) connector. Using an ohmmeter, check resistance of Orange/Black wire between TCC solenoid connector and PCM connector terminal No. 79. If resistance is less than 5 ohms, go to next step. If resistance is 5 ohms or more, repair open Orange/Black wire. Perform TEST VER-2A .
  9. Using an ohmmeter, check resistance of PCM connector terminal No. 79 (Orange/Black wire). If resistance is 5 ohms or more, go to next step. If resistance is less than 5 ohms, repair short to ground in Orange/Black wire. Perform TEST VER-2A .
  10. Reconnect TCC solenoid connector. Turn ignition on. Using a voltmeter, check voltage of PCM connector terminal No. 79 (Orange/Black wire). If voltage is more than 10 volts, replace PCM. Perform TEST VER-2A . If voltage is 10 volts or less, replace TCC solenoid. Perform TEST VER-2A .
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