DTC Troubleshooting: P0971 (29)
  1. Check for continuity between A/T clutch pressure control solenoid valve C connector terminal No. 2 and body ground.
Is there continuity?
YES -
Go to Step 18 .
NO -
Repair open in the wire between A/T clutch pressure control solenoid valve C and body ground (G101); R20A3 engine model, K24Z3 engine model, or repair poor ground (G101), then go to Step 12 .
  1. Reconnect all connectors.
  1. Turn the ignition switch to ON (II).
  1. Clear the DTC with the HDS.
  1. Start the engine, and wait for at least 1 second.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0971 indicated?
YES -
Check for poor connections or loose terminals between A/T clutch pressure control solenoid valve C and the PCM, then go to Step 1 .
NO -
Go to Step 17 .
  1. Monitor the OBD STATUS for P0971 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES -
Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in Step 16 , go to the indicated DTC's troubleshooting.■
NO -
If the HDS indicates FAILED, check for poor connections or loose terminals between A/T clutch pressure control solenoid valve C and the PCM, then go to Step 1 . If the HDS indicates NOT COMPLETED, go to Step 15 .
  1. Reconnect all connectors.
  1. Update the PCM if it does not have the latest software; R20A3 engine model, K24Z3 engine model, or substitute a known-good PCM.
  1. Start the engine, and wait for at least 1 second.
  1. Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0971 indicated?
YES -
Check for poor connections or loose terminals between A/T clutch pressure control solenoid valve C and the PCM. If the PCM was updated, substitute a known-good PCM, then go to Step 20 . If the PCM was substituted, go to Step 1 .
NO -
Go to Step 22 .
  1. Monitor the OBD STATUS for P0971 in the DTCs MENU with the HDS.
Does the HDS indicate PASSED?
YES -
If the PCM was updated, troubleshooting is complete. If the PCM was substituted, replace the original PCM; R20A3 engine model, K24Z3 engine model. If any other Temporary DTCs or DTCs were indicated in Step 21 , go to the indicated DTC's troubleshooting.■
NO -
If the HDS indicates FAILED, check for poor connections or loose terminals between A/T clutch pressure control solenoid valve C and the PCM. If the PCM was updated, substitute a known-good PCM, then go to Step 20 . If the PCM was substituted, go to Step 1 . If the HDS indicates NOT COMPLETED, go to Step 20 .