DTC P0973: Short in Shift Solenoid Valve A Circuit
WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review the GENERAL TROUBLESHOOTING INFORMATION
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission.
- If DTC P0973 is stored in the PCM, the transmission does not shift to 2nd or 5th gear because of the fail-safe function.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Start the engine in P, and wait for at least 1 second.
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0973 indicated?
YES -Go to step 5.
NO -Intermittent failure, the system is OK at this time. Check for poor connections and loose terminals between shift solenoid valve A and the PCM.
- Turn the ignition switch to LOCK (0).
- Disconnect the shift solenoid valve A connector.
- Turn the ignition switch to ON (II).
- Clear the DTC with the HDS.
- Start the engine in P, and wait for at least 1 second.
- Check for Pending or Confirmed DTCs with the HDS.
Is DTC P0973 indicated?
YES -Go to step 11.
NO -Faulty shift solenoid valve A. Replace the secondary valve body (shift solenoid valve A) (see SECONDARY VALVE BODY REPLACEMENT ).
- Turn the ignition switch to LOCK (0).
- Jump the SCS line with the HDS.
- Disconnect PCM connector C (49P).
- Check for continuity between PCM connector terminal C20 and body ground.
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair a short to body ground in the wire between PCM connector terminal C20 and shift solenoid valve A connector terminal No. 2.
NO -Replace the PCM (see PCM REPLACEMENT ).