DTC P0712: Short in ATF Temperature Sensor Circuit
- Before you troubleshoot, record all freeze data and any on-board snapshot with the HDS, and review General Troubleshooting Information (see GENERAL TROUBLESHOOTING INFORMATION )
- This code is caused by an electrical circuit problem and cannot be caused by a mechanical problem in the transmission
- Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
- Check the ATF temperature sensor voltage with the HDS in the A/T Data List
Is the ATF Temp Sensor (V) 0 07 V or less?
YES -Go to step 3
NO -Intermittent failure, the system is OK at this time Check for an intermittent short to body ground in the wire between the ATF temperature sensor and the PCM
- Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
- Disconnect the ATF temperature sensor connector at the transmission end cover
- Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
- Check the ATF temperature sensor voltage with the HDS
Is the ATF Temp Sensor (V) 0 07 V or less?
YES -Go to step 7
NO -Replace ATF temperature sensor (see ATF TEMPERATURE SENSOR REPLACEMENT ), then go to step 11
- Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode
- Jump the SCS line with the HDS
- Disconnect PCM connector C (49P)
- Check for continuity between ATF temperature sensor connector terminal No 2 and body ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair short to body ground in the wire between PCM connector terminal C33 and ATF temperature sensor connector terminal No 2, then go to step 11
NO -Go to step 17
- Reconnect all connectors
- Turn the ignition switch to ON (II), or press the engine start/stop button to select the ON mode
- Clear the DTC with the HDS
- Start the engine in P, and wait for at least 10 seconds
- Check for Pending or Confirmed DTCs with the HDS
Is DTC P0712 indicated?
YES -Check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1
NO -Go to step 16
- Monitor the OBD status for P0712 in the DTCs MENU with the HDS
Does the HDS indicate PASSED?
YES -Troubleshooting is complete If any other Pending or Confirmed DTCs were indicated in step 15, go to the indicated DTC's troubleshooting
NO -If the HDS indicates FAILED, check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM, then go to step 1 If the HDS indicates NOT COMPLETED, go to step 14
- Reconnect all connectors
- Update the PCM if it does not have the latest software (see ECM/PCM UPDATE ), or substitute a known-good PCM (see SUBSTITUTING THE ECM/PCM )
- With the shift lever in P, turn the ignition switch to ON (II) or press the engine start/stop button to select the ON mode, and wait at least 20 seconds Then start the engine, and wait for at least 10 seconds
- Check for Pending or Confirmed DTCs with the HDS
Is DTC P0712 indicated?
YES -Check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 19 If the PCM was substituted, go to step 1
NO -Go to step 21
- Monitor the OBD status for P0712 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 (see ECM/PCM REPLACEMENT ) If any other Pending or Confirmed DTCs were indicated in step 20, go to the indicated DTC's troubleshooting
NO -If the HDS indicates FAILED, check for intermittent short to body ground in the wire between the ATF temperature sensor and the PCM If the PCM was updated, substitute a known-good PCM (see SUBSTITUTING THE ECM/PCM ), then go to step 19 If the PCM was substituted, go to step 1 If the HDS indicates NOT COMPLETED, go to step 19