how to fix Honda Accord 9th Generation (2013-2017) transmission slipping when shifting

Solution

1. Preparation

• Tools Required: OBD-II scanner, jack and jack stands, transmission fluid dipstick, multimeter, socket set.
• Ensure the vehicle is parked on a level surface and the engine is turned off.
• Engage the parking brake for safety.

2. Check and Replace Transmission Fluid

1. Check Fluid Level
   • Remove the transmission dipstick and wipe it clean.
   • Reinsert the dipstick and remove it again to check the fluid level. It should be within the marked range.
2. Inspect Fluid Condition
   • Check the color and smell of the fluid. If it is dark or burnt, it needs to be replaced.
3. Drain Old Fluid
   • Place a drain pan under the transmission pan.
   • Remove the transmission pan bolts and carefully lower the pan to drain the fluid.
4. Replace with New Fluid
   • Install a new gasket on the transmission pan.
   • Refill the transmission with the recommended fluid type (Honda ATF-Z1 or a suitable equivalent).
   • Ensure the fluid level is correct after filling.

3. Inspect and Replace Transmission Filter (if applicable)

1. Remove Transmission Pan
   • If the transmission filter is accessible, remove the pan as described above.
2. Replace Filter
   • Remove the old filter and install a new transmission filter.
   • Reinstall the transmission pan and securely fasten it with the specified torque (usually around 10-12 ft-lbs).

4. Test Transmission Solenoids

1. Remove Electrical Connector
   • Disconnect the electrical connector from the transmission solenoids.
2. Test Resistance
   • Use a multimeter to check the resistance of each solenoid. Compare readings to manufacturer specifications.
3. Replace Any Faulty Solenoids
   • If any solenoids are out of specification, they should be replaced.

5. Reconnect and Test

1. Reconnect Electrical Connections
   • Ensure all electrical connections to the TCM and solenoids are secure.
2. Clear Fault Codes
   • Use the OBD-II scanner to clear any stored error codes.
3. Road Test
   • Take the vehicle for a test drive to check for any remaining slipping issues.