what could cause my Acura MDX YF3 (2022-Present) to have delayed shifting

Solution

1. Preparation

• Gather tools and parts required.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to avoid electrical shorts.

2. Check Transmission Fluid

• Remove the transmission dipstick (if applicable) and wipe it clean.
• Reinsert the dipstick and remove it again to check fluid level; add the appropriate ATF if low.
• Inspect the fluid for color and odor; if it is dark or smells burnt, consider a fluid change.

3. Inspect and Clean TCM Connections

• Locate the TCM, typically found near the transmission.
• Disconnect the TCM connector and inspect for corrosion or damage.
• Clean the connector pins gently with electrical contact cleaner and reconnect.

4. Throttle Position Sensor Testing

• Locate the TPS, usually mounted on the throttle body.
• Using a multimeter, check the voltage output of the TPS while manually opening the throttle. It should show a smooth, linear increase.
• If readings are erratic or outside specifications, replace the TPS.

5. Transmission Fluid Change (if needed)

• Drain the old transmission fluid by removing the drain plug.
• Replace the transmission filter if applicable.
• Refill with the manufacturer-recommended transmission fluid type (consult the owner’s manual for specifications).
• Torque the drain plug to the manufacturer's specifications.

6. Reconnect Battery and Test

• Reconnect the battery terminals.
• Start the vehicle and allow it to reach operating temperature.
• Test drive the vehicle to ensure proper shifting is restored.