how to diagnose U0101 code in my Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather tools and safety equipment.
• Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect Wiring and Connectors

• Remove any protective coverings to access the wiring harness.
• Visually inspect the wiring for frays, breaks, or corrosion.
• Use a multimeter to check for continuity in the wires connecting the ECM and TCM.

3. Repair or Replace Damaged Components

• If damaged wiring is found, repair using appropriate gauge wire and solder connections.
• If connectors are corroded, clean them with electrical contact cleaner or replace them if necessary.

4. Check and Replace Fuses

• Locate the fuse box and check the fuses related to the ECM and TCM.
• Replace any blown fuses with the same amperage rating.

5. Reconnect and Test

• Reconnect the battery terminal.
• Clear the U0101 code using the OBD-II scanner.
• Start the vehicle and allow it to reach operating temperature.