DTC U0100-87: Lost Communication with ECM/PCM "A" Missing Message; DTC U0104-87: Lost Communication with Cruise Control Module Missing Message; DTC U0110-87: Lost Communication with Drive Motor Control Module "A" Missing Message; DTC U0122-87: Lost Communication with Vehicle Dynamics Control Module Missing Message; DTC U0129-87: Lost Communication with Brake System Control Module Missing Message; DTC U0140-87: Lost Communication with Body Control Module Missing Message; DTC U0151-87: Lost Communication with Restraints Control Module Missing Message; DTC U0164-87: Lost Communication with HVAC Control Module Missing Message; DTC U0293-87: Lost Communication with Hybrid/EV Powertrain Control Module Missing Message; DTC U1107-87: Lost Communication with Power Management Module Missing Message; DTC U1170-87: Lost Communication with Brake System Control Module (Secondary CAN Line) Missing Message [11/2018 - 08/2020]: Procedure

WARNING: This page is about a different car, the 2020 Toyota RAV4 and 2019 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

CHECK DTC OUTPUT

Connect the Techstream to the DLC3.
Turn the power switch on (IG).
Check for DTCs of all systems by following the prompts on the Techstream screen.

Check for DTCs.

Result

Result	Proceed to
Hybrid vehicle control ECU assembly outputs P2530-12.	A
Hybrid vehicle control ECU assembly does not output P2530-12.	B

Turn the power switch off.

Result:

GO TO DTC CHART (P2530-12). Refer to DTC P2530-12: IG2 Signal Circuit Short to Auxiliary Battery [11/2018 - 08/2020]

Result:

GO TO CAN COMMUNICATION SYSTEM. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2018 - 02/2019] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [02/2019 - ]