DTC U0131: Lost Communication with Power Steering Control Module [05/2023 - ]: Procedure

1. Disconnect the cable from the negative (-) battery terminal.
2. Disconnect the rack and pinion power steering gear assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Rack and Pinion Power Steering Gear Assembly)

3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C1-5 (CA2H) - C1-6 (CA2L)	Cable disconnected from negative (-) battery terminal	54 to 69 Ω

   Result

   Result
   OK
   NG

Result: 

OK 

REPLACE RACK AND PINION POWER STEERING GEAR ASSEMBLY. Refer to  REMOVAL [05/2023 - 09/2023]  , or refer to  REMOVAL [09/2023 - ] 

Result: 

NG 

REPAIR OR REPLACE CAN BRANCH WIRE OR CONNECTOR