SYSTEM DIAGRAM

Parts Location
System DescriptionToyota CH-R Service Manual > Smart Key System(for Start Function): Lost Communication with ECM / PCM (U0100,U0140,U0142,U0155,U1117)
DESCRIPTION
These DTCs are stored when there is a CAN communication malfunction between the
certification ECU (smart key ECU assembly), ECM, main body ECU (multiplex network
body ECU) or combination meter assembly, and data from the option connector (bus
buffer ECU) cannot be received.
...
Toyota CH-R Service Manual > Continuously Variable Transaxle System: Torque Converter Clutch Solenoid Circuit Low (P2769,P2770)
DESCRIPTION
Based on the signal received by the shift solenoid valve SL, the ECM uses the
shift solenoid valve SLU to control the lock-up clutch pressure.
If there is an open or short in the shift solenoid valve SL circuit, the ECM
stops sending current to the defective shift solenoid valve.
...