Toyota CH-R Service Manual: No Response from ID BOX (B2789)

NOTICE:

• Inspect the fuses for circuits related to this system before performing the following procedure.
• When using the Techstream with the ignition switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Key. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
• If the certification ECU (smart key ECU assembly) or ID code box (immobiliser code ECU) is replaced, refer to Registration.

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No Response from Steering Lock ECU (B2786)

DESCRIPTION This DTC is stored when LIN communication between the certification ECU (smart key ECU assembly) and steering lock ECU steering lock actuator or upper bracket assembly) stops for 10 s ...

Communication Malfunction between ECUs Connected by LIN (B2785)

DESCRIPTION If the certification ECU (smart key ECU assembly) detects a communication error with an ECU connected to the certification bus lines for 7 seconds or more, DTC B2785 will be stored. ...

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Toyota CH-R Service Manual > Wireless Door Lock Control System(w/o Smart Key System): Only Wireless Control Function is Inoperative
DESCRIPTION The door control and tire pressure monitoring system receiver assembly receives signals from the door control transmitter assembly and sends these signals to the main body ECU (multiplex network body ECU). The main body ECU (multiplex network body ECU) then controls all doors by s ...

Toyota CH-R Service Manual > Noise Filter: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT RADIO SETTING CONDENSER (a) With the radio setting condenser installed, check that there is no looseness or other abnormalities. (b) Measure the resistance of the radio setting condenser according to the value(s) in the table below. ...