Toyota CH-R Service Manual: Detecting Vehicle Submersion (B2277)

• *: Only detected while a malfunction is present.

NOTICE:

• When using the Techstream with the engine 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.
• The smart key system (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart key system (for Start Function) after confirming that the communication systems are functioning properly.

  Click here

• Before replacing the certification ECU (smart key ECU assembly), refer to smart key system (for Start Function) Precaution.

  Click here

• After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT:

• Before proceeding with troubleshooting, check if there are any signs of water damage to the certification ECU (smart key ECU assembly). If there are any signs of water damage, replace the certification ECU (smart key ECU assembly) and take measures against the cause of the water damage.
• When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

ACC Monitor Malfunction (B2274)

DESCRIPTION This DTC is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit between terminal ACCD of the certification ECU (smart key ECU assemb ...

Engine/Power Switch Malfunction (B2278)

DESCRIPTION This DTC is stored when the SSW1 contact signal and SSW2 contact signal, which are detected when the engine switch is operated, do not match. DTC No. Detection It ...

Other materials:

Toyota CH-R Service Manual > Can Communication System: Open in One Side of Bus 3 Branch Line
DESCRIPTION When the CAN bus main lines are normal (no open, short to ground, short to +B or short between lines) and there is an ECU or sensor on the "Communication Bus Check" screen that is indicated as not communicating or whose connection status on the "Communication Bus Ch ...

Toyota CH-R Service Manual > Door Control Transmitter(w/o Smart Key System): Components
COMPONENTS ILLUSTRATION *1 DOOR CONTROL TRANSMITTER PACKING *2 TRANSMITTER BATTERY *3 TRANSMITTER HOUSING COVER *4 TRANSMITTER HOUSING CASE ...