Toyota CH-R Service Manual: Backup Battery Degradation (B15EC)

• The BUB (Back-Up Battery) charge level becomes less than the criteria.
• The BUB (Back-up Battery) was used for Automatic Collision Notification (ACN).

NOTICE:

• If this DTC is set, be certain to replace the BUB (Back-Up Battery) with a new one.
• After the BUB (Back-Up Battery) is replaced, it is necessary to clear this DTC.
• The BUB (Back-Up Battery) must not be replaced while an ACN call is in progress.

  Click here

Telephone Microphone Error (B1572)

DESCRIPTION This DTC is set when the DCM (Telematics Transceiver) detects a malfunction in the telephone microphone assembly circuit. DTC No. Detection Item DTC De ...

Short in Telephone SUB Antenna Circuit (B1536,B1537)

DESCRIPTION These DTCs are stored when the DCM (Telematics Transceiver) detects an open or a short in the telephone and GPS antenna assembly (for Front Side) circuit. The DCM (Telematics Transcei ...

Other materials:

Toyota CH-R Service Manual > Can Communication System: System Description
SYSTEM DESCRIPTION BRIEF DESCRIPTION (a) The Controller Area Network (CAN) is a serial data communication system for real time application. It is a vehicle multiplex communication system which has a high communication speed and the ability to detect malfunctions. (b) Using the CANH and CANL ...

Toyota CH-R Service Manual > Smart Key System(for Entry Function): Entry Interior Alarm does not Sound
DESCRIPTION The smart key system (for Entry Function) uses the buzzer in the combination meter assembly (meter ECU) to perform various vehicle interior warnings. When the conditions of each warning are met, the certification ECU (smart key ECU assembly) sends a buzzer activation request signa ...