Toyota CH-R Service Manual: Destination Information Undefined (C1AB8)

Toyota CH-R Service Manual / Park Assist / Monitoring / Blind Spot Monitor System / Destination Information Undefined (C1AB8)

DESCRIPTION

This DTC is stored when correct destination information is not sent from the main body ECU (multiplex network body ECU) and destination information cannot be confirmed after a blind spot monitor sensor has been replaced.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AB8

Destination Information Undefined

The blind spot monitor sensor cannot communicate with the main body ECU
  • CAN communication system
  • Main body ECU (multiplex network body ECU)
  • Blind spot monitor sensor LH (Master)
  • Blind spot monitor sensor RH (Slave)

CAUTION / NOTICE / HINT

NOTICE:

  • When checking for DTCs, make sure that the blind spot monitor system is turned on.
  • Before replacing the main body ECU (multiplex network body ECU), refer to Registration*1.

    Click here

    *1: w/ Smart Key System

PROCEDURE

1.

CHECK DTC

(a) Check for CAN communication system DTCs.

Click here

OK:

CAN communication system DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

OK

2.

REPLACE MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

(a) Replace the main body ECU (multiplex network body ECU).

Click here

NEXT

3.

RECHECK DTC

(a) Recheck for DTCs and check if the same DTC is output again.

Click here

Body Electrical > Blind Spot Monitor Master > Trouble Codes Body Electrical > Blind Spot Monitor Slave > Trouble Codes

Result

Proceed to

No DTCs are output.

A

DTC C1AB8 is output ("Blind Spot Monitor Master").

B

DTC C1AB8 is output ("Blind Spot Monitor Slave").

C
A

END
B

REPLACE BLIND SPOT MONITOR SENSOR LH (MASTER)

C

REPLACE BLIND SPOT MONITOR SENSOR RH (SLAVE)

    Blind Spot Monitor Slave Module Beam Axis Inspection Incomplete (C1ABC)
    DESCRIPTION This DTC is stored when a beam axis adjustment has not been performed for the blind spot monitor sensor RH (Slave). HINT: This DTC is always stored after replacing a blind spot monito ...

    Blind Spot Monitor Master Module Beam Axis Inspection Incomplete (C1ABB)
    DESCRIPTION This DTC is stored when a beam axis adjustment has not been performed for the blind spot monitor sensor LH (Master). HINT: This DTC is always stored after replacing a blind spot monit ...

    Other materials:

    Toyota CH-R Service Manual > Navigation System: Portable Player cannot be Operated Using In-vehicle Device or Track Information is not Displayed on In-vehicle Device
    PROCEDURE 1. CHECK USING ANOTHER "Bluetooth" AUDIO COMPATIBLE VEHICLE OF SAME MODEL (a) Check if track information is displayed normally on another "Bluetooth" audio compatible vehicle of the same model. OK: Track information is displayed no ...

    Toyota CH-R Service Manual > Meter / Gauge System: Lost Communication with ECM / PCM "A" (U0100,U0129,U0131,U0142,U0151,U0182,U0235,U023A)
    DESCRIPTION The combination meter assembly communicates with the ECM, brake actuator assembly (skid control ECU), power steering ECU assembly, main body ECU (multiplex network body ECU), airbag sensor assembly, headlight control ECU sub-assembly LH*1, front camera module*2, millimeter wave ra ...

    Toyota C-HR (AX20) 2023-2025 Owner's Manual

    Toyota CH-R Owners Manual

    Toyota CH-R Service Manual

    © 2017-2025 Copyright www.tochr.net
    0.0097