Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJB1
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 11/2017]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: C1AB8; Destination Information Undefined; 2016 - 2017 MY Sienna [12/2015 - 11/2017]

DTC

C1AB8

Destination Information Undefined

DESCRIPTION

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

DTC No.

DTC Detection Condition

Trouble Area

C1AB8

The blind spot monitor sensor cannot communicate with the main body ECU.

  • CAN communication system
  • Main body ECU
  • Blind spot monitor sensor RH
  • Blind spot monitor sensor LH

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor main switch (warning canceling switch assembly) is on.

PROCEDURE

1.

CHECK DTC (CAN COMMUNICATION SYSTEM)

(a) Check for DTCs of the CAN communication system (See page 2016 MY Sienna [12/2015 - 08/2016]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM 2017 MY Sienna [08/2016 - 11/2017]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSIS SYSTEM ).

OK:

CAN communication system DTCs are not output.

NG

GO TO CAN COMMUNICATION SYSTEM

(See page 2016 MY Sienna [12/2015 - 08/2016]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART 2017 MY Sienna [08/2016 - 11/2017]; NETWORKING: CAN COMMUNICATION SYSTEM: DIAGNOSTIC TROUBLE CODE CHART )

OK

2.

REPLACE MAIN BODY ECU

(a) Replace the main body ECU (See page 2016 - 2020 MY Sienna [12/2015 -        ]; POWER DISTRIBUTION: MAIN BODY ECU: REMOVAL ).

NEXT

3.

RECHECK DTC

(a) Recheck for DTCs and check if the same DTC is output again (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: DTC CHECK / CLEAR ).

Result

Result

Proceed to

No DTC is output

A

DTC is output from the blind spot monitor Master

B

DTC is output from the blind spot monitor Slave

C

A

END (MAIN BODY ECU WAS DEFECTIVE)

B

REPLACE BLIND SPOT MONITOR SENSOR RH

C

REPLACE BLIND SPOT MONITOR SENSOR LH