Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000001980W
Model Year Start: 2018 Model: Sienna Prod Date Range: [11/2017 -           ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: C1AB0; Short to +B in Outer Mirror Indicator(Master); 2018 - 2020 MY Sienna [11/2017 -        ]

DTC

C1AB0

Short to +B in Outer Mirror Indicator(Master)

DESCRIPTION

This DTC is stored when the blind spot monitor sensor RH detects a +B short in the outer rear view mirror indicator RH.

DTC No.

DTC Detection Condition

Trouble Area

C1AB0

Both of the following conditions are met:

  • Blind spot monitor system is on.
  • The blind spot monitor sensor is not sending voltage to the indicator but the indicator receives voltage above a specified level for a specified period of time.
  • Outer rear view mirror RH
  • Outer rear view mirror assembly RH
  • Harness or connector
  • Blind spot monitor sensor RH

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor system is on.

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs (See page 2018 - 2020 MY Sienna [11/2017 -        ]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: DTC CHECK / CLEAR ).

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

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER REAR VIEW MIRROR RH (OUTER REAR VIEW MIRROR INDICATOR RH))

(a) Disconnect the blind spot monitor sensor RH connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

q2-4 (OMIR) - Body ground

Ignition switch ON

Below 1 V

Text in Illustration

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)
OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

3.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER REAR VIEW MIRROR RH (OUTER REAR VIEW MIRROR INDICATOR RH))

(a) Disconnect the IND1 outer rear view mirror RH (outer rear view mirror indicator RH) connector.

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

q2-4 (OMIR) - Body ground

Ignition switch ON

Below 1 V

Text in Illustration

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)
OK

REPLACE OUTER REAR VIEW MIRROR RH (OUTER REAR VIEW MIRROR INDICATOR RH)

NG

4.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER REAR VIEW MIRROR ASSEMBLY RH)

(a) Disconnect the G16*1 or G13*2 outer rear view mirror assembly RH connector.

  • *1: w/ Seat Position Memory System
  • *2: w/o Seat Position Memory System

(b) Measure the voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

q2-4 (OMIR) - Body ground

Ignition switch ON

Below 1 V

Text in Illustration

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)
OK

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR