Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BX3M
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM(for HV Model): C1AB4; Open in Outer Mirror Indicator(Master); 2019 - 2022 MY Avalon HV [04/2018 -        ]

DTC

C1AB4

Open in Outer Mirror Indicator(Master)

DESCRIPTION

This DTC is stored when the blind spot monitor sensor RH detects an open in the outer rear view mirror indicator RH.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AB4

Open in Outer Mirror Indicator(Master)

Both of the following conditions are met:

  • The blind spot monitor system is on
  • The current flowing to the indicator is below a specified value when indicator operation voltage is being sent to the indicator
  • Outer mirror RH
  • Outer rear view mirror assembly RH
  • Wire harness or connector
  • Blind spot monitor sensor RH
  • Outer mirror control ECU assembly RH*
  • *: w/ Seat Memory

WIRING DIAGRAM

w/o Seat Memory
w/ Seat Memory

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

1.

CHECK DTC

(a) Turn the power switch off.

(b) Turn the power switch on (IG).

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

Body Electrical > Blind Spot Monitor Master > Trouble Codes

OK:

No DTCs are output.

Result

Proceed to

OK

A

NG (w/o Seat Memory)

B

NG (w/ Seat Memory)

C
A

USE SIMULATION METHOD TO CHECK

C

GO TO STEP 5

B

2.

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

(a) Disconnect the P5 blind spot monitor sensor RH connector.

(b) Disconnect the I12 outer rear view mirror assembly RH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

P5-4 (OMIR) - I12-7 (BSR+)

Always

Below 1 Ω

I12-6 (-) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

(a) Disconnect the IND1 outer mirror RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I12-7 (BSR+) - IND1-2 (+)

Always

Below 1 Ω

I12-6 (-) - IND1-1 (-)

Always

Below 1 Ω
NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

OK

4.

INSPECT OUTER MIRROR RH

(a) Remove the outer mirror RH.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: REMOVAL

(b) Inspect the outer rear view mirror indicator RH on the outer mirror RH.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: INSPECTION

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPLACE OUTER MIRROR RH

5.

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

(a) Disconnect the P5 blind spot monitor sensor RH connector.

(b) Disconnect the I12*1 or I13*2 outer rear view mirror assembly RH connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

P5-4 (OMIR) - I12-7 (BSR+)*1

Always

Below 1 Ω

P5-4 (OMIR) - I13-7 (BSR+)*2

Always

Below 1 Ω
  • *1: w/o Panoramic View Monitor System
  • *2: w/ Panoramic View Monitor System
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

6.

CHECK HARNESS AND CONNECTOR (OUTER REAR VIEW MIRROR ASSEMBLY RH - OUTER MIRROR CONTROL ECU ASSEMBLY RH AND BODY GROUND)

(a) Disconnect the I12*1 or I13*2 outer rear view mirror assembly RH connector.

(b) Disconnect the I5 and I6 outer mirror control ECU assembly RH connectors.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection

Condition

Specified Condition

I12-6 (-) - I6-12 (RTN)*1

Always

Below 1 Ω

I13-6 (-) - I6-12 (RTN)*2

Always

Below 1 Ω

I5-7 (GND) - Body ground

Always

Below 1 Ω
  • *1: w/o Panoramic View Monitor System
  • *2: w/ Panoramic View Monitor System
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

7.

INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY RH

(a) Disconnect the I5 and I6 outer mirror control ECU assembly RH connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I5-7 (GND) - I6-12 (RTN)

Always

Below 1 Ω

*a

Component without harness connected

(Outer Mirror Control ECU Assembly RH)
NG

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH

OK

8.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

(a) Disconnect the IND1 outer mirror RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I12-7 (BSR+) - IND1-2 (+)*1

Always

Below 1 Ω

I12-6 (-) - IND1-1 (-)*1

Always

Below 1 Ω

I13-7 (BSR+) - IND1-2 (+)*2

Always

Below 1 Ω

I13-6 (-) - IND1-1 (-)*2

Always

Below 1 Ω
  • *1: w/o Panoramic View Monitor System
  • *2: w/ Panoramic View Monitor System
NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

OK

9.

INSPECT OUTER MIRROR RH

(a) Remove the outer mirror RH.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: REMOVAL

(b) Inspect the outer rear view mirror indicator RH on the outer mirror RH.

Click here 2019 - 2022 MY Avalon Avalon HV [04/2018 -        ]; MIRROR (EXT): OUTER REAR VIEW MIRROR GLASS: INSPECTION

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPLACE OUTER MIRROR RH