Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001BX3N
Model Year Start: 2019 Model: Avalon HV Prod Date Range: [04/2018 -           ]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM(for HV Model): C1AB5; Open in Outer Mirror Indicator(Slave); 2019 - 2022 MY Avalon HV [04/2018 -        ]

DTC

C1AB5

Open in Outer Mirror Indicator(Slave)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AB5

Open in Outer Mirror Indicator(Slave)

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 LH
  • Outer rear view mirror assembly LH
  • Wire harness or connector
  • Blind spot monitor sensor LH
  • Outer mirror control ECU assembly LH*
  • *: 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 Slave > 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 LH - BLIND SPOT MONITOR SENSOR LH AND BODY GROUND)

(a) Disconnect the P6 blind spot monitor sensor LH connector.

(b) Disconnect the I28 outer rear view mirror assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

P6-4 (OMIL) - I28-7 (BSL+)

Always

Below 1 Ω

I28-6 (-) - Body ground

Always

Below 1 Ω
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

(a) Disconnect the IND2 outer mirror LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I28-7 (BSL+) - IND2-2 (+)

Always

Below 1 Ω

I28-6 (-) - IND2-1 (-)

Always

Below 1 Ω
NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

OK

4.

INSPECT OUTER MIRROR LH

(a) Remove the outer mirror LH.

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 LH on the outer mirror LH.

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

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPLACE OUTER MIRROR LH

5.

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

(a) Disconnect the P6 blind spot monitor sensor LH connector.

(b) Disconnect the I28*1 or I29*2 outer rear view mirror assembly LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

P6-4 (OMIL) - I28-7 (BSL+)*1

Always

Below 1 Ω

P6-4 (OMIL) - I29-7 (BSL+)*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 LH - OUTER MIRROR CONTROL ECU ASSEMBLY LH AND BODY GROUND)

(a) Disconnect the I28*1 or I29*2 outer rear view mirror assembly LH connector.

(b) Disconnect the I22 and I21 outer mirror control ECU assembly LH connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I28-6 (-) - I22-12 (RTN)*1

Always

Below 1 Ω

I29-6 (-) - I22-12 (RTN)*2

Always

Below 1 Ω

I21-7 (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 LH

(a) Disconnect the I21 and I22 outer mirror control ECU assembly LH connectors.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I21-7 (GND) - I22-12 (RTN)

Always

Below 1 Ω

*a

Component without harness connected

(Outer Mirror Control ECU Assembly LH)
NG

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH

OK

8.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY LH

(a) Disconnect the IND2 outer mirror LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

I28-7 (BSL+) - IND2-2 (+)*1

Always

Below 1 Ω

I28-6 (-) - IND2-1 (-)*1

Always

Below 1 Ω

I29-7 (BSL+) - IND2-2 (+)*2

Always

Below 1 Ω

I29-6 (-) - IND2-1 (-)*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 LH

OK

9.

INSPECT OUTER MIRROR LH

(a) Remove the outer mirror LH.

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 LH on the outer mirror LH.

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

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPLACE OUTER MIRROR LH