Lexus RX (RX 350L, RX450h) 2016-2024 Repair Manual: Short to GND in Outer Mirror Indicator(Slave) (C1AB3)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

C1AB3

Short to GND in Outer Mirror Indicator(Slave)

Both of the following conditions are met:
  • The blind spot monitor system is on
  • The current that is sent from the blind spot monitor sensor to the indicator is above a specified level for a specified period of time
  • Outer mirror RH
  • Outer rear view mirror assembly RH
  • Wire harness or connector
  • Blind spot monitor sensor RH
  • Outer mirror control ECU assembly RH

WIRING DIAGRAM

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 engine switch off.

(b) Turn the engine 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.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER MIRROR CONTROL ECU ASSEMBLY RH)

(a) Disconnect the W2 blind spot monitor sensor RH connector.

(b) Disconnect the M4 outer mirror control ECU assembly RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

W2-4 (OMIR) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

INSPECT OUTER REAR VIEW MIRROR ASSEMBLY RH

(a) Disconnect the z13 outer rear view mirror assembly RH connector.

(b) Disconnect the IND2 outer mirror RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

z13-8 (BSM+) - Body ground

Always

10 kΩ or higher

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

OK

4.

INSPECT OUTER MIRROR CONTROL ECU ASSEMBLY RH

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

M4-13 (BDSR) - M4-7 (GND)

Always

10 kΩ or higher

*a

Component without harness connected

(Outer Mirror Control ECU Assembly RH)

NG

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH

OK

5.

INSPECT OUTER MIRROR RH

(a) Remove the outer mirror RH.

Click here

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

Click here

OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

REPLACE OUTER MIRROR RH

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