Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Open in Outer Mirror Indicator(Master) (C1AB4)

DESCRIPTION

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

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

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

PROCEDURE

(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.

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

(a) Disconnect the X2 blind spot monitor sensor LH connector.

(b) Disconnect the N4 outer mirror control ECU assembly LH connector.

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

Standard Resistance:

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

(a) Disconnect the z12 outer rear view mirror assembly LH connector.

(b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition N4-13 (BDSL) - z12-8 (BSM+) Always Below 1 Ω N4-7 (GND) - z12-12 (TRN-) Always Below 1 Ω

*a Component without harness connected (Outer Mirror Control ECU Assembly LH)

NG

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY LH

OK

(a) Disconnect the IND1 outer mirror LH connector.

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

Standard Resistance:

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

OK

(a) Remove the outer mirror LH.

Click here

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

Click here

OK

REPLACE BLIND SPOT MONITOR SENSOR LH

NG

REPLACE OUTER MIRROR LH