Lexus NX: Short to GND in Outer Mirror Indicator(Slave) (C1AB3)

Lexus NX Service Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Blind Spot Monitor System / Short to GND in Outer Mirror Indicator(Slave) (C1AB3)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

C1AB3

Short to GND in Outer Mirror Indicator(Slave)

Both of the following conditions are met:
  • The blind spot monitor main switch (combination switch assembly) 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 indicator RH)
  • Outer mirror retractor RH
  • 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 main switch (combination switch assembly) is on.

PROCEDURE

1.

CHECK DTC

(a) Clear the DTCs.

Click here

Body Electrical > Blind Spot Monitor Slave > Clear DTCs

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

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

OK:

DTC C1AB3 is not 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 blind spot monitor sensor RH connector.

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)

(b) Disconnect the L5 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

X1-4 (OMIR) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

CHECK OUTER REAR VIEW MIRROR ASSEMBLY RH

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

*a

Front view of wire harness connector

(to Outer Rear View Mirror Assembly RH)

(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

l5-8 (BSM+) - Body ground

Always

10 kΩ or higher

NG

REPLACE OUTER MIRROR RETRACTOR RH

OK

4.

CHECK OUTER MIRROR CONTROL ECU ASSEMBLY RH

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

*a

Component without harness connected

(Outer Mirror Control ECU Assembly RH)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

L5-13 (BDSR) - L5-7 (GND)

Always

10 kΩ or higher

NG

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY RH

OK

5.

INSPECT OUTER MIRROR RH

(a) Replace 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 (OUTER REAR VIEW MIRROR INDICATOR RH)

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