Lexus NX manuals

Lexus NX: Short to +B in Outer Mirror Indicator(Slave) (C1AB1)

Lexus NX Service Manual / Audio & Visual & Telematics / Park Assist / Monitoring / Blind Spot Monitor System / Short to +B in Outer Mirror Indicator(Slave) (C1AB1)

DESCRIPTION

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

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Note

C1AB1

Short to +B in Outer Mirror Indicator(Slave)
Both of the following conditions are met:
  • The blind spot monitor main switch (combination switch assembly) is on.
  • The blind spot monitor sensor is not sending voltage to the indicator but the indicator receives voltage above a specified level for a specified period of time.
  • Outer mirror RH (outer rear view mirror indicator RH)
  • Outer rear view mirror assembly RH (w/o Retract Mirror)
  • Harness or connector
  • Outer Mirror Retractor RH (w/ Retract Mirror)
  • Blind spot monitor sensor RH
  • Outer mirror control ECU assembly RH

-

WIRING DIAGRAM

w/o Retract Mirror w/ Retract Mirror

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 C1AB1 is not output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

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

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

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

X1-4 (OMIR) - Body ground

Power switch on (IG)

Below 1 V
OK

REPLACE BLIND SPOT MONITOR SENSOR RH

NG

3.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - OUTER REAR VIEW MIRROR 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 IND2 outer mirror RH connector.

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

X1-4 (OMIR) - Body ground

Power switch on (IG)

Below 1 V
OK

REPLACE OUTER MIRROR RH

NG

4.

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 voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

X1-4 (OMIR) - Body ground

Power switch on (IG)

Below 1 V

Result

Proceed to

OK (w/o Retract Mirror)

A

OK (w/ Retract Mirror)

B

NG

C
A

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY RH

B

REPLACE OUTER MIRROR RETRACTOR RH

C

5.

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 voltage according to the value(s) in the table below.

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

X1-4 (OMIR) - Body ground

Power switch on (IG)

Below 1 V
OK

REPLACE OUTER MIRROR CONTROL ECU ASSEMBLY

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

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