Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: Short to GND in Outer Mirror Indicator(Master) (C1AB2)

Toyota Tacoma 2015-2018 Service Manual / Park Assist / Monitoring / Blind Spot Monitor System / Short to GND in Outer Mirror Indicator(Master) (C1AB2)

DESCRIPTION

This DTC is stored when the blind spot monitor sensor LH detects a ground short in the blind spot monitor indicator LH.

DTC Code

DTC Detection Condition

Trouble Area

C1AB2

With the blind spot monitor main switch assembly (warning canceling switch assembly) on, the voltage output from the blind spot monitor sensor to the indicator is low for a certain amount of time.

  • Harness or connector
  • Outer rear view mirror assembly LH
  • Outer rear view mirror LH
  • Blind spot monitor sensor LH

WIRING DIAGRAM

CAUTION / NOTICE / HINT

CAUTION / NOTICE / HINT

NOTICE:

When checking for DTCs, make sure that the blind spot monitor main switch assembly (warning canceling switch assembly) is on.

PROCEDURE

1.

CHECK DTC

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

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

OK:

No DTCs are output.

OK

USE SIMULATION METHOD TO CHECK

NG

2.

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

(a) Disconnect the O2 outer rear view mirror assembly LH connector.

(b) Disconnect the B12 blind spot monitor sensor LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

O2-1 (BSL+) - Body ground

Always

10 kΩ or higher

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

3.

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

(a) Reconnect the O2 outer rear view mirror assembly LH connector.

(b) Disconnect the blind spot monitor sensor LH connector.

(c) Disconnect the A outer rear view mirror LH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

B12-4 (OMIL) - Body ground

Always

10 kΩ or higher

Text in Illustration

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor LH)

NG

REPLACE OUTER REAR VIEW MIRROR ASSEMBLY LH

OK

4.

CHECK OUTER REAR VIEW MIRROR LH

(a) Replace the outer rear view mirror LH with a new or normally functioning one (See page (b) Clear the DTCs (See page  ). ).

(b) Clear the DTCs (See page (c) Check for DTCs and check if the same DTC is output again (See page ).

(c) Check for DTCs and check if the same DTC is output again (See page OK: ).

OK:

No DTCs are output.

OK

END (OUTER REAR VIEW MIRROR LH WAS DEFECTIVE)

NG

REPLACE BLIND SPOT MONITOR SENSOR LH

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