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Toyota Tacoma (2015-2018) Service Manual / Park Assist / Monitoring / Blind Spot Monitor System / Lost Communication with Blind Spot Monitor Slave Module (U0232)

Toyota Tacoma (2015-2018) Service Manual: Lost Communication with Blind Spot Monitor Slave Module (U0232)

DESCRIPTION

This DTC is stored when the blind spot monitor sensor LH judges that there is a communication problem with the blind spot monitor sensor RH.

DTC Code

DTC Detection Condition

Trouble Area

U0232

The blind spot monitor sensor LH cannot receive signals from the blind spot monitor sensor RH.
  • CAN communication Line
  • Harness or connector
  • Blind spot monitor sensor LH
  • Blind spot monitor sensor RH

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.
  • Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE

1.

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

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

(b) Disconnect the B13 blind spot monitor sensor RH connector.

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

B12-1 (CA2P) - B13-1 (CA2P)

Always

Below 1 Ω

B12-6 (CA2N) - B13-6 (CA2N)

Always

Below 1 Ω
NG

REPAIR OR REPLACE CAN LINE OR CONNECTOR
OK

2.

CHECK HARNESS AND CONNECTOR (BLIND SPOT MONITOR SENSOR RH - BATTERY AND BODY GROUND)

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

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

Standard Voltage:

Tester Connection

Switch Condition

Specified Condition

B13-5 (BLB) - Body ground

Ignition switch ON

11 to 14 V

Ignition switch off

Below 1 V

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

B13-10 (BRGD) - Body ground

Always

Below 1 Ω
Text in Illustration

*a

Front view of wire harness connector

(to Blind Spot Monitor Sensor RH)
NG

REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

3.

CHECK BLIND SPOT MONITOR SENSOR RH

(a) Replace the blind spot monitor sensor RH with a new or normally functioning one (See page (b) Clear the DTCs (See page ). ).

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

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

OK:

No DTCs are output.

OK

END (BLIND SPOT MONITOR SENSOR RH WAS DEFECTIVE)
NG

REPLACE BLIND SPOT MONITOR SENSOR LH

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