Last Modified: 04-05-2023 6.11:8.1.0 Doc ID: RM100000000VJB4
Model Year Start: 2016 Model: Sienna Prod Date Range: [12/2015 - 11/2017]
Title: PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: U0232; Lost Communication with Blind Spot Monitor Slave Module; 2016 - 2017 MY Sienna [12/2015 - 11/2017]

DTC

U0232

Lost Communication with Blind Spot Monitor Slave Module

DESCRIPTION

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

DTC No.

DTC Detection Condition

Trouble Area

U0232

The blind spot monitor sensor RH cannot receive signals from the blind spot monitor sensor LH.

  • CAN communication Line
  • Blind spot monitor sensor LH
  • Blind spot monitor sensor RH

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

  • When checking for DTCs, make sure that the blind spot monitor main switch (warning canceling switch assembly) is on.
  • Inspect the fuses for circuits related to this system before performing the following procedure.

PROCEDURE

1.

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

(a) Disconnect the q2 blind spot monitor sensor RH connector.

(b) Disconnect the q3 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

q2-1 (CA2P) - q3-1 (CA2P)

Always

Below 1 Ω

q2-6 (CA2N) - q3-6 (CA2N)

Always

Below 1 Ω

NG

REPAIR OR REPLACE CAN LINE ORCONNECTOR

OK

2.

CHECK HARNESS AND CONNECTOR (POWER SOURCE TERMINAL)

(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

q2-5 (BRB) - Body ground

Ignition switch ON

11 to 14 V

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 HARNESS AND CONNECTOR (GROUND TERMINAL)

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

q2-10 (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

4.

REPLACE BLIND SPOT MONITOR SENSOR RH

(a) Replace the blind spot monitor sensor RH (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SENSOR: REMOVAL ).

NEXT

5.

CHECK DTC

(a) Clear the DTCs (See page 2016 - 2017 MY Sienna [12/2015 - 11/2017]; PARK ASSIST / MONITORING: BLIND SPOT MONITOR SYSTEM: DTC CHECK / CLEAR ).

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

OK:

No DTCs are output.

OK

END (BLIND SPOT MONITOR SENSOR RH WAS DEFECTIVE)

NG

REPLACE BLIND SPOT MONITOR SENSOR LH