Toyota Venza manuals

Toyota Venza: LIN Communication Master Malfunction (B2287)

Toyota Venza Service Manual / Networking / Lin Communication System / LIN Communication Master Malfunction (B2287)

DESCRIPTION

This DTC is stored when there is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).

DTC No.

DTC Detection Condition

Trouble Area

B2287

There is an open, short or ECU communication malfunction between the power management control ECU and certification ECU (smart key ECU assembly).

  • Power management control ECU
  • Certification ECU (Smart key ECU assembly)
  • Wire harness or connector

WIRING DIAGRAM


CAUTION / NOTICE / HINT

NOTICE:

  • If the certification ECU (smart key ECU assembly) is replaced, register the key.
  • When using the Techstream to troubleshoot with the ignition switch off:

    Connect the Techstream to the DLC3, and turn the courtesy switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.

PROCEDURE

1.

CHECK DTC OUTPUT

(a) Clear the DTC (See page ).


(b) Recheck for DTCs.

HINT:

Check for certification ECU and power source control ECU DTCs.

Result

Proceed to

Only DTC B2287 is output.

A

DTC B2287 and B2785 are output simultaneously.

B

HINT:

When DTC B2287 and B2785 are output simultaneously, perform troubleshooting for DTC B2785 first.


B

GO TO DTC B2785


A

2.

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - POWER MANAGEMENT CONTROL ECU)

(a) Disconnect the D25 and D43 ECU connectors.


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

Standard Resistance:

Tester Connection

Condition

Specified Condition

D25-29 (LIN) - D43-24 (LIN2)

Always

Below 1 Ω

D25-29 (LIN) - Body ground

Always

10 kΩ or higher

Text in Illustration

*1

Front view of wire harness connector

(to Certification ECU (Smart Key ECU Assembly)

*2

Front view of wire harness connector

(to Power Management Control ECU)


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR


OK

3.

REPLACE POWER MANAGEMENT CONTROL ECU

(a) Replace the power management control ECU (See page ).



NEXT

4.

CHECK DTC OUTPUT

(a) Clear the DTC (See page ).


(b) Recheck for DTCs.

OK:

DTC B2287 is not output.


OK

END (POWER MANAGEMENT CONTROL ECU WAS DEFECTIVE)


NG

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

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