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)

Sliding Roof ECU Communication Stop (B1273)
DESCRIPTION This DTC is stored when LIN communication between the sliding roof ECU (sliding roof drive gear sub-assembly) and main body ECU (driver side junction block assembly) stops for more th ...

Lost Communication with AFS LIN (B124D)
DESCRIPTION Refer to DTC B124D (Lighting system) (See page ). DTC No. DTC Detection Condition Trouble Area B124D Malfunctions in LIN co ...

Other materials about Toyota Venza:

Cancellation of 4WD Control (C1299/99)
DESCRIPTION If wheel slip continues, differential control will be disabled when the torque-distribution ratio of the differential clutch exceeds the set value and a malfunction in the output of the wheel speed sensors, etc. occurs. If a ...

System Description
SYSTEM DESCRIPTION 1. WIRELESS DOOR LOCK CONTROL SYSTEM The wireless door lock control system can be used to lock and unlock all doors from a distance. The system is controlled by a door control transmitter which sends radio waves to the door control rec ...

Wireless Door Lock Tuner Circuit Malfunction (B1242)
DESCRIPTION The door control receiver is used to receive electrical waves relating to the entry functions of the smart key system. The certification ECU (smart key ECU assembly) decodes the requested smart key system operation by identifying a key code ba ...

© 2016-2026 Copyright www.tovenza.com

0.1343