Toyota RAV4 manuals

Toyota Sienna Service Manual: Wireless Door Lock Tuner Circuit Malfunction

DTC B1242 Wireless Door Lock Tuner Circuit Malfunction

DESCRIPTION

When a RDA signal is not input to the door control receiver within 1 second after the multiplex network body ECU outputs a PRG signal, this DTC is set.

DTC No.

DTC Detection Condition

Suspected Area

B1242

Within 1 second after PRG signal is output from multiplex network body ECU during self-diagnostic mode, corresponding RDA signal is not input
  • Wire harness
  • Door control receiver
  • Multiplex network body ECU

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - MULTIPLEX NETWORK BODY ECU)

CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - MULTIPLEX NETWORK BODY ECU)

  1. Disconnect the D4 receiver connector.
  2.  Disconnect the B9 ECU connector.
  3.  Check the resistance between the wire harness side connectors.

Standard resistance

Standard resistance

  1. Check the voltage and resistance between the D4 receiver connector or B9 ECU connector and the body ground.

Standard

Standard

2 CHECK DOOR CONTROL RECEIVER

  1. Check that the DTC is not output.

REPLACE MULTIPLEX NETWORK BODY ECU

Diagnostic trouble code chart
HINT:  If a trouble code is displayed during the DTC check, inspect the circuit listed for that code. For details of the code, refer to the "See page" in the DTC chart.   ...

No Answer-Back (Hazard Warning Light and Wireless Door Lock Buzzer)
DESCRIPTION If there is no answer-back of the hazard light signal and the wireless door lock buzzer although the wireless control function is operating normally, there might be a malfunction in ...

Other materials:

Cranking Holding Function Circuit
DESCRIPTION The system detects the ignition switch's starting signal (STSW) and then supplies current to the starter until the ECM judges that the engine has started successfully. The purpose is to reduce the holding time of the ignition key. WIRING DIAGRAM Refer to DTC P0617 (See page ...

Folding down the third seats (power seats)
You can operate the power third seats when the shift lever is in P. Before folding the third seats Lower the center head restraint to the lowest position and stow the seat belt buckles. Stow the center seat belt. Folding down the third seatbacks Press the folding/returning ...

Headlight Relay Circuit
DESCRIPTION The Multiplex network body ECU controls HEAD relay when signal is received from headlight dimmer switch assembly. WIRING DIAGRAM INSPECTION PROCEDURE 1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER Connect the intelligent tester to DLC3.  Turn the ignition switch ON and ...

В© 2011-2024 Copyright www.tsienna.net