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 |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 CHECK HARNESS AND CONNECTOR (DOOR CONTROL RECEIVER - MULTIPLEX NETWORK BODY ECU)
- Disconnect the D4 receiver connector.
- Disconnect the B9 ECU connector.
- Check the resistance between the wire harness side connectors.
Standard resistance
- Check the voltage and resistance between the D4 receiver connector or B9 ECU connector and the body ground.
Standard
2 CHECK DOOR CONTROL RECEIVER
- 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:
Inspection procedure
1 BASIC INSPECTION
Conditions necessary for the power slide door to open:
Power slide door main switch is in the ON position
(switch free: orange paint on the top of the switch
appears).
Slide door is unlocked (door lock position switch is
in the ON position when the slide do ...
Transponder Chip Malfunction
DTC B2793 Transponder Chip Malfunction
DESCRIPTION
This DTC is output when a malfunction is found in the key during the key code
registration or the key code
is not registered normally. Replace the key when the key code registration is
not performed normally and
this DTC is detected.
IN ...
Installation
1. INSTALL FRONT AXLE ASSEMBLY LH
(a) Install the 2 bolts, nuts and front axle assembly LH
with the 2 bolts and nuts to the shock absorber
assembly front LH.
Torque: 230 N*m (2,350 kgf*cm, 170 ft.*lbf)
NOTICE:
Only when reusing the bolts and nuts, apply
the small amount of engine oil ...
