Toyota Sienna Service Manual: Absence of Registration Unit/ No Response for Connection Check/ Last Mode
Error/ No Response Against ON / OFF Command/ Mode Status Error/ Slave Reset
DESCRIPTION

HINT:
- *1: Even if no fault is present, this trouble code may be stored
depending on the battery condition or
engine start voltage.
- *2: If the power connector is disconnected after the engine
starts, this code is stored after 180 seconds.
- *3: If the device is reported as not existing during verification,
check the power source circuit and AVCLAN
circuit for the device.
- *4: This code may be stored if the engine is started and the
ignition switch is turned to the START
position again.
NOTICE:
- Before starting troubleshooting, be sure to clear DTCs to erase
codes stored due to the
reasons described in the HINT above. Then, check for DTCs and troubleshoot
according to the
output DTCs.
- The radio receiver is the master unit.
- Be sure to clear and recheck DTCs after the inspection is
completed to confirm that no DTCs
are output.
INSPECTION PROCEDURE
NOTICE:
Be sure to read DESCRIPTION before performing the following procedures
1 CHECK "RADIO RECEIVER COMMUNICATION ERROR" IN FLOW CHART
Refer to the radio receiver communication error
END
DTC 01-21 ROM Error
DTC 01-22 RAM Error
DESCRIPTION
INSPECTION PROCEDURE
HINT:
After the inspection is completed, clear the DTCs.
1 REPLACE RADIO RECEIVER
END ...
DTC 01-D6 No Master
DTC 01-D7 Connection Check Error
DESCRIPTION
HINT:
*1: Even if no fault is present, this trouble code may be stored
depending on the battery condition or
engi ...
Other materials:
Precaution
1. PRECAUTION FOR VEHICLE WITH SRS AIRBAG
AND SEAT BELT PRETENSIONER
Some operations in this section may affect SRS
airbag system. Before performing the corresponding
operations, please read the NOTICE of the SRS
airbag for the proper operations.
COMPONENTS
...
Enter test mode
HINT:
Operation of the tire pressure warning reset switch
can be checked in TEST MODE.
During TEST MODE, the system is not initialized by
pushing the tire pressure warning reset switch. The
circuit of the tire pressure warning reset switch can be
inspected during this mode.
(a) Make ...
Open in One Side of CAN Branch Line
DESCRIPTION
If 2 or more ECUs and/or sensors do not appear on the intelligent tester
"Communication Bus Check"
screen, one side of the CAN branch wire may be open. (One side of the CAN-H
[branch wire] / CAN-L
[branch wire] of the ECU and/or sensor is open.)
Symptom
...