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
ROM Error/ RAM Error
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 ...
No Master/ Connection Check Error
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:
MIL Circuit
DESCRIPTION
The MIL (Malfunction Indicator Lamp) is used to indicate vehicle malfunctions
detected by the ECM.
When the ignition switch is turned to the ON position, power is supplied to the
MIL circuit, and the ECM
provides the circuit ground which illuminates the MIL.
The MIL operation ...
ECU Power Source Circuit
DESCRIPTION
This is the power source for the tire pressure warning ECU.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
When replacing the tire pressure warning ECU, read the transmitter IDs
stored in the old ECU
using the intelligent tester and write them down before removal.
It is neces ...
Diagnosis system
1. CHECK DLC3
The vehicle's ECU uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
...
