Toyota Sienna Service Manual: Dtc check / clear
1. DTC CHECK (SENSOR CHECK)
(a) After the indicator check is completed, the system enters the DTC check mode automatically.
(b) Read the codes displayed on the panel. Refer to the list of codes (See page AC-19) when reading the codes. (Trouble codes are output at the temperature display.)
(c) If the slower display is desired, press the DEF switch and change it to the step operation. Each time the DEF switch is pressed, the display changes by 1 step.
2. CLEARING DTC
(a) To clear diagnostic trouble codes, there are 2 ways.
(1) During sensor check, press the "DEF" switch and "A/C" switch at the same time.
(2) Remove the ECU-B fuse in the engine room junction block for 20 seconds or longer to clear the DTC memory.
Diagnosis system
1. CHECK DLC3
(a) The vehicle's ECM uses the ISO 15765-4 for
communication. The terminal arrangement of the
DLC3 complies with SAE J1962 and matches the
ISO 15765-4 format.
HINT:
Connect the ...
Check mode procedure
1. LIST OF OPERATION METHODS
By operating each of the A/C control switches as shown
in the diagram below, it is possible to enter the diagnosis
check mode.
...
Other materials:
How to proceed with
troubleshooting
HINT:
Use these procedures to troubleshoot the key reminder
warning system.
The intelligent tester should be used in steps 3 and 5.
1 VEHICLE BROUGHT TO WORKSHOP
2 CUSTOMER PROBLEM ANALYSIS
3 INSPECT COMMUNICATION FUNCTION OF MULTIPLEX COMMUNICATION SYSTEM
(BEAN)
Use th ...
No Communication in Immobiliser System
DTC B2796 No Communication in Immobiliser System
DTC B2798 Communication Malfunction No. 2
DESCRIPTION
These codes are stored in the memory when a key that does not have a
transponder chip is inserted or if
communication between the key and transponder key ECU is impossible.
DTC No ...
Light Sensor Circuit Malfunction
DTC B1244 Light Sensor Circuit Malfunction
DESCRIPTION
This DTC is output when failure in the light sensor circuit is detected.
DTC No.
DTC Detection Condition
Trouble Area
B1244
Malfunction of automatic light control sensor
Open or short of a ...
