Toyota Sienna Service Manual: Antenna Coil Open / Short
DTC B2784 Antenna Coil Open / Short
DESCRIPTION
The transponder key coil is built into the transponder key amplifier and receives a key code signal from the transponder chip in the key. This signal is amplified by the amplifier, and output to the transponder key ECU.
|
DTC No. |
DTC Detection Condition |
Trouble Area |
|
B2784 |
Antenna coil open/short |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
- Connect the intelligent tester (with CAN VIM) to the DLC3.
- Turn the ignition switch on and turn the intelligent tester main switch on.
- Select ANTENNA COIL in the DATA LIST and read the value displayed on the intelligent tester.
Transponder key ECU:
OK: NORMAL (Antenna coil is normal) appears on the screen.
2 CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY -TRANSPONDER KEY AMPLIFIER)
- Disconnect the T6 ECU and I14 switch connectors.
- Measure the resistance according to the value(s) in the table below.
Resistance
3 INSPECT TRANSPONDER KEY ECU ASSEMBLY
- Reconnect the T6 ECU and I14 amplifier connectors.
- Measure the voltage according to the value(s) in the table below.
Voltage
- Measure the resistance according to the value(s) in the table below.
Resistance
REPLACE TRANSPONDER KEY AMPLIFIER
Push Switch / Key Unlock Warning Switch Malfunction
DTC B2780 Push Switch / Key Unlock Warning Switch Malfunction
DESCRIPTION
This DTC will be output if the transponder key ECU does not detect that the
unlock warning switch is on
even when the ign ...
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 t ...
Other materials:
Diagnosis Circuit
DESCRIPTION
DTC output mode is set by connecting terminals TC and CG of the DLC3.
DTCs are displayed by blinking the SRS warning light.
HINT:
When each warning light stays blinking, a ground short in the
wiring of terminal TC of the DLC3 or an
internal ground short in each ECU is ...
DVD Error/ Excess Current/ Tray Insertion / Ejection Error
DTC 44-44 DVD Error
DTC 44-48 Excess Current
DTC 44-50 Tray Insertion / Ejection Error
DESCRIPTION
DTC No.
DTC Detection Condition
Trouble Area
44-44
Operation error in the DVD mechanism
Television display assembly
44-48
Excess current is prese ...
On-vehicle inspection
1. INSPECT FOR FUEL PUMP OPERATION AND FUEL
LEAK
(a) Check fuel pump operation.
(1) Connect the intelligent tester to the DLC3.
(2) Turn the engine switch on (IG) and push the
intelligent tester main switch on.
NOTICE:
Do not start the engine.
(3) Select the following menu it ...
