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:
Illumination Circuit
DESCRIPTION
Power is supplied to the radio and navigation assembly and steering pad
switch illumination when the
light control switch is in the TAIL or HEAD position.
WIRING DIAGRAM
INSPECTION PROCEDURE
NOTICE:
The vehicle is equipped with an SRS (Supplemental Restraint System) such as t ...
Installation
1. INSTALL PARKING BRAKE CABLE ASSEMBLY NO.3
(a) Install the parking brake cable LH guide to the
parking brake cable assembly No. 3.
(b) Connect the parking brake cable No. 3 to the
parking brake cable equalizer.
(c) Install the parking brake cable No. 3 with the 3 bolts
and button.
T ...
Vehicle Speed Signal Circuit between Stereo Component Amplifier and
Combination Meter
DESCRIPTION
This circuit is necessary for the ASL (Auto Sound Leveliser) built into the
stereo component amplifier.
Speed signals are received from the combination meter and used for the ASL.
The ASL function automatically adjusts the sound data in order to enable hearing
the clear audio ...
