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:
Installation
1. INSTALL REAR AXLE HUB & BEARING ASSEMBLY LH
(a) Install the hub & Bearing assembly LH with the 4
bolts.
Torque: 56 N*m (571 kgf*cm, 41 ft.*lbf)
2. INSPECT BEARING BACKLASH (See page AH-16)
3. INSPECT AXLE HUB DEVIATION (See page AH-16)
4. CONNECT SKID CONTROL SENSOR WIRE
(a) Co ...
Rear door lock
INSPECTION
1. INSPECT REAR DOOR LOCK ACTUATOR ASSEMBLY LH
Apply battery voltage to the door lock and check
operation of the motor.
OK
HINT:
If the result is not as specified, replace the door lock
assembly.
Measure the resistance according to the value(s) in
the ...
Disassembly
1. Remove park/neutral position switch assembly
(A) remove the nut, washer and control shaft lever.
(B) using a screwdriver, unstake the nut stopper, and
remove the lock nut and nut stopper.
(c) Remove the 2 bolts and pull out the park/neutral
position switch.
2. REMOVE BREATHER PLUG H ...
