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 ignition switch is on (Under the normal conditions, the unlock warning switch is on when the ignition switch is on).
DTC No. |
DTC Detection Condition |
Trouble Area |
B2780 |
Unlock warning switch on is not detected when ignition switch is on |
|
WIRING DIAGRAM
INSPECTION PROCEDURE
1 READ VALUE OF INTELLIGENT TESTER
Transponder key ECU:
OK: ON (Key is in ignition key cylinder) appears on the screen
2 INSPECT UNLOCK WARNING SWITCH ASSEMBLY
Resistance
3 CHECK HARNESS AND CONNECTOR (TRANSPONDER KEY ECU ASSEMBLY - UNLOCK WARNING SW ASSEMBLY)
Resistance
4 CHECK HARNESS AND CONNECTOR (UNLOCK WARNING SW ASSEMBLY - BODY GROUND)
Resistance
REPLACE TRANSPONDER KEY ECU ASSEMBLY
Erasing the entire HomeLink® memory (all three programs)
Press and hold down the 2 outside
buttons for 10 seconds until
the indicator light flashes.
If you sell your vehicle, be sure to
erase the programs stored in the
HomeLink® memory.
Before programming
Install a new battery in the transmitter.
The battery side of the transmitter must ...
Removal
HINT:
Remove the RH by the same procedure as the LH side.
1. REMOVE REAR WHEEL
2. SEPARATE SKID CONTROL SENSOR WIRE
(a) Disconnect the connector from the skid control
sensor.
3. REMOVE REAR BRAKE DRUM SUB-ASSEMBLY (for
Drum Type)
(a) Place matchmarks on the rear brake drum subassembly
a ...
Monitor result information
If you use a generic scan tool, multiply the test value by
the scaling value listed below.
...