DESCRIPTION
This DTC is stored when an error occurs in communication between the transponder key amplifier and the transponder key ECU assembly.
HINT:
Some noise is found in the communication line.
DTC No. |
DTC Detection Condition |
Trouble Area |
---|---|---|
B2797 |
Keys are positioned too close to each other, or noise occurs in communication line. |
|
CAUTION / NOTICE / HINT
NOTICE:
If the transponder key ECU assembly is replaced, register the key and ECU communication ID (See page ).
PROCEDURE
1. |
CHECK KEY |
(a) Check whether the ignition key being used is near other ignition keys, as shown in the illustration. Also, check whether the key ring is in contact with the key grip. Result:
|
|
B |
GO TO STEP 3 |
|
2. |
CHECK DTC OUTPUT |
(a) Separate the keys from each other or remove the key ring.
(b) Clear the DTCs (See page ).
(c) Insert a key into the ignition key cylinder and remove the key. Repeat for all the other keys of the vehicle.
OK:
No DTC is output.
OK |
END (KEYS WERE POSITIONED TOO CLOSE TO EACH OTHER) |
|
3. |
REPLACE TRANSPONDER KEY AMPLIFIER |
(a) Replace the transponder key amplifier (See page ).
|
4. |
CHECK ENGINE START |
(a) Check that the engine starts.
OK:
The engine starts.
OK |
END (TRANSPONDER KEY AMPLIFIER WAS DEFECTIVE) |
NG |
REPLACE TRANSPONDER KEY ECU ASSEMBLY |
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for the RH side and LH side.
The procedure listed below is for the LH side.
PROCEDURE
1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL
CAUTION:
Wait at least 90 seconds aft ...
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender
Receiver
Signal
Line
ECM
Combination Meter ECU
CRUISE main indicator operation signal
SET indicator operation sig ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
HINT:
Perform "Inspection After Repair" after replacing the cylinder head sub-assembly
(See page ).
PROCEDURE
1. INSTALL SPARK PLUG TUBE
HINT:
When using a new cylinder head, the spark plug tubes must be r ...