Dtc B2797 Communication Malfunction No. 1
DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
CHECK KEY
CHECK DTC OUTPUT
REPLACE TRANSPONDER KEY AMPLIFIER
CHECK ENGINE START
DTC B2797 Communication Malfunction No. 1 |
DESCRIPTION
This DTC is output 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
| - Key
- Transponder key amplifier
- Transponder key ECU assembly
|
WIRING DIAGRAM
INSPECTION PROCEDURE
- NOTICE:
- If the transponder key ECU assembly is replaced, register the key and ECU communication ID (COROLLA_ZRE142 RM00000120Y02CX.html).
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:
Result
| Proceed to
|
Key is not near other keys and key ring is not in contact with key grip.
| A
|
Key is near other keys and/or key ring is in contact with key grip.
| B
|
Separate the keys from each other, or remove the key ring.
Clear the DTCs (COROLLA_ZRE142 RM000001GV807PX.html).
Insert a key into the ignition key cylinder and remove the key. Repeat for all the other keys of the vehicle.
- OK:
- No code is output.
| OK |
|
|
|
| END (KEYS ARE POSITIONED TOO CLOSE TO EACH OTHER) |
|
| 3.REPLACE TRANSPONDER KEY AMPLIFIER |
Replace the transponder key amplifier (COROLLA_ZRE142 RM000003G0L004X.html).
Check that the engine starts.
- OK:
- The engine starts.
| OK |
|
|
|
| END (TRANSPONDER KEY AMPLIFIER IS DEFECTIVE) |
|
