Code No.B1702: Reception error of key ID
| caution | Whenever the ECU is replaced,
ensure that the input and output signal circuits are normal. |
OPERATION
TROUBLE JUDGMENT
- Diagnosis code No.B1702 is stored when there are other
ignition keys or anything that interferes with the communication (things that generate radio
waves such as magnets and an air-cleaning device that has a power plug) near the ignition key
that is going to start the engine.
- If the key ID is not sent to the ETACS-ECU even when the ignition switch is turned
to the ON position, diagnosis code No.B1702 is stored.
| note | Diagnosis code No.B1702 is always set along with MPI system diagnosis code No.P0513. |
PROBABLE CAUSES
- Interference of the key ID
- Malfunction of the key ring antenna (antenna wire)*
note *: The code No. B1722 will be set if a trouble occurs in the key ring antenna. - Malfunction of ignition key
- Malfunction of ETACS-ECU
DIAGNOSIS PROCEDURE
STEP 1. Check the diagnosis code No.B1722 is set.
Q.
Is the diagnosis code No.B1722 set?
STEP 2. Check the ignition key inserted in the key cylinder for interference.
Q.
Are there other ignition keys or anything that interferes with the communication (things
that generate radio waves such as magnets and an air-cleaning device that has a power plug)
near the ignition key inserted in the key cylinder?
STEP 3. Check with the spare key that has already been registered.
Q.
Is diagnosis code No.B1702 set?
STEP 4. Check whether the diagnosis code is reset.
| (1)Turn the ignition switch to the "LOCK" (OFF) position once, and then turn it to
the ON position again. |
| (2)On completion, check that diagnosis code No.B1702 is not reset. |
Q.
Is diagnosis code No.B1702 set?
