DTC U2300 (Flash Code 181) Immobilizer Ignition Line Off (RZ4E-TC)

1. DTC U2300 description

When the ignition switch is turned ON, the wireless access module begins the transponder key authentication via the antenna coil in the steering lock section. The ECM sends a request signal to the wireless access module. The ECM receives a response signal from the wireless access module. If the wireless access module cannot detect the ignition switch ON signal, the transponder key authentication cannot be possible. If the ECM receives a response signal which cannot be detected from the wireless access module, the DTC is set.

2. Condition for setting DTC U2300

Condition for setting the DTC

The ECM detects that the key authentication cannot be done because the wireless access module cannot detect the ignition switch ON signal.

3. Action taken when DTC U2300 sets

Euro4: The ECM does not illuminate the MIL or SVS indicator light. Refer to Action taken when DTC sets - Type D (Euro4).
Except Euro4: The ECM does not illuminate the check engine warning light. Refer to Action taken when DTC sets - Type D (Except Euro4).

Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".

The ECM inhibits engine startup.

4. Condition for clearing DTC U2300

Refer to Condition for clearing the DTC - Type D.

Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".