Code No. C2234 FR side sensor signal lost


OPERATION


The clearance warning control unit sets diagnosis code No.C2234 when it does not receive any signal from the front blind spot warning sensor (RH) for at least three seconds.
note
  • If some or all of diagnosis codes C2230 to C2235 are set together with this DTC, the power supply or earth wires for the sensor may be open-circuited.
  • Diagnosis code C2242 will be set instead of this DTC when the sensor power supply circuit is short to power supply or earth.

TROUBLE JUDGEMENT


The condition below is satisfied:

PROBABLE CAUSES



DIAGNOSIS PROCEDURE


STEP 1. Check of short to earth, and open circuit in POUS, SFSR and GOUS line between front blind spot warning sensor (RH) connector and clearance warning control unit connector.


note To check electric continuity, always select a resistance range of a multimeter.

Q. Is the check result normal?

Go to Step 2.

Repair the connector(s) or wiring harness.

STEP 2. Check the front blind spot warning sensor (RH).


Substitute a known good front side sensor.
(1)Substitute a known good front side sensor.
(2)Erase the diagnosis code.
(3)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(4)The diagnosis code representing the substituted sensor should be set, but diagnosis code C2234 should not be set.

Q. Is the check result normal?

Replace the front blind spot warning sensor (RH) (Refer to ).

Go to Step 3.

STEP 3. Check whether the diagnosis code is set again.


Check again if the diagnosis code is set in the clearance warning control unit.
(1)Erase the diagnosis code.
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if diagnosis code is set.

Q. Is the diagnosis code set?

Replace the clearance warning control unit (Refer to ).

The trouble can be an intermittent malfunction (Refer to GROUP 00 - How to use Troubleshooting/inspection Service Points - How to Cope with Intermittent Malfunction ).