CODE No. C2331 Yaw rate signal error

caution

Before replacing the ECU, ensure that the power supply circuit, the earth circuit and the communication circuit are normal.

OPERATION

The BSW-ECU (master) receives G and yaw rate sensor signal from the ASC-ECU via the gateway-ECU through the CAN bus lines.

CHECK CONDITION

Ignition switch is in the ON position.

DIAGNOSTIC FUNCTION AND JUDGEMENT CRITERIA

When the BSW-ECU (master) receives an invalid G and yaw rate sensor signal from the ASC-ECU, the ECU will set diagnosis code No. C2331.

PROBABLE CAUSES

The ASC system fails
Malfunction of BSW-ECU (master)

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III other system diagnosis code

Check if the diagnosis code is set in the ASC-ECU.

Q. Is the diagnosis code set?

Diagnose the ASC-ECU (Refer to GROUP 35C - Troubleshooting - Diagnosis Code Chart).

Go to Step 2.

STEP 2. Check whether the diagnosis code is set again.

Check again if the diagnosis code is set in the BSW-ECU (master).

(1)Erase the diagnosis code.

(2)Turn the engine switch from the LOCK (OFF) position to the ON position.

(3)Check if the diagnosis code is set.

Q. Is the diagnosis code set?

Replace the BSW-ECU (master).

Intermittent malfunction is suspected (Refer to GROUP 00 - How to Use Troubleshooting/Inspection Service Points - How to cope with Intermittent Malfunction).