DTC B2465: Ignition switch signal error

TROUBLE JUDGEMENT

If 5 seconds or more elapses with the ignition switch state and the data from the CAN communication contradicted, the combination meter stores the DTC B2465.

TROUBLESHOOTING HINTS

The CAN bus line may be defective
The ETACS-ECU may be defective
The combination meter may be defective

DIAGNOSIS

Required Special Tools:

MB991958: Scan Tool (M.U.T.-III Sub Assembly)

MB991824: Vehicles Communication Interface (V.C.I.)
MB991827: M.U.T.-III USB Cable
MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)

STEP 1. Using scan tool MB991958, read the ETACS-ECU diagnostic trouble code

Check if DTC is set to the ETACS-ECU.

(1)

caution

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

Connect scan tool MB991958. Refer to "How to connect the Scan Tool (M.U.T.-III)

."
(2)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(3)Check if DTC is set.
(4)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the DTC set?

Troubleshoot the ETACS-ECU (Refer to

Go to Step 2.

STEP 2. Using scan tool MB991958, diagnose the CAN bus line.

(1)Turn the ignition switch to the "ON" position.

(2)Diagnose the CAN bus line.

(3)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the CAN bus line found to be normal?

	Go to Step 3.

	Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).

STEP 3. Combination meter operation check

Check that the combination meter works normally.

Q. Is the check result normal?

	Go to Step 4.

	Check the power supply circuit of combination meter (Refer to ).

STEP 4. Recheck for diagnostic trouble code.

Check again if the DTC is set to the combination meter.

(1)Erase the DTC.

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

(3)Check if DTC is set.

(4)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the DTC set?

	Replace the combination meter.

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