B2350

DTC B2350: Malfunction of lighting switch,
DTC B2351: Malfunction of wiper/washer switch

TROUBLE JUDGMENT

The ETACS-ECU receives the signals related to lighting and wiper/washer from the column switch. If the fail information data is included in the signal from column switch, DTC B2350 (malfunction of lighting switch) or B2351 (malfunction of wiper/washer switch) is stored.

TECHNICAL DESCRIPTION (COMMENT)

The column switch or the ETACS-ECU may have a problem.

TROUBLESHOOTING HINTS

- Malfunction of lighting switch (integrated with the column-ECU)
- Malfunction of wiper/washer switch
- The ETACS-ECU may be defective

DIAGNOSIS

Required Special Tools:

- MB991958: Scan Tool (M.U.T.-III Sub Assembly)
- MB991824: Vehicle 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, Check whether the diagnostic trouble code is reset.

Check again if the 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 scan tool Reading and Clearing Diagnostic Trouble Codes".
(2)Turn the ignition switch to the "ON" position.
(3)Erase the DTC.
(4)Turn the ignition switch from "LOCK" (OFF) position to "ON" position.
(5)Check if the DTC B2350 or B2351 is set.
(6)Turn the ignition switch to the "LOCK" (OFF) position.

Q. Is the DTC set?

DTC B2351 is set. : Go to Step 2.

DTC B2350 is set. : Go to Step 3.

No DTC is set. : The trouble can be an intermittent malfunction (How to Cope with Intermittent Malfunction How to Cope With Intermittent Malfunctions).

STEP 2. Using scan tool MB991958, Check whether the diagnostic trouble code is reset.

Check again if the DTC is set to the ETACS-ECU.

(1)Replace the wiper/washer switch.

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

(3)Erase the DTC.

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

(5)Check if DTC is set.

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

Q. Is the DTC set?

YES Go to Step 3.
NO The procedure is complete.
STEP 3. Using scan tool MB991958, Check whether the diagnostic trouble code is reset.

Check again if the DTC is set to the ETACS-ECU.

(1)Replace the lighting switch (integrated with the column-ECU).

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

(3)Erase the DTC.

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

(5)Check if DTC is set.

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

Q. Is the DTC set?

YES Replace the ETACS-ECU.
NO The procedure is complete.