STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to CONTENTS OF TROUBLESHOOTING .
HOW TO CONNECT THE SCAN TOOL (M.U.T.-III)
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)
| 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. |
Scheme 49
- Ensure that the ignition switch is at the "LOCK" (OFF) position.
- Start up the personal computer.
- Connect special tool MB991827 to special tool MB991824 and the personal computer.
- Connect special tool MB991910 to special tool MB991824.
- Connect special tool MB991910 to the data link connector.
- Turn the power switch of special tool MB991824 to the "ON" position. NOTE: When special tool MB991824 is energized, special tool MB991824 indicator light will be illuminated in a green color.
- Start the M.U.T.-III system on the personal computer. NOTE: Disconnecting scan tool MB991958 is the reverse of the connecting sequence, making sure that the ignition switch is at the "LOCK" (OFF) position.
HOW TO READ AND ERASE DIAGNOSTIC TROUBLE CODES
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)
| 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. |
Note. If the battery voltage is low, diagnostic trouble codes will not be set. Check the battery if scan tool MB991958 does not display.
- Connect scan tool MB991958 to the data link connector.
- Turn the ignition switch to the "ON" position.
- Select "System select" from the start-up screen.
- Select "From 2006 MY" of "Model Year." When the "Vehicle Information" is displayed, check the contents.
- Select "ETACS" from "System List", and press the "OK" button. NOTE: When the "Loading Option Setup" list is displayed, check the applicable item.
- Select "Diagnostic Trouble Code." to read the DTC.
- If a DTC is set, it is shown.
- Choose "Erase DTCs" to erase the DTC.
DIAGNOSTIC TROUBLE CODE TABLE
| DTC No. | Diagnostic item |
|---|---|
| B2350 | Malfunction of lighting switch |
| B2351 | Malfunction of the wiper/washer switch |
DIAGNOSTIC TROUBLE CODE CHART
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.
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. 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»(ref-592693-S29288047852014011000000) ". Turn the ignition switch to the "ON" position. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) position to "ON" position. Check if the DTC B2350 or B2351 is set. 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 (Refer to «HOW TO COPE WITH INTERMITTENT MALFUNCTION»(ref-592586-S21436341472014011000000) ).
- 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. Replace the wiper/washer switch. Turn the ignition switch to the "ON" position. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) position to "ON" position. Check if DTC is set. 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. Replace the lighting switch (integrated with the column-ECU). Turn the ignition switch to the "ON" position. Erase the DTC. Turn the ignition switch from "LOCK" (OFF) position to "ON" position. Check if DTC is set. Turn the ignition switch to the "LOCK" (OFF) position. Q: Is the DTC set? YES: Replace the ETACS-ECU. NO: The procedure is complete.
