B2475
DTC B2475: VIN Not ProgrammedCAUTION:
- If diagnostic trouble code B2475 is set, be sure to diagnose the CAN bus line.
- When replacing the module, always check that the communication circuit is normal.
TROUBLE JUDGMENT
With the ignition switch at the "ON" position, if the VIN is not written to the hands free module, diagnostic trouble code B2475 is stored.
TROUBLESHOOTING HINTS
- The CAN bus line may be defective
- The hands free module may be defective
- The ECM 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, diagnose the CAN bus line.
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.
1. Connect scan tool MB991958. Refer to "How to connect the Scan Tool (M.U.T.-III)." How to Connect the Scan Tool (M.U.T.-III)
2. Turn the ignition switch to the "ON" position.
3. Diagnose the CAN bus line.
4. Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the CAN bus line found to be normal?
YES : Go to Step 2.
NO : Repair the CAN bus line.
STEP 2. Using scan tool MB991958, read the ETACS-ECU diagnostic trouble code.
Check if the diagnostic trouble code relating to the coding error is set to the ECM.
Q: Is the DTC set?
YES : Troubleshoot the ECM (Refer to - Troubleshooting.), Diagnostic Trouble Code Descriptions and then go to Step 3.
NO : Go to Step 3.
STEP 3. Recheck for diagnostic trouble code.
Check again if the DTC is set to the hands free module
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?
YES : Replace the hands free module.
NO : The trouble can be an intermittent malfunction.