B2226

DTC B2226: AND Error

CAUTION:
- If DTC B2226 is set, be sure to diagnose the CAN bus line.
- When replacing the ECU, always check that the communication circuit is normal. (Check that the voltage is 10 V or more.)

TROUBLE JUDGEMENT
When the CAN box unit receives the signal from the audio visual navigation unit to indicate an abnormality occurred in the audio visual navigation unit, the CAN box unit sets DTC B2226.

TROUBLESHOOTING HINT
- The CAN box unit may be defective
- The audio visual navigation unit 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)." Scan Tool Connecting
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 (Refer to Controller area network, Diagnosis).

STEP 2.Check that the audio visual navigation unit operate.

Check that the audio visual navigation unit work normally.

NOTE: Check that the service data log is not set in the MMCS service mode "Versions Log Information." Service Mode

Q: Is audio visual navigation unit work normally?

YES : Go to Step 3.

NO : Diagnose the audio visual navigation unit (Refer to Trouble symptom chart). Trouble Symptom Chart

STEP 3. Recheck for diagnostic trouble code.

Check again if the DTC is set to the CAN box unit.

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 : Go to Step 4.

NO : The trouble can be an intermittent malfunction (Refer to general (Body and Chassis), How to use Troubleshooting/inspection Service Points How to Cope with Intermittent Malfunction).

STEP 4. Recheck for diagnostic trouble code.

Temporarily replace the audio visual navigation unit, and check if the DTC is set to the CAN box unit.

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 CAN box unit.

NO : Replace the audio visual navigation unit.