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. |
Use scan tool MB991958 to diagnose the CAN bus lines.
(1) Connect scan tool MB991958 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Diagnose the CAN bus line.
Is the check result satisfactory?
Go to Step 2. Repair the CAN bus line (Refer to GROUP 54C, Diagnosis ).