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RV METER TSB Revision CHASSIS ELECTRICAL 54A-277 TECHNICAL DESCRIPTION (COMMENT) . TROUBLESHOOTING HINTS • Malfunction of the RV meter • Damaged harness wires and connectors . DIAGNOSIS Required Special Tools: • MB991223: Harness Set • MB991958: Scan Tool (MUT-III Sub Assembly) • MB991824: Vehicle Communication Interface (V.C.I.) • MB991827: MUT-III USB Cable • MB991911: MUT-III Main Harness B STEP 1. Check the communication and connection of the "LOCK" (OFF) position. Then while keeping the switch on (2) When the adjusting switch is continuously pressed for more than five seconds, the reception sound (pip sound) is heard (3) Check the communication and connection Q: Which of the following M-BUS is indicated? " E1 " (Communication error) : Go to Step 2. |