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CHARGING SYSTEM TSB Revision ENGINE ELECTRICAL 16-7 ON-VEHICLE SERVICE GENERATOR OUTPUT LINE VOLTAGE DROP TEST M1161000900272 Required Special Tool: • MB991824: V.C.I. • MB991827: USB Cable • MB991910: Main Harness A This test determines whether the wiring from the WARNING Battery posts, terminals and related acces- 1. Always be sure to check the following before the test. • Generator installation • Generator drive belt tension (Refer to GROUP 00, General − Maintenance Service − 9. Drive Belt (For the Generator, Water Pump and Power • Fusible link • Abnormal noise from the generator while the engine is running 2. Turn the ignition switch to the "LOCK" (OFF) position. 3. Disconnect the negative battery cable. 4. Disconnect the generator output wire from the generator "B" terminal and connect a DC test − 100 A in series between the "B" terminal and the disconnected 5. Connect a digital-type voltmeter between the generator "B" terminal and the positive battery 6. Reconnect the negative battery cable. MB991958. 8. Leave the hood open. AKX00185 GENERATOR AMMETER VOLTMETER BATTERY + – "B"TERMINAL AB |