300SD (140.134) L6-3.5L DSL Turbo (603.971) (1993)
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Diagnostic Impulse Display
1. Connect impulse counter based on the connection diagram.
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U-Batt light diode in display field must light up.
2. Switch Ignition ON.
3. Press START button and hold for between 2 and 4 seconds.
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Display 1 -no fault in system.
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If another number displays remove indicated fault or make needed repairs.
