freightliner Workshop Repair Guides

Freightliner Sprinter 3500 Workshop Service and Repair Manuals

Engine Control Module|Diagrams|Connector Views|Page 92 > < Engine Control Module|Diagrams|Connector Views|Page 90
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Test 12 - 15

SYMPTOM

CHECKING THE POWER AND GROUNDS

POSSIBLE CAUSES

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Checking the engine control relay system

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EC relay output circuit

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ECM ground circuit(s) Open

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ECM output shorted - fuse 16

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Engine control module

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Engine control Relay

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Engine control Relay B+ Supply

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Engine control relay control circuit open

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Engine control relay control circuit short to voltage

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Engine control relay output circuit(s) open

Engine Control Module|Diagrams|Connector Views|Page 92 > < Engine Control Module|Diagrams|Connector Views|Page 90