Diagnostic Manual, Engines, Volume 4
Hydraulic Test Program - Test (Fuel Pump Test)
Preparation for Test:
1. Review 11 , 21 , 22 , 23 , 24 , 31 , 33 ,
2. Review section O,
3. Connect socket box to engine control module (N3/10).
When disconnecting the connectors on the engine control module remove center connector (D) first, when reconnecting connectors install center connector (D) last. |
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Test scope |
Test connection
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Test condition |
Nominal value |
Possible cause/remedy 1) |
1.0 |
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Fuel pump
Delivery capacity |
3
(3A) |
N3/10
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21
(29C) |
Disconnect fuel return hose from fuel line and place end in measuring glass.
Ignition: ON
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1 liter of fuel within 35 seconds.
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Check fuel lines for restrictions (kinks and dents).
Replace fuel filter or diaphragm pressure regulator,
2.0 |
2.0 |
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Fuel pumps
Current draw
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Models 202/208/210:
Remove FP relay module (K27), connect multimeter on sockets 2 and 8.
Model 163:
Remove fuel pump relay (F1k3), connect multimeter on sockets 30 and 87.
Ignition: ON
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4 - 9 A |
Fuel pump |
1) Observe Preparation for Test, see 33 . |
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