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Diagnostic Procedure 32 (Cont'd) — FUEL PUMP

EF & EC-157flowchart

TROUBLE DIAGNOSES

Diagnostic Procedure 32 (Cont'd)

Fuel pump diagnostic procedure (continued)

1
(A) — continued from previous page
2
E — CHECK COMPONENT (Fuel pump relay). 1) Reconnect fuel pump relay, fuel pump harness connector and E.C.U. harness connector. 2) Turn ignition switch "ON". 3) Perform "FUEL PUMP CIRCUIT" in "FUNCTION TEST" mode with CONSULT. OR 3) Turn fuel pump relay "ON" and "OFF" in "ACTIVE TEST" mode with CONSULT and check operating sound. OR Refer to "Electrical Components Inspection". (See page EF&EC 171 - 180)
N.G.
Replace fuel pump relay.
O.K.
3
CHECK COMPONENT (Fuel pump). Refer to "Electrical Components Inspection". (See page EF&EC 171 - 180)
N.G.
Replace fuel pump.
O.K.
4
Check E.C.U. pin terminals for damage or poor connection of E.C.U. harness connector.

See also

EF & EC-171 · EF & EC-180

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