Diagnostic Procedure 37 (Cont'd)
EF & EC-613flowchartSR20DET. Harness connector checks differ between L.H.D. models (F33/M07, M11/M104) and R.H.D. models (F18/E15).
Radiator Fan Control Diagnostic Procedure 37 (continued)
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(A) — continued from previous page
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CHECK OUTPUT SIGNAL CIRCUIT. 1) Disconnect E.C.U. harness connector. 2) Check harness continuity between E.C.U. terminal (9) and terminal (1). Continuity should exist.
N.G.
Check the following. • Harness connectors (F33), (M07) (L.H.D. models) • Harness connectors (M11), (M104) (L.H.D. models) • Harness connectors (F18), (E15) (R.H.D. models) • Harness continuity between E.C.U. and radiator fan relay If N.G., repair harness or connectors.
Check the following. • Harness connectors (F33), (M07) (L.H.D. models) • Harness connectors (M11), (M104) (L.H.D. models) • Harness connectors (F18), (E15) (R.H.D. models) • Harness continuity between E.C.U. and radiator fan relay If N.G., repair harness or connectors.
O.K.
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CHECK COMPONENT (Radiator fan relay). Refer to "Electrical Components Inspection". (See page EF & EC-635.)
N.G.
Replace radiator fan relay.
O.K.
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CHECK COMPONENTS (Radiator fan motors). 1) Reconnect radiator fan relay, radiator fan motor harness connectors and E.C.U. harness connector. 2) Start engine. 3) Perform "RADIATOR FAN TEST" in "ACTIVE TEST" mode with CONSULT. — OR — Refer to "Electrical Components Inspection". (See page EF & EC-635.)
N.G.
Replace radiator fan motors.
O.K.
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Check E.C.U. pin terminals for damage or the connection of E.C.U. harness connector.