Diagnostic Procedure 35 (Cont'd)
EF & EC-329flowchartOutput signal circuit harness-connector checks differ between L.H.D. models (connectors E33/M37 and M11/E106) and R.H.D. models (connectors F6/E15).
Diagnostic Procedure 35 (Cont'd)
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A (continued from EF & EC-328)
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[C] CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Disconnect radiator fan motor-1 harness connector and radiator fan motor-2 harness connector. 3) Check harness continuity between terminal (a) and terminal (3), terminal (b) and body ground. Continuity should exist.
N.G.
Repair harness or connectors.
O.K.
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[D] 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 (E33), (M37) (L.H.D. models) - Harness connectors (M11), (E106) (L.H.D. models) - Harness connectors (F6), (E15) (R.H.D. models) - Harness continuity between E.C.U. and radiator fan relay-1 If N.G., repair harness or connectors.
Check the following. - Harness connectors (E33), (M37) (L.H.D. models) - Harness connectors (M11), (E106) (L.H.D. models) - Harness connectors (F6), (E15) (R.H.D. models) - Harness continuity between E.C.U. and radiator fan relay-1 If N.G., repair harness or connectors.
O.K.
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[E] CHECK COMPONENT (Radiator fan relay-1). Refer to "Electrical Components Inspection". (See page EF & EC-351.)
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-351.)
N.G.
Replace radiator fan motors.
O.K.
Check E.C.U. pin terminals for damage or the connection of E.C.U. harness connector.