Diagnostic Procedure 22 (Cont'd)
EF & EC-288flowchartHarness connectors F34/E36 and M91/E104 for L.H.D. models; F4/E25 for R.H.D. models. GA16DE engine.
TROUBLE DIAGNOSES
Diagnostic Procedure 22 (Cont'd)
1
(A) - continued from previous page
2
F CHECK VOLTAGE BETWEEN E.C.U. AND GROUND. 1) Check voltage between E.C.U. terminal 48 and ground. Voltage: Battery voltage
N.G.
Check the following. - Harness connectors F34, E36 (L.H.D. models) - Harness connectors M91, E104 (L.H.D. models) - Harness connectors F4, E25 (R.H.D. models) - "BR" fusible link - Harness continuity between E.C.U. and battery. If N.G., repair harness or connectors.
Check the following. - Harness connectors F34, E36 (L.H.D. models) - Harness connectors M91, E104 (L.H.D. models) - Harness connectors F4, E25 (R.H.D. models) - "BR" fusible link - Harness continuity between E.C.U. and battery. If N.G., repair harness or connectors.
O.K.
3
G CHECK GROUND CIRCUIT. 1) Check harness continuity between E.C.U. terminals 39, 48 and engine ground. Continuity should exist.
N.G.
Repair harness or connectors.
O.K.
4
CHECK OUTPUT SIGNAL CIRCUIT. 1) Check harness continuity between E.C.U. terminal 4 and terminal 2. Continuity should exist.
N.G.
same as step 3
O.K.
5
H CHECK INPUT SIGNAL CIRCUIT. 1) Turn ignition switch "ON". 2) Check voltage between E.C.U. terminal 36 and ground. Voltage: Battery voltage
N.G.
Check the following. - Harness connectors F34, E36 (L.H.D. models) - Harness connectors M91, E104 (L.H.D. models) - Harness connectors F4, E25 (R.H.D. models) - Harness continuity between E.C.U. and ignition switch. If N.G., repair harness or connectors.
Check the following. - Harness connectors F34, E36 (L.H.D. models) - Harness connectors M91, E104 (L.H.D. models) - Harness connectors F4, E25 (R.H.D. models) - Harness continuity between E.C.U. and ignition switch. If N.G., repair harness or connectors.
O.K.
6
CHECK COMPONENT (E.C.C.S. relay). Refer to "Electrical Components Inspection". (See page EF & EC-351.)
N.G.
Replace E.C.C.S. relay.
O.K.
Check E.C.U. pin terminals for damage or the connection of E.C.U. harness connector.