HOW TO FOLLOW FLOW CHART IN TROUBLE DIAGNOSES
GI-13flowchartInspection Flow Chart Example
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INSPECTION START
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A: CHECK POWER SUPPLY. 1) Turn ignition switch "ON". 2) Check voltage between terminal a and ground. Battery voltage should exist.
N.G.
Check the following items. 1) Harness continuity between crank angle sensor and battery. 2) E.C.C.S. relay-1 (See page EF & EC-106.) 3) "BR" fusible link. 4) Power source for E.C.U. (See page EF & EC-104.) 5) Ignition switch
Check the following items. 1) Harness continuity between crank angle sensor and battery. 2) E.C.C.S. relay-1 (See page EF & EC-106.) 3) "BR" fusible link. 4) Power source for E.C.U. (See page EF & EC-104.) 5) Ignition switch
O.K.
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B: CHECK GROUND CIRCUIT. 1) Turn ignition switch "OFF". 2) Disconnect crank angle sensor harness connector. 3) Check resistance between terminal d and ground. Resistance: Approximately 0 ohm
O.K.
return to step 1
N.G.
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Check the following items. 1) Harness continuity between crank angle sensor and ground. 2) Ground circuit for E.C.U. (See page EF & EC-104.)
NOTICE
The flow chart indicates work procedures required to diagnose problems effectively. Observe the following instructions before diagnosing.
NOTICE
- 1Use the flow chart after locating probable causes of a problem following the "Preliminary Check" or the "Symptom Chart".
- 2After repairs, recheck that the problem has been completely eliminated.
- 3Refer to Component Parts Location and Harness Layout for the Systems described in each section for identification/location of components and harness connectors.
- 4Refer to the Circuit Diagram for Quick Pinpoint Check. If you must perform circuit continuity between harness connectors more detail, such as in case of sub-harness is used, refer to Wiring Diagram and Harness Layout in EL section for identification of harness connectors.
- 5When checking circuit continuity, ignition switch should be "OFF".
- 6Before checking voltage at connectors, check battery voltage.
- 7After accomplishing the Diagnostic Procedures and Electrical Components Inspection, make sure that all harness connectors are reconnected as they were.
See also
EF & EC-106E.C.C. Trouble Diagnoses (Models with catalyzer and E.G.R.) — Diagnostic Procedure 10: E.G.R. & CANISTER CONTROL SOLENOID VALVE (Not self-diagnostic item)EF & EC-104E.C.C. Trouble Diagnoses (Models with catalyzer and E.G.R.) — Diagnostic Procedure 9: START SIGNAL (Not self-diagnostic item)Wiring Diagram and Harness Layout in EL