How to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd) - WORK FLOW
EF & EC-408flowchartDiagnostic procedure page ranges differ for SR20DE vs SR20DET.
TROUBLE DIAGNOSES
How to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd)
WORK FLOW
Trouble Diagnoses Work Flow
1
CHECK IN
2
LISTEN TO CUSTOMER COMPLAINTS
DIAGNOSTIC WORKSHEET EF & EC-409
3
BASIC INSPECTION
Basic Inspection SR20DE: EF & EC-425 / SR20DET: EF & EC-521
4
Do self-diagnostic results exist?*1
No
return to step 8
Yes
5
INSPECTION ON THE BASIS OF EACH MALFUNCTION
Diagnostic Procedures 22-28 SR20DE: EF & EC-464 - 486 / SR20DET: EF & EC-560 - 582
6
REPAIR/REPLACE
7
FINAL CHECK
Confirm that the trouble is completely fixed by performing Basic Inspection and Test Drive.
O.K.
CHECK OUT
same as step 3
N.G.
8
INSPECTION ON THE BASIS OF EACH SYMPTOM*2
return to step 6
9
Diagnostic Procedures 1-21 SR20DE: EF & EC-428 - 462 / SR20DET: EF & EC-524 - 558
NOTE
*1: If the self-diagnosis cannot be performed, check main power supply and ground circuit. (See Diagnostic Procedure 22.)
*2: If the trouble is not duplicated, see INTERMITTENT PROBLEM SIMULATION (EF & EC-410).
See also
EF & EC-425Trouble Diagnoses — Basic InspectionEF & EC-521Basic InspectionEF & EC-464Diagnostic Procedure 22 — Main Power Supply and Ground Circuit (Not self-diagnostic item)EF & EC-486Diagnostic Procedure 28 - Throttle Sensor (Code No. 43)EF & EC-560Diagnostic Procedure 22 — Main Power Supply and Ground Circuit (Not self-diagnostic item)EF & EC-582Diagnostic Procedure 28 - THROTTLE SENSOR (Code No. 43)EF & EC-428Diagnostic Procedure 1 — High Idling after Warm-upEF & EC-462Diagnostic Procedure 20 — Backfire through the Intake / Diagnostic Procedure 21 — Backfire through the ExhaustEF & EC-524Diagnostic Procedure 1 — High Idling after Warm-upEF & EC-558Diagnostic Procedure 20 — Backfire through the Intake / Diagnostic Procedure 21 — Backfire through the ExhaustEF & EC-410How to Perform Trouble Diagnoses for Quick and Accurate Repair (Cont'd) - INTERMITTENT PROBLEM SIMULATION