Description for Each Step

Record details of the problem (failure, complaint) and how it occurred as described by the customer. For this purpose, use of such an inspection form will facilitate collecting information to the point required for proper analysis and diagnosis.

Fig 1: Customer Problem Inspection Form (Example)

Courtesy of SUZUKI OF AMERICA CORP.

First, check DTC, referring to DTC CHECK  . If DTC is indicated, record DTC and freeze frame data. After that clear DTC referring to DTC CLEARANCE  . DTC indicates malfunction that occurred in the system but does not indicate whether it exists now or it occurred in the past and the normal condition has been restored now. To check which case applies, check the symptom in question according to Step 5 and recheck DTC according to Step 6, 7. Attempt to diagnose a trouble based on DTC in this step only or failure to clear the DTC (including pending DTC) in this step will lead to incorrect diagnosis, trouble diagnosis of a normal circuit or difficulty in troubleshooting.

Refer to VISUAL INSPECTION  .

Refer to VISUAL INSPECTION  .

Based on information obtained in  Step 1. Customer complaint analysis and  Step 2. DTCs/freeze frame data check , confirm trouble symptoms. Also, reconfirm DTC according to "DTC Confirmation Procedure" described in each DTC flow.

Refer to DTC CHECK  for checking procedure.

Refer to DTC CHECK  for checking procedure.

Perform basic engine check according to the ENGINE BASIC CHECK  first. When the end of the flow table has been reached, check the parts of the system suspected as a possible cause referring to ENGINE SYMPTOM DIAGNOSIS  and based on symptoms appearing on the vehicle (symptoms obtained through steps of customer complaint analysis, trouble symptom confirmation and/or basic engine check) and repair or replace faulty parts, if any.

Based on the DTC indicated in Step 6 or 7 and referring to the applicable DTC diag. flow, locate the cause of the trouble, namely in a sensor, switch, wire harness, connector, actuator, ECM or other part and repair or replace faulty parts.

Check parts where an intermittent trouble is easy to occur (e.g., wire harness, connector, etc.), refer to INTERMITTENT & POOR CONNECTION INSPECTION  and related circuit of DTC recorded in Step 2.

Confirm that the problem symptom has gone and the engine is free from any abnormal conditions. If what has been repaired is related to the DTC, clear the DTC once, perform DTC confirmation procedure and confirm that no malfunction DTC (a normal code) is indicated.