5A
A/T System Check
Refer to the following items for the details of each step.
Step Action YES NO
1
icon  Customer complaint analysis
1) Perform customer complaint analysis referring to Step 1. Customer Complaint Analysis .
Was customer complaint analysis performed according to instruction?
Go to Step 2.
Perform customer complaint analysis.
2
icon  Diagnostic Trouble Code (DTC) / Freeze Frame data check, record and clearance
1) Check for DTC referring to Step 2. Diagnostic Trouble Code (DTC) / Freeze Frame Data Check, Record and Clearance .
Is there any DTC(s)?
Print DTC or write it down and clear it by referring to DTC Clearance .
Go to Step 3.
Go to Step 4.
3
icon  Visual inspection
1) Perform visual inspection referring to Step 3 and 4. Visual Inspection .
Is there any faulty condition?
Repair or replace malfunction part.
Go to Step 11.
Go to Step 5.
4
icon  Visual inspection
1) Perform visual inspection referring to Step 3 and 4. Visual Inspection .
Is there any faulty condition?
Repair or replace malfunction part.
Go to Step 11.
Go to Step 8.
5
icon  Trouble symptom confirmation
1) Confirm trouble symptom referring to Step 5. Trouble Symptom Confirmation .
Is trouble symptom identified?
Go to Step 6.
Go to Step 7.
6
icon  Rechecking and record of DTC
1) Recheck for DTC referring to DTC Check .
Is there any DTC(s)?
Go to Step 9.
Go to Step 8.
7
icon  Rechecking and recording of DTC / Freeze Frame data
1) Recheck for DTC referring to DTC Check .
Is there any DTC(s)?
Go to Step 9.
Go to Step 10.
8
icon  Automatic transmission basic check and trouble diagnosis table
1) Check and repair according to Step 8. Automatic Transmission Basic Check and Trouble Diagnosis Table .
Are check and repair complete?
Go to Step 11.
Check and repair malfunction part(s).
Go to Step 11.
9
icon  Troubleshooting for DTC
1) Check and repair according to applicable DTC flow.
Are check and repair complete?
Go to Step 11.
Check and repair malfunction part(s).
Go to Step 11.
10
icon  Check for intermittent problems
1) Check for intermittent problems referring to Step 10. Check for Intermittent Problem .
Is there any faulty condition?
Repair or replace malfunction part(s).
Go to Step 11.
Go to Step 11.
11
icon  Final confirmation test
1) Clear DTC if any.
2) Perform final confirmation test referring to Step 11. Final Confirmation Test .
Is there any problem symptom, DTC or abnormal condition?
Go to Step 6.
End.
Step 1. Customer Complaint Analysis
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.
Customer problem inspection form (Example)
NOTE:
The above form is a standard sample. It should be modified according to conditions characteristic of each market.
Step 2. Diagnostic Trouble Code (DTC) / Freeze Frame Data Check, Record and Clearance
First, check DTC (including pending DTC) referring to DTC Check . If DTC exists, print or write down DTC / Freeze frame data and then clear malfunction DTC(s) by referring to DTC Clearance . Malfunction DTC indicates malfunction in the system but it is not possible to know from it whether the malfunction is occurring now or it occurred in the past and normal condition has been restored. In order to know that, check symptom in question according to Step 5 and then recheck DTC according to Step 6.
Diagnosing a trouble based on the DTC in this step only or failure to clear the DTC in this step may result in an faulty diagnosis, trouble diagnosis of a normal circuit or difficulty in troubleshooting which is otherwise unnecessary.
Step 3 and 4. Visual Inspection
As a preliminary step, perform visual check of the items that support proper function of the engine and automatic transmission referring to Visual Inspection .
Step 5. Trouble Symptom Confirmation
Check trouble symptoms based on information obtained in Step 1. Customer Complaint Analysis and Step 2. Diagnostic Trouble Code (DTC) / Freeze Frame Data Check, Record and Clearance .
Also, reconfirm DTC according to “DTC Confirmation Procedure” described in each DTC flow table.
Step 6 and 7. Rechecking and Record of DTC
Refer to DTC Check for checking procedure.
Step 8. Automatic Transmission Basic Check and Trouble Diagnosis Table
Perform basic check of A/T according to flow table of A/T Basic Check . When the end of the list has been reached, check the parts of the system suspected as a possible cause referring to A/T Symptom Diagnosis and based on symptoms appearing on the vehicle (symptoms obtained through steps of customer complaint analysis, trouble symptom confirmation and/or A/T basic check) and repair or replace faulty parts, if any.
Step 9. Diagnostic Trouble Code Flow Table
Based on the DTC indicated in Step 6 / 7 and referring to DTC Check , locate the cause of the trouble, namely in a sensor, switch, wire harness, connector, actuator, TCM or other part and repair or replace faulty parts.
Step 10. Check for Intermittent Problem
Check parts where an intermittent trouble is easy to occur (e.g. wire harness, connector, etc.), referring to Intermittent and Poor Connection Inspection and related circuit of DTC recorded in Step 2.
Step 11. Final Confirmation Test
Confirm that the problem symptom has gone and the vehicle is free from any abnormal conditions. If what has been repaired is related to the malfunction DTC, clear the DTC once and check to ensure that no malfunction DTC is indicated.