ABS Check
ABS Check
Refer to the following items for the details of each step.
1.
Malfunction analysis
Perform Customer complaint analysis.
Perform Problem symptom confirmation.
Perform DTC check, record and clearance
and recheck DTC.
Is there any malfunction DTC?
YES -
Go to Step 4.
NO -
Go to Step 2.
2.
Driving test
Perform Step 2: Driving Test.
Is trouble symptom identified?
YES -
Go to Step 3.
NO -
Go to Step 6.
3.
DTC check
Perform DTC Check DTC Check.
Is it malfunction code?
YES -
Go to Step 4.
NO -
Go to Step 5.
4.
ABS check
Inspect and repair referring to applicable DTC flow.
Does trouble recur?
YES -
Go to Step 5.
NO -
Go to Step 7.
5.
Brakes diagnosis
Inspect and repair referring to Symptom Related Diagnostic Procedures Brakes Symptom Diagnosis.
Does trouble recur?
YES -
Go to Step 3.
NO -
Go to Step 7.
6.
Check for intermittent problem
Check intermittent troubles referring to Intermittent and Poor Connection Inspection Intermittent and Poor Connection Inspection
and related circuit of trouble code recorded in Step 1.
Does trouble recur?
YES -
Go to Step 4.
NO -
Go to Step 7.
7.
Final confirmation test
Perform Step 7: Final Confirmation Test.
Does trouble recur?
YES -
Go to Step 3.
NO -
End.
Step 1: Malfunction Analysis
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 a questionnaire form as shown in the following will facilitate collecting information to the point required for proper analysis and diagnosis.
Customer questionnaire (Example)
Problem symptom confirmation
Check if what the customer claimed in "Customer Questionnaire" is actually found in the vehicle and if that symptom is found, whether it is identified as a failure. (This step should be shared with the customer if possible.) Check warning lights related to brake system referring to EBD Warning Light (Brake Warning Light) Check EBD Warning Light (Brake Warning Light) Check
and ABS Warning Light Check ABS Warning Light Check.
DTC check, record and clearance
Perform DTC Check DTC Check
procedure, record it and then clear it referring to DTC Clearance DTC Clearance.
Recheck DTC referring to DTC Check DTC Check.
When DTC which is recorded at DTC check procedure is detected again after performing DTC clearance, go to Step 4: ABS Check
to proceed the diagnosis.
When DTC which is recorded at DTC check procedure is not indicated anymore after performing DTC clearance, ABS control module does not perform the system diagnosis, or temporary abnormality may occur, therefore go to Step 2: Driving Test
to proceed the diagnosis.
Step 2: Driving Test
Test drive the vehicle at 40 km/h (25 MPH) for more than a minute and check if any trouble symptom (such as abnormal lighting of ABS warning light) exists.
If the malfunction DTC is confirmed again at ignition switch ON, driving test as described is not necessary. Proceed to Step 3.
Step 3: DTC Check
Recheck DTC referring to DTC Check DTC Check.
Step 4: ABS Check
According to ABS Check for the DTC confirmation in Step 3, locate the cause of the trouble, namely in a sensor, switch, wire harness, connector, actuator assembly or other part and repair or replace faulty parts.
Step 5: Brakes Diagnosis
Check the parts or system suspected as a possible cause referring to Symptom Related Diagnostic Procedures Brakes Symptom Diagnosis
and based on symptoms appearing on the vehicle (symptom obtained through Steps 1 and 2 and repair or replace faulty parts, if any).
Step 6: 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 Intermittent and Poor Connection Inspection
and related circuit of trouble code recorded in Step 1 to 3.
Step 7: Final Confirmation Test
Confirm that the problem symptom has gone and the ABS is free from any abnormal conditions. If what has been repaired is related to the malfunction DTC, clear the DTC once referring to DTC Clearance DTC Clearance
and perform test driving and confirm that no DTC is indicated.