(ESP) Check

Electronic Stability Program 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.
ESP(R) 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.
Intermittent problem check

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

If symptom in "Customer Questionnaire" is found or reproduced in the vehicle, confirm the symptom is problem or not. (This step should be done 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
, ABS Warning Light Check ABS Warning Light Check
and ESP Warning Light Check ESP(R) 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: ESP(R) Check
to proceed the diagnosis.

When DTC which is recorded at DTC check procedure is not indicated anymore after performing DTC clearance, ESP(R) 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 the vehicle at 40 km/h for more than a minute including left and right turns and check if any trouble symptom (such as ESP(R) warning light and/or ABS warning light) exists.

If the malfunction DTC is confirmed at ignition switch ON, proceed to Step 3.

If the malfunction DTC is not confirmed at ignition switch ON, proceed to Step 6.

Step 3: DTC Check

Recheck DTC referring to DTC Check DTC Check.

Step 4: ESP(R) Check

According to ESP(R) 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: Intermittent Problem Check

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 ESP(R) 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.