Initial Inspection and Diagnostic Overview

TROUBLESHOOTING

Perform Troubleshooting In Accordance With The Procedures.

[1] CUSTOMER PROBLEM ANALYSIS
Using the customer problem analysis check sheet for reference, ask the customer in as much detail as possible about the problem.

[2] CHECK AND CLEAR DIAGNOSTIC TROUBLE CODES (PRECHECK)
First check the diagnostic trouble code if there are any trouble codes stored in memory. If there are trouble codes, make a note of them, then clear them and proceed to "[3] Problem Symptom Confirmation".

[3] PROBLEM SYMPTOM CONFIRMATION, [4] SYMPTOM SIMULATION
Confirm the problem symptoms. If the problem does not reappear, be sure to simulate the problem by mainly checking the circuits indicated by the diagnostic trouble code in step [2], using "Problem Simulation Method".

[5] DIAGNOSTIC TROUBLE CODE CHECK
Check the diagnostic trouble codes. Check if there is abnormality in the sensors or the wire harness. If the malfunction code is output, proceed to "[6] Diagnostic trouble Code Chart". If the normal code is output, proceed to "[7] Matrix Chart of Trouble Symptoms".
Be sure to proceed to "[6] Diagnostic trouble Code Chart" after [2] and [3].
If troubleshooting is attempted after only the first malfunction code in the memory is output, errors could be made in the diagnosis.

[6] DIAGNOSTIC TROUBLE CODE CHART
If a malfunction code is confirmed in the diagnostic trouble code check, proceed to the check procedure indicated by the matrix chart for each diagnostic trouble code.

[7] MATRIX CHART OF PROBLEM SYMPTOMS
If the normal code is confirmed in the diagnostic trouble code check, perform inspection in accordance with the inspection order in the matrix chart of problem symptoms.

[8] CIRCUIT INSPECTION
Proceed with diagnosis of each circuit in accordance with the inspection order confirmed in [6] and [7]. Judge whether the cause of the problem is in the sensor, actuators, wire harness and connectors or the ECU.

[9] INPUT SIGNAL CHECK (TEST MODE CHECK)
For the steering sensor circuit, LRC switch circuit, etc., judge whether signals are being input correctly to the ECU or not. Instructions for this check are given in the circuit flow chart.

[10] REPAIRS
After the cause of the problem is located, perform repairs by following the inspection and replacement procedures in this manual.

[11] CONFIRMATION TEST
After completing repairs. confirm not only that the malfunction is eliminated, but also conduct a running test, etc., to make sure the entire suspension control system is operating correctly.





FLOW CHART





CUSTOMER PROBLEM ANALYSIS CHECK SHEET