Matrix FWD L4-2.4L (2AZ-FE) (2009)
License Plate Lamp: Diagnostic Aids
How To Proceed With Troubleshooting
INTRODUCTION: HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS: HOW TO PROCEED WITH TROUBLESHOOTING
HOW TO PROCEED WITH TROUBLESHOOTING
1. OPERATION FLOW
HINT: Perform troubleshooting in accordance with the procedure below. The following is an outline of basic troubleshooting procedure.
Confirm the troubleshooting procedure for the circuit you are working on before beginning troubleshooting.
1. VEHICLE BROUGHT TO WORKSHOP
NEXT -- Continue to next step.
2. CUSTOMER PROBLEM ANALYSIS
(a) Ask the customer about the conditions and environment when the problem occurred.
NEXT -- Continue to next step.
3. INSPECT BATTERY VOLTAGE
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding.
NEXT -- Continue to next step.
4. SYMPTOM CONFIRMATION AND DTC (AND FREEZE FRAME DATA) CHECK
(a) Visually check the wire harnesses, connectors and fuses for open and short circuits.
(b) Warm up the engine to the normal operating temperature.
(c) Confirm the problem symptoms and conditions, and check for DTCs.
Result:
B -- GO TO STEP 6
A -- Continue to next step.
5. DTC CHART
(a) Check the results obtained in step 4. Then find the output DTC in the DTC chart. Look at the Trouble Area column for a list of potentially
malfunctioning circuits and/or parts.
NEXT -- GO TO STEP 7
6. PROBLEM SYMPTOMS CHART
(a) Check the results obtained in step 4. Then find the problem symptoms in the problem symptoms table. Look at the Suspected Area column
for a list of potentially malfunctioning circuits and/or parts.
NEXT -- Continue to next step.
7. CIRCUIT INSPECTION OR PARTS INSPECTION
(a) Identify the malfunctioning circuit or part.
NEXT -- Continue to next step.
8. ADJUST, REPAIR OR REPLACE
(a) Adjust, repair or replace the malfunctioning circuit or parts.
NEXT -- Continue to next step.
9. CONFIRMATION TEST
(a) After the adjustment, repairs or replacement of components, confirm that the malfunction no longer exists. If the malfunction does not
reoccur, perform a confirmation test under the same conditions and in the same environment as when the malfunction first occurred.
NEXT -- END
2. CUSTOMER PROBLEM ANALYSIS
HINT:
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When troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to
make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the