Matrix FWD L4-1.8L (2ZR-FE) (2010)
2. MAKE A NOTE OF DTC DISPLAYED AND THEN CLEAR MEMORY
NEXT -- Continue to next step.
3. SYMPTOM CONFIRMATION
Result:
B -- GO TO STEP 5
A -- Continue to next step.
4. SIMULATION TEST USING SYMPTOM SIMULATION METHODS
NEXT -- Continue to next step.
5. DTC CHECK
Result:
B -- TROUBLESHOOTING OF PROBLEM INDICATED BY DTC
A -- Continue to next step.
6. SYMPTOM CONFIRMATION
Result:
If a DTC was displayed in the initial DTC check, the problem may have occurred in a wire harness or connector in that circuit in
the past. Check the wire harness and connectors.
B -- END
A -- TROUBLESHOOTING OF EACH PROBLEM SYMPTOM
The problem still occurs in a place other than the diagnostic circuit (the DTC displayed first is either for a past problem or a secondary problem).
4. SYMPTOM SIMULATION
HINT
The most difficult case in troubleshooting is when no problem symptoms occur. In such a case, a thorough problem analysis must be
carried out. A simulation of the same or similar conditions and environment in which the problem occurred in the customer's vehicle
should be carried out. No matter how much skill or experience a technician has, troubleshooting without confirming the problem
symptoms will lead to important repairs being overlooked and mistakes or delays.
For example:
With a problem that only occurs when the engine is cold or as a result of vibration caused by the road during driving, the problem
can never be determined if the symptoms are being checked on a stationary vehicle or a vehicle with a warmed-up engine.
Vibration, heat or water penetration (moisture) is difficult to reproduce. The following symptom simulation tests are effective
substitutes for the conditions and can be applied to a stationary vehicle. Important points in the symptom simulation test: