The cause of problems (such as abnormal voltage, overheating, short circuits, component failure, etc.) can be checked by connecting the DTC tester and reading DTCs.
Turn the ignition switch off.
Disconnect the A41 heater assembly connector.
Connect connector A of the DTC tester to the vehicle wire harness.
Connect connector B of the DTC tester to the heater assembly connector.
Start the engine.
Read the DTCs.
Press the DTC call button to display 3-digit DTCs.
Clear the DTCs.
Press both memory clear buttons together for more than 2 seconds.
DESCRIPTION OF DTC TESTER
The DTC tester is able to store up to 5 DTCs in memory. If it is full, new data is written and the oldest DTCs are cleared.
|AF||Current malfunction (Blinking in the event of a current malfunction)|
|DIAG||DTC (Example: 064 Flame sensor malfunction)|
|DTC Call Button||Reads the DTCs|
|Memory Clear Button||Clears the DTC memory|
|DTC Memory Call Button (>)||Cycles through the DTC memory (F1 - F5)|
|DTC Memory Call Button (<)||Cycles through the DTC memory (F5 - F1)|