Diagnosis System

1. The defogger system data can be read from the Data Link Connector 3 (DLC3) of the vehicle. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.

1. Check the DLC3 (See HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS ).

Standard Voltage: 11 to 14 V 

If the voltage is below 11V, recharge or replace the battery before proceeding.