Precautions In Diagnosing Trouble

Precautions in Diagnosing Trouble
- Do not disconnect connector from HVAC control module, battery cable from battery, or main fuse before reading diagnostic information stored in HVAC control module memory.
- Each DTC has priority. Only DTC having the highest priority is indicated. Therefore, after troubleshooting the malfunction, diagnosis should be performed again to see if any other DTC (s) having the lower priority is detected. Refer to "DTC Table" to see the order of priority.
- Both the A/C indicator lamp and the REC (recirculation. indicator lamp have to be pushed simultaneously to read history DTC. If the A/C indicator lamp and the REC (recirculation. indicator lamp are pushed again simultaneously, current DTC can be read.
- During indication of DTC, rear window defogger switch is OFF. However, rear window defogger switch is ON during indication of history DTC.
- After troubleshooting some trouble, DTC can be stored in HVAC control module memory as history DTC.