3.
Select and monitor "Auto defogger humidity sensor" parameter on scantool.
Fig.1) If the DTC related auto defogger sensor is set, Air conditior control Module regards and controls humidity as 0%.
Connect scantool with diagnostic connector.
Warm up the engine to normal temperature after engine starts.
Select and monitor "Auto defogger humidity sensor" parameter on scantool.
Fig.1) If the DTC related auto defogger sensor is set, Air conditior control Module regards and controls humidity as 0%.
Is the defogger sensor normal ?
 | ▶ Go to "Inspection & Repair" procedure. |
 | ▶ This may be a intermittent problem caused by poor contact of component or the Control Unit. ▶ Thoroughly check for looseness, poor connection, bent, corrison, contamination, deformation or damage of connector. ▶ Monitoring with a DVOM on min/max or VMI while wiggling connectors may help find the problem. Any change in voltage indicate a possible problem. ▶ Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure. |
