Other information:
Inspection1.Connect the battery voltage and check the blower motor rotation.2.If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.3.Replace the blower motor if it is proved that there is a problem with it.
Trouble Symptom ChartsTrouble Symptom 1Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly upward or downward"Surging" (repeated alternating acceleration and deceleration) occurs after settingMalfunction of the vehicle speed se