Inspection 1. Turn the ignition switch OFF. 2. Disconnect the intake actuator connector. 3.
Components Connector [A] Pin NO Function Pin NO Function 1 Low 4 Middle Low 2 COMMON 5 Middle High 3 Ground 6 High Connector [B] Pin NO Function Pin NO Function 1 Battery Power 17 IGN2 2 ISG B+ 18 IGN1 3 ILL+ (TAIL) 19 - 4 Sensor REF (+5) 20 - 5 - 21 PTC Relay 1 6 Intake actuator (F/B) 22 - 7 EVAP Sensor (+) 23 MAX Blower ON Signal 8 AMB Sensor (+) 24 - 9 - 25 - 10 - 26 C_CAN High 11 Intake actuator (Fresh Air) 27 C_CAN Low 12 Intake actuator (Recirculated Air) 28 - 13 HTD (Rear defog indicator) 29 ECV+ 14 Rear defog switch 30 ECV(-) 15 Blower ON signal to common 31 Sensor ground 16 ILL- (RHEO) 32 Ground
Description The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core. The PTC heater is an electric heater using a PTC element as an auxiliary heating device that supplements deficiency of interior heat source in highly effective diesel engine.
Diagnosis with Diagnostic tool 1. In the body electrical system, failure can be quickly diagnosed by using the vehicle diagnostic system (Diagnostic tool). The diagnostic system (Diagnostic tool) provides the following information.