| Component Location |
| E/R Junction Block |

| Circuit (E/R Junction Block) |

| PCB Block |

| Circuit (PCB Block) |

Component Location[Engine Room]1. Engine room junction block[Interior Relay]1. Smart junction block (SJB)2. ICM relay block
Inspection1.Disconnect the negative (-) battery terminal.2.Pull out the relay from the engine compartment relay block.Power Relay (Type A) Check for continuity between the terminals.
DescriptionThe PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of the 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 hybrid engine.
Replacement1.Remove the battery (-) terminal.2.Remove the engine room under cover.(Refer to Engine Mechanical System - "Engine Room Under Cover")3.Remove the heater hose (A) and AEWP hose (B).4.Disconnect the lock pin to remove the heater hose pump connector (A).