• Battery voltage : 13V or above
• Engine : Running
• Ambient temperature and coolant temperature
1.Entering
(1)Set the mode to FLOOR.
(2)Set the temperature to MAX HOT.
(3)Turn off the blower switch.
(4)Press the intake (recirculation) button 5 times or more.
2.Forced operation
(1)Non-A/C : The intake button indicator will blink with an interval of 0.5 second for 30 seconds.With A/C : The intake and A/C button indicator will blink with an interval of 0.5 second for 30 seconds.
(2)The PTC2 and PTC3 will operate by turning on the blower switch.
– PTC2 and PTC3 will operate with an interval of 3 seconds.
– PTC2 and PTC3 will trun off simultaneously when the blower switch is turned off.
– Only PTC2 and PTC3 will be forced operated.
3.Cancellation
(1)Select A/C or intake (recirculation) switch.
(2)The test cancels automatically after 30 seconds.
(3)Turn the ignition switch off.
1.Run the engine.
2.Check the current on the wiring with a clamp multi tester.
Pattern | Current (A) |
PTC 1 ON | 0.1 ~ 49 |
PTC 2 ON | 0.1 ~ 49 |
Total | 0.1 ~ 100 |
3.If the current is not within specification, inspect the related wiring.
1.Turn the ignition switch OFF.
2.Disconnect the PTC heater connector.
3.Measure the resistance between terminal 1, 2 of PTC heater and ground line.
Resistance : 0.3 - 1.5Ω
1)PTC 1
2)PTC 2
4.If the measured resistance is not within specification, replace the PTC heater with a new one.
1.Disconnect the negative (-) battery terminal.
2.Remove the cowl cross bar assembly.(Refer to Body (Interior and Exterior) - "Cowl Cross Bar Assembly")
3.Loosen the mounting screw, remove the driver's shower duct (A).
4.Disconnect the PM sesnor connector (A) and hose (B).
5.Disconnect the PTC heater connector (A) and remove the PTC heater (B).
6.Install in the reverse order of removal.
• Make sure the connector is connected properly.
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