Honda HR-V: Rear Window Defogger System Description - Control/Function
The Timer Function (Without Climate Control)
The rear window defogger provides the timer control function that is controlled by the HVAC control unit. The timer control is operated by turning the vehicle to the ON mode, then turn on the rear window defogger switch.
The timer operating time varies according to ambient temperature. If the rear window defogger switch is turned on when the timer is active, it toggles between ON and OFF every time the switch is pressed.
Timer operation time is changed under the following conditions:
- When the evaporator temperature sensor detection is lower than 16 ºF (-9 ºC), the timer operation time is unlimited.
- When the evaporator temperature sensor detection is higher than 18 ºF (-8 ºC), the timer operation time is 20 minutes. But when it was lower than 16 ºF (-9 ºC) once, the operation time is changed to unlimited.
- When the evaporator temperature sensor is failure, the timer operation time is 20 minutes.
The Timer Function (With Climate Control)
The rear window defogger provides the timer control function that is controlled by the climate control unit. The timer control is operated by turning the vehicle to the ON mode, then turning on the rear window defogger switch. The timer operating time varies according to ambient temperature. If the rear window defogger switch is turned on when the timer is active, it toggles between ON and OFF every time the switch is pressed.
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REAR WINDOW DEFOGGER SYSTEM DESCRIPTION - OVERVIEW
All vehicles of this model come equipped with the rear window defogger. The rear window defogger switch is integrated into the climate control unit or heater control panel.
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REAR WINDOW DEFOGGER SYSTEM DESCRIPTION - SYSTEM DIAGRAM
With Climate Control
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DTC TROUBLESHOOTING INDEX
CLIMATE CONTROL SYSTEM DTC TROUBLESHOOTING INDEX
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A/C Diagnostic Process
When a customer presents an A/C concern, do the following procedure to
identify the cause of the problem.
1. Confirm the type of concern.
If a customer complains about an A/C performance problem, g
Air Mix Control Motor/Mode Control Motor/Recirculation Control Motor Test
Special Tools Required
Backprobe Set 07SAZ-
001000A
Test
SRS components are located near the mode control motor and the recirculation
control motor. Review the SRS
component locations - Refer to: SR
SEE MORE:
DTC Troubleshooting 81-20: Acceleration Sensor (Inside of Modulator-Control
Unit) Internal Circuit Malfunction
NOTE:
Before you troubleshoot, review the general troubleshooting information.
While doing this troubleshooting, avoid vibration or shaking of the
vehicle.
The yaw rate-acceleration sensor is built into the VSA modulator-control
unit.
Before troubleshooting, check the VSA modulator-control
DTC Troubleshooting
FUEL AND EMISSIONS SYSTEMS DTC TROUBLESHOOTING INDEX (KA/KC)
DTC Troubleshooting Index
NOTE: The above DTCs are indicated when the PGM-FI system is selected with
the HDS.Some automatic
transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are
indicated in the PGM-FI
system, s
