Kia Cee'd: Troubleshooting / Photo Sensor Repair procedures

Inspection
1.
Turn the ignition switch ON.
2.
Connect the GDS.
3.
Emit intensive light toward the photo sensor using a lamp, and check the output voltage change.
4.
The voltage will rise with higher intensive light and reduce with lower intensive light.

 
1. Auto Light Signal
2. Auto Light Ground
3. Photo Signal (RH)
4. LED Power (Battery)
5. LED Ground (To BCM)
6. Photo Signal (LH)
7. Photo Power (SW)
8. Auto Light Power (5V)

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
With a flat-head screwdriver, remove the photo sensor (A) from the center of the defrost nozzle after disconnecting the connector (B).

3.
Install in the reverse order of removal.
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