P1009

P1009-HUMIDITY SENSOR LIN BUS ASSEMBLY INTERNAL





For a complete wiring diagram, refer to the Wiring Information Electrical Diagrams.

- When Monitored:
Continuously when the ignition is on.

Battery voltage between 10 and 16 volts.

IOD fuse installed.

Front Control Module (FCM) is configured correctly.

- Set Condition:
Internal Humidity/Temperature Sensor failure.





TEST FOR INTERMITTENT CONDITION

WARNING: On vehicles equipped with the high voltage system, you must thoroughly read and follow all High Voltage Safety procedures. In addition, before performing any diagnostic or service procedure near a high voltage component, you must perform the High Voltage Power Down. Failure to follow these instructions may result in possible serious or fatal injury Service Precautions

1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Wait 30 seconds.
4. With the scan tool, read DTCs.

Does the scan tool display this DTC as active?

Yes

- Replace the Humidity/Temperature Sensor.
- Perform the HGM VERIFICATION TEST. Hybrid Gateway Module (HGM) Verification Test

No

- The condition that caused this code to set is not present at this time. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals.
- Go to and perform the Stored Lost Communication DTC diagnostic test procedure. Stored Lost Communication DTCs