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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 13 (Air Conditioning System Diagnosis (PHEV) (1 Of 2)) >> DTC B1281-11: Humidity Sensor Short (Low) - Auto Defog >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.
G14963569Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
Auto defog sensor connector 2 (power) Chassis ground - Approx. 5V
  1. Ignition "OFF".
  2. Disconnect auxiliary battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
Auto defog sensor connector 6 (ground) Chassis ground - Approx. below 1Ω
Auto defog sensor connector 5 (SDA) A/C control module connector 11 (SDA) Approx. below 1Ω
Auto defog sensor connector 5 (SDA) Chassis ground - ∞ (infinity)Ω
Auto defog sensor connector 4 (SCL) A/C control module connector 12 (SCL) Approx. below 1Ω
Auto defog sensor connector 4 (SCL) Chassis ground - ∞ (infinity)Ω
Auto defog sensor connector 3 (TEMP) A/C control module connector 13 (TEMP) Approx. below 1Ω
Auto defog sensor connector 3 (TEMP) Chassis ground - ∞ (infinity)Ω
  1. Ignition "ON".
  2. Measure the oscilloscope using the VMI.
Auto defog sensor connector 3 (TEMP) Auto defog sensor connector 4 (SCL) Fig.1
Auto defog sensor connector 5 (SDA) Chassis ground -
G14963570Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good