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Home >> Kia >> 2021 >> K5 GT >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis - 2.5L (16 Of 16) >> DTC U0424-F1: Invalid Data Received From HVAC Control Module >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

G13830594Courtesy of KIA MOTORS AMERICA, INC.
CAN Communication Line Inspection
Inspection Condition (+) Probe (-) Probe Reference
Connector Terminal Connector Terminal
  1. Ignition "ON".
A/C control module connector 35 (P-CAN high) Chassis ground - Fig.1
A/C control module connector 34 (P-CAN low) Chassis ground -
ICU connector 9 (P-CAN high) Chassis ground - Fig.2
ICU connector 10 (P-CAN low) Chassis ground -
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
A/C control module connector 35 (P-CAN high) A/C control module connector 34 (P-CAN low) Approx. 120Ω
ICU (component side) 9 (P-CAN high) ICU (component side) 10 (P-CAN low) Approx. 120Ω
ECM (component side) 77 (P-CAN high) ECM (component side) 60 (P-CAN low) Approx. 120Ω
A/C control module connector 35 (P-CAN high) ICU connector 9 (P-CAN high) Approx. below 1Ω
A/C control module connector 34 (P-CAN low) ICU connector 10 (P-CAN low) Approx. below 1Ω
ICU connector 9 (P-CAN high) ECM connector 77 (P-CAN high) Approx. below 1Ω
ICU connector 10 (P-CAN low) ECM connector 60 (P-CAN low) Approx. below 1Ω
  1. Ignition "OFF".
  2. Disconnect the battery (-) terminal.
  3. Disconnect the electrical connector(s) of all concerned component to the related CAN system.
A/C control module connector 35 (P-CAN high) Chassis ground - ∞ (infinity)Ω
A/C control module connector 34 (P-CAN low) Chassis ground - ∞ (infinity)Ω
G13830595Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good 

Module Circuit Inspection
Inspection Condition (+) Probe (-) Probe Reference
Connector Terminal Connector Terminal
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
A/C control module connector 12, 23, 24 (power) Chassis ground - B+
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
A/C control module connector 1, 13, 40 (ground) Chassis ground - Approx. below 1Ω

Good 

No Good