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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (HEV Motor Control System Diagnosis (PHEV) (2 Of 2)) >> DTC U1003-00: Lost Communication With TCM (H-CAN) >> 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.
G14962711Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "OFF".
  2. Disconnect auxiliary battery (-) cable
  3. Disconnect the electrical connector(s) from the concerned component.
ECM (component side) 80 (H-CAN high) ECM (component side) 81 (H-CAN low) Approx. 120Ω
BMU (component side) 16 (H-CAN high) BMU (component side) 15 (H-CAN low) Approx. 120Ω
TCM connector 44 (H-CAN high) TCM connector 43 (H-CAN low) Approx. 60Ω
  1. Disconnect the electrical connector(s) from the concerned component.
  2. Ignition "ON".
TCM connector 67, 68 (Memory power) Chassis ground - B+
TCM connector 16 (ON/START Input) Chassis ground - B+
  1. Ignition "OFF".
  2. Disconnect auxiliary battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
TCM connector 71, 73, 74 (ground) Chassis ground - Approx. below 1Ω
TCM connector 44 (H-CAN high) Chassis ground - ∞ (infinity)Ω
TCM connector 43 (H-CAN low) Chassis ground - ∞ (infinity)Ω
  1. Ignition "ON".
  2. Connect the VMI to KDS.
TCM connector 44 (H-CAN high) Chassis ground - Fig.1
TCM connector 43 (H-CAN low) Chassis ground -
G14962712Courtesy of KIA MOTORS AMERICA, INC.

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