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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (SBW Control Unit Diagnosis (PHEV) (2 Of 2)) >> DTC U0121-83: Lost Communication With Anti-Lock Brake System (ABS) Control Module >> 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.
G14941056Courtesy of KIA MOTORS AMERICA, INC.
G14941057Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "OFF".
  2. Disconnect the auxiliary battery (-) terminal.
  3. Disconnect the electrical connector(s) from the concerned component.
IEB connector 4 (C-CAN high) IEB connector 5 (C-CAN low) Approx. 60Ω
SCU connector 5 (P-CAN high) SCU connector 6 (P-CAN low) Approx. 60Ω
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
IEB connector 1, 1, 2 (Memory power) Chassis ground - B+
IEB connector 6 (ON/START Input) Chassis ground - B+
  1. Ignition "OFF".
  2. Disconnect the auxiliary battery (-) terminal.
  3. Disconnect the electrical connector(s) from the concerned component.
IEB connector 14, 46 (ground) Chassis ground - Approx. below 1Ω
  1. Ignition "ON".
  2. Connect VMI to KDS and launch the oscilloscope.
SCU connector 5 (P-CAN high) Chassis ground - Fig.1
SCU connector 6 (P-CAN low) Chassis ground -
  1. Ignition "ON".
  2. Connect VMI to KDS and launch the oscilloscope.
IEB connector 4 (C-CAN high) Chassis ground - Fig.2
IEB connector 5 (C-CAN low) Chassis ground -
G14941058Courtesy of KIA MOTORS AMERICA, INC.
G14941059Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good 

If a module is replaced, perform the relevant "Vehicle S/W Management" procedure.