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Home >> Kia >> 2019 >> Niro Plug-In Hybrid EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 294 (Dual Clutch Transmission Diagnosis (HEV) (2 Of 2)) >> DTC U0121-87: 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 2020 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.
G13460746Courtesy of KIA MOTORS AMERICA, INC.
G13460747Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "ON".
TCM connector 44 (high) Chassis ground - Fig.1
TCM connector 45 (low) Chassis ground -
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
TCM 44 (high) TCM 45 (low) Approx. 60Ω
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
ECM connector (component side) 55 (high) ECM connector (component side) 77 (low) Approx. 120Ω
IGPM connector (component side) 2 (high) IGPM connector (component side) 1 (low) Approx. 120Ω
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
IGPM connector 2 (high) Chassis ground - ∞ (infinity)Ω
IGPM connector 1 (low) Chassis ground - ∞ (infinity)Ω
G13460748Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good 

Module Circuit Inspection
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".
IBAU connector 1, 30 (Memory power) Chassis ground - Approx. 12V
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
IBAU connector 5 (ON/Start Input) Chassis ground - Approx. 12V
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
IBAU connector 14, 46 (ground) Chassis ground - Approx. below 1Ω
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
TCM connector 44 (P-CAN high) IBAU connector 19 (P-CAN high) Approx. below 1Ω
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
TCM connector 45 (P-CAN low) IBAU connector 20 (P-CAN low) Approx. below 1Ω

Good 

No Good