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Home >> Kia >> 2020 >> Soul EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 89 (Double Clutch Transmission Diagnosis - 1.6L (4 Of 4)) >> 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 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.
G13291141Courtesy of KIA MOTORS AMERICA, INC.
G13291142Courtesy of KIA MOTORS AMERICA, INC.
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "ON".
TCM connector 44 (P-CAN high) Chassis ground - Fig.1
TCM connector 45 (P-CAN low) Chassis ground -
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
TCM connector 44 (P-CAN high) TCM connector 45 (P-CAN low) Approx. 60Ω
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
ECM (component side) 85 (P-CAN high) ECM (component side) 63 (P-CAN low) Approx. 120Ω
ICU (component side) 12 (P-CAN high) ICU (component side) 11 (P-CAN low) Approx. 120Ω
G13291143Courtesy 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".
ABS/ESP connector 1, 25 (Memory power) Chassis ground - Approx. 12V
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
ABS/ESP connector 29 (ON/START Input) Chassis ground - Approx. 12V
  1. Ignition "OFF".
  2. Disconnect battery (-) cable.
  3. Disconnect the electrical connector(s) from the concerned component.
ABS/ESP connector 13, 38 (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) ABS/ESP connector 14 (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) ABS/ESP connector 2 (P-CAN low) Approx. below 1Ω

Good 

No Good