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Home >> Kia >> 2021 >> Sorento EX, FWD >> Repair and Diagnosis >> Brakes >> Traction Control >> Abs/ESC Diagnosis (Except HEV) (2 Of 4) >> DTC C1646-83: CAN Signal Error TCU >> Wiring Inspection >> Circuit Inspection

Circuit Inspection

G13666875Courtesy of KIA MOTORS AMERICA, INC.
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.
TCM (G 2.5 T-GDI) connector 6 (Memory power) Chassis ground - B+
TCM (G 2.5 T-GDI) connector 2, 3 (ground) Chassis ground - Approx. below 1Ω
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
  3. Ignition "ON".
TCM (G 2.5 T-GDI) connector 13 (ON/START Input) Chassis ground - B+
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
PCM (G 2.5 GDI) connector 49, 50 (Memory power) Chassis ground - B+
PCM (G 2.5 GDI) connector 94, 117 (ground) Chassis ground - Approx. below 1Ω

Good 

No Good 

CAN communication circuit Inspection (W/O EPB)
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "ON".
HECU connector 8 (P-CAN high) Chassis ground - Fig.1
HECU connector 7 (P-CAN low) Chassis ground -
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
HECU connector 8 (P-CAN high) TCM (G 2.5 T-GDI) connector 20 (P-CAN high) Approx. below 1Ω
PCM (G 2.5 GDI) connector 6 (P-CAN high)
HECU connector 7 (P-CAN low) TCM (G 2.5 T-GDI) connector 19 (P-CAN low) Approx. below 1Ω
PCM (G 2.5 GDI) connector 7 (P-CAN low)
  1. Ignition "OFF".
  2. Disconnect the battery (-) terminal.
  3. Disconnect the electrical connector(s) from the concerned component.
HECU connector 8 (P-CAN high) HECU connector 7 (P-CAN low) Approx. 60Ω
CAN communication circuit Inspection (With EPB)
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Ignition "ON".
HECU connector 23 (P-CAN high) Chassis ground - Fig.1
HECU connector 22 (P-CAN low) Chassis ground -
  1. Ignition "OFF".
  2. Disconnect the electrical connector(s) from the concerned component.
HECU connector 23 (P-CAN high) TTCM (G 2.5 T-GDI) connector 20 (P-CAN high) Approx. below 1Ω
PCM (G 2.5 GDI) connector 6 (P-CAN high)
HECU connector 22 (P-CAN low) TCM (G 2.5 T-GDI) connector 19 (P-CAN low) Approx. below 1Ω
PCM (G 2.5 GDI) connector 7 (P-CAN low)
  1. Ignition "OFF".
  2. Disconnect the battery (-) terminal.
  3. Disconnect the electrical connector(s) from the concerned component.
HECU connector 23 (P-CAN high) HECU connector 22 (P-CAN low) Approx. 60Ω
G13666876Courtesy of KIA MOTORS AMERICA, INC.

Good 

No Good