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Home >> Kia >> 2023 >> Sorento Plug-In Hybrid SX Prestige >> Repair and Diagnosis >> External Pages >> Different car >> Section 52 (Motor Driven Power Steering System Diagnosis (PHEV)) >> DTC C1604-04: ECU Hardware Error >> 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.
G14941332Courtesy of KIA MOTORS AMERICA, INC.
Charging System Inspection
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Shift lever position "P" and Ignition "ON".
  2. Start the engine and turn the headlight, rear window defogger and all other electrical devices.
  3. Measure voltage between (+) terminal and (-) terminal of battery while maintaining engine RPM at 2500 RPM.
 Battery (+) Terminal Battery (-) Terminal 9 to 16V
MDPS Unit Circuit Inspection
Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
  1. Disconnect the electrical connector(s) from the concerned component.
  2. Ignition "ON".
 MDPS unit connector 1 (power) Chassis ground - B+
MDPS unit connector 1 (ON/START Input) Chassis ground - B+
  1. Ignition "OFF".
  2. Disconnect the battery (-) terminal.
  3. Disconnect the electrical connector(s) from the concerned component.
 MDPS unit connector 2 (ground) Chassis ground - Approx. below 1Ω

Good 

No Good 

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