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Home >> Kia >> 2024 >> Telluride SX X-Line >> Repair and Diagnosis >> Accessories & Equipment >> Communication Devices >> Integrated Central Control Unit Diagnosis (1 Of 2) >> DTC B1621-00: ECU-Failure >> Wiring Inspection >> Circuit Inspection >> Module Inspection

Module Inspection

Inspection Item Inspection Condition (+) Probe (-) Probe Specification
Connector Terminal Connector Terminal
Power inspection (ICU ↔ Chassis ground)
  1. Disconnect ICU connector.
  2. ACC "ON".
ICU connector 40 (ACC Input) Chassis ground - B+
Power inspection (ICU ↔ Chassis ground)
  1. Disconnect ICU connector.
  2. Ignition "ON".
ICU connector 31 (IG1 Input) Chassis ground - B+
Power inspection (ICU ↔ Chassis ground)
  1. Disconnect ICU connector.
  2. Ignition "ON".
ICU connector 26 (IG2 Input) Chassis ground - B+
Power inspection (ICU ↔ Chassis ground)
  1. Disconnect ICU connector.
  2. Ignition "ON".
ICU connector 1, 2, 3, 4, 17 (Memory power) Chassis ground - B+
Open in circuit inspection (ICU ↔ Chassis ground)
  1. Ignition "OFF".
  2. Disconnect ICU connector.
ICU connector 16, 24 (ground) Chassis ground - Approx. below 1Ω

Good 

No Good