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Home >> Suzuki >> 2007 >> Reno Standard >> Repair and Diagnosis >> External Pages >> Different car >> Section 214 (Immobilizer System) >> Diagnostic Information and Procedure >> DTC P1621: Immobilizer Communication Line Error >> Detecting Condition and Trouble Area
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Detecting Condition and Trouble Area

WARNING: This page is about a different car, the 2007 Suzuki SX4. However, it is still accessible from the selected car via links, so may be relevant.
DETECTING CONDITION AND TROUBLE AREA REFERENCE

Detecting Condition Trouble Area
Communication error between ICM and ECM.
  • Related fuse(s) blown
  • Poor connection at ICM connector
  • Poor connection at ECM connector
  • Power supply circuit
  • Ground circuit
  • Communication circuits between ICM and ECM
  • ICM
  • ECM