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Pinpoint Test N : P166A

  1. Normal Operation and Fault Conditions 

    REFER to: Engine - Overview .

    DTC Fault Trigger Conditions 

    DTC Description Fault Trigger Condition
    PCM P166A:00 Restraints Deployment Communication Circuit: No Sub Type Information This DTC sets when the PCM detects an open or short in the IES circuit.

    Possible Sources 

    • BCM
    • Wiring, terminals or connectors

  2. N1 DIAGNOSE THE CONCERN USING THE PC/ED (POWERTRAIN CONTROL/EMISSIONS DIAGNOSIS) INFORMATION

    Did the diagnosis in PC/ED instruct to install a new BCM? 

    Yes  Refer to BCM GUIDED ROUTINE .
    No  Concern was resolved using PC/ED service information pinpoint test.