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Test R: No Communication With Front Electronic Module (Fem)

NOTE: Cycle ignition from OFF to RUN to enable the switched system power feature.
  1. Turn ignition off. Disconnect FEM harness connectors C201C (12-pin) and C201F (20-pin). Turn ignition switch to RUN position. Measure voltage between ground and FEM connector C201C terminal No. 6 (Orange/Green wire). See Figure . Measure voltage between ground and FEM connector C201F terminal No. 1 (Orange/Yellow wire). See Figure . If more than 10 volts exists, go to next step. If 10 volts or less exists, repair open in appropriate wire(s). See WIRING DIAGRAMS  . Recheck system operation.
  2. Turn ignition switch to OFF position. Disconnect FEM 17-pin connector C201A. Measure resistance between ground and FEM harness connectors as specified. See FEM CIRCUIT RESISTANCE TEST  table. If resistance is 5 ohms or less, see MODULE COMMUNICATIONS NETWORK - LS article to diagnose network fault. If resistance is greater than 5 ohms, repair open in appropriate wire(s) between FEM and ground. See WIRING DIAGRAMS  . Recheck system operation.
    FEM CIRCUIT RESISTANCE TEST

    Connector Terminal No. (Wire Color)
    C201C 12 (Black/Red)
    C201A 11 (Black/Red)
    C201A 13 (Black/Red)
    C201A 14 (Black/Red)
    C201A 15 (Black/Red)
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