FixVault
Home › Honda › 2012 › Ridgeline RTL › Repair and Diagnosis › Body & Frame › Door Locks › Immobilizer System › Imoes Unit Input Test/Replacement › USA models

USA models

  1. Remove the rear panel insulator (see REAR PANEL INSULATOR REPLACEMENT ).
  2. Disconnect the 5P connector (A) from the imoes unit (B).
    Fig 1: Identifying 5P Connector And Imoes Unit
    G05968934Courtesy of AMERICAN HONDA MOTOR CO., INC.
  3. Inspect the connector and socket terminals to be sure they are all making good contact.
    • If the terminals are bent, loose or corroded, repair them as necessary, and recheck the system.
    • If the terminals look OK, Go to step 4.
  4. Reconnect the connector to the imoes unit, and do the following input test:
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, the imoes unit must be faulty; replace it.
    TEST CONDITION REFERENCE CHART

    Cavity Wire (Signal) Test Condition Test: Desired result Possible cause if desired result is not obtained
    1 BRN/YEL (LG3) In all ignition switch positions Measure the voltage to ground:
    There should be battery voltage.
    • Faulty PCM
    • An open or high resistance in the wire
    5 WHT/RED (+B) Under all conditions Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 7 (7.5 A) fuse in the under-dash fuse/relay box
    • An open or high resistance in the wire
    3 BLK/GRN (IG1) Ignition switch ON (II). Measure the voltage to ground:
    There should be battery voltage.
    • Blown No. 19 (15 A) fuse in the under-dash fuse/relay box
    • An open or high resistance in the wire
    2 RED/BLU (IMOCD) (S-NET) Under all conditions
    NOTE: Test with imoes unit, PCM, and immobilizer control unit-receiver disconnected.
    		 Check for continuity to ground:
    There should be no continuity.
    • Faulty immobilizer control unit-receiver
    • Faulty PCM
    • A short to ground in the wire
    Check for continuity between terminal No. 2, PCM connector A (49P) terminal No. 46, and immobilizer control unit-receiver terminal No. 2:
    There should be continuity
    4 RED/WHT (KEY SW) Ignition key removed from the ignition switch Measure the voltage to ground:
    There should be battery voltage
    • Faulty PCM
    • Faulty ignition key switch
    • An open or high resistance in the wire
    Ignition key inserted in the ignition switch Measure the voltage to ground:
    There should be less than 0.2 V.
    • Faulty ignition key switch
    • An open or high resistance in the wire
    • Poor ground (G401) or an open in the ground wire
About FixVault