Immobilizer-Keyless Control Unit Input Test
  1. Remove the driver's dashboard undercover, then remove the dashboard lower cover.
  1. Remove the steering column covers.
  1. Disconnect the 7P connector (A) from the immobilizer-keyless control unit (B).
  1. 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 5 .
  1. With the connector still disconnected, make these input tests at the connector.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, replace the immobilizer-keyless control unit.
    NOTE: After replacing the immobilizer-keyless control unit, do the immobilizer registration.
    Cavity
    Wire
    Terminalname
    Test condition
    Test: Desired result
    Possible cause if desired result is not obtained
    7
    BRN
    LG
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G101)
    • An open in the wire
    1
    WHT
    VBU
    Under all conditions
    Measure the voltage to ground: There should be battery voltage.
    • Blown No. 15 (10 A) fuse in the under-hood fuse/relay box
    • An open in the wire
    2
    YEL
    IG1
    Ignition switch ON (II)
    Measure the voltage to ground: There should be battery voltage.
    • Blown No. 9 (20 A) fuse in the driver's under-dash fuse/relay box
    • An open in the wire
    3
    BLU
    B-CAN LO
    Disconnect the gauge control module 32P connector
    Check for continuity between the terminal and the gauge control module 32P connector No. 23 terminal: There should be continuity.
    An open in the wire
    Disconnect driver's under-dash fuse/relay box connector P (20P)
    Check for continuity between the terminal and driver's under-dash fuse/relay box connector P (20P) No. 5 terminal: There should be continuity.
    An open in the wire
    4
    PNK
    B-CAN HI
    Disconnect the gauge control module 32P connector
    Check for continuity between the terminal and the gauge control module 32P connector No. 24 terminal: There should be continuity.
    An open in the wire
    Disconnect driver's under-dash fuse/relay box connector P (20P)
    Check for continuity between the terminal and driver's under-dash fuse/relay box connector P (20P) No. 6 terminal: There should be continuity.
    An open in the wire
    6 *1
    LT GRN
    IMOCD (S-NET)
    Disconnect ECM/PCM connector A (49P) *3 , then ignition switch ON (II)
    Measure the voltage to ground: There should be battery voltage.
    • A short to ground in the wire
    • An open in the wire
    Check for continuity between the terminal and ECM/PCM connector A (49P) No. 46 terminal: There should be continuity.
    An open in the wire
    Disconnect the battery negative terminal
    Measure the resistance between the terminal and body ground: There should be more than 50 kΩ.
    • Faulty imoes unit
    • Faulty driver's under-dash fuse/relay box
    • An open in the wire
    6 *2
    LT GRN
    IMOCD (S-NET)
    Disconnect ECM/PCM connector A (44P) *3 , then ignition switch ON (II)
    Measure the voltage to ground: There should be battery voltage.
    • A short to ground in the wire
    • An open in the wire
    Check for continuity between the terminal and ECM/PCM connector A (44P) No. 44 terminal: There should be continuity.
    An open in the wire
    Disconnect the battery negative terminal
    Measure the resistance between the terminal and body ground: There should be more than 50 kΩ.
    • Faulty imoes unit
    • Faulty driver's under-dash fuse/relay box
    • An open in the wire

    *1:
    K24Z3 engine
    *2:
    R20A3 engine
    *3:
    To disconnect the ECM/PCM connectors, turn the ignition switch to LOCK (0) and jump the SCS line with the HDS.