Keyless/Power Door Locks/Security Alarm System (MICU) Input Test
  1. Turn the ignition switch OFF.
  1. Disconnect the under-dash fuse/relay box connectors.
    NOTE: All connector views are wire side of female terminals.
  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 are OK, go to Step 5 .
  1. With the connectors still disconnected, make these input tests at the connectors.
    • If any test indicates a problem, find and correct the cause, then recheck the system.
    • If all the input tests prove OK, go to Step 6 .
    Cavity
    Wire
    Test condition
    Test: Desired result
    Possible cause if result is not obtained
    E6
    BLK
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G602) [G652]
    • An open in the wire
    E33
    BLK
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G651)
    • An open in the wire
    F20
    BLK
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G401)
    • An open in the wire
    T34
    BLK
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G503)
    • An open in the wire
    N13
    YEL
    Under all conditions
    Connect battery power to the N13 terminal and ground the N7 terminal momentarily: The driver's door lock actuator should unlock.
    • Faulty driver's door lock actuator
    • An open in the wire
    N7
    BLU
    E20
    GRN
    Under all conditions
    Connect battery power to the E20 terminal momentarily: The tailgate release actuator should work (Tailgate should open).
    • Poor ground (G603) [G651]
    • Faulty tailgate release actuator
    • An open in the wire
    M8
    YEL
    Under all conditions
    Connect battery power to the M8 terminal and ground the M10 terminal momentarily: The pasenger's actuator should unlock.
    • Faulty passenger's door lock actuator
    • An open in the wire
    M10
    BLU

    [ ]:
    RHD

    Cavity
    Wire
    Test condition
    Test: Desired result
    Possible cause if result is not obtained
    M6 *1
    WHT
    Under all conditions
    Connect battery power to the M6 terminal and ground the R4 terminal momentarily: The driver's door lock actuator should unlock.
    • Poor ground (G501)
    • Faulty driver's super locking actuator
    • Faulty driver's super locking relay
    • An open in the wire
    R4 *1
    RED
    M6 *1
    WHT
    Under all conditions
    Connect battery power to the M6 terminal and ground the R5 terminal momentarily: The passenger's door lock actuator should unlock.
    • Poor ground (G502)
    • Faulty passenger's super locking actuator
    • Faulty passenger's super locking relay
    • An open in the wire
    R5 *1
    GRN
    Q4
    GRN
    Under all conditions
    Check for continuity to ground: There should be continuity.
    • Poor ground (G503, G504)
    • Faulty audio unit
    • Faulty navigation display unit
    • An open in the wire
    G6
    BLU
    Under all conditions
    Check for voltage to ground: There should be less than 1V.
    • Blown No. 22 (10 A) fuse in the under-hood fuse/relay box
    • An open in the wire
    G7
    BLU
    Under all conditions
    Connect the G7 terminal and G16 terminal with a jumper wire: The security horn should sound.
    • Blown No. 21 (15 A) fuse in the under-hood fuse/relay box
    • Faulty security horn
    • An open in the wire
    G16
    WHT
    T15 *2
    YEL
    Under all conditions
    Check for continuity between the T15 terminal and No. 3 terminal of the alarm control siren 4P connector: There should be continuity.
    • Alarm control siren
    • An open in the wire
    Check for continuity to ground: There should be no continuity.
    • Alarm control siren
    • A short to ground in the wire

    *1:
    With super locking
    *2:
    With ultrasonic

  1. Reconnect the under-dash fuse/relay box connectors, then make these input tests at the connectors.
    Cavity
    Wire
    Test condition
    Test: Desired result
    Possible cause if result is not obtained
    T27
    GRY
    Driver's door lock switch unlocked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G501)
    • Faulty driver's door lock switch
    • An open in the wire
    Driver's door lock switch in neutral
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door lock switch
    • A short to ground in the wire
    T28
    BLU
    Driver's door lock switch locked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G501)
    • Faulty driver's door lock switch
    • An open in the wire
    Driver's door lock switch in neutral
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door lock switch
    • A short to ground in the wire
    T31
    BRN
    Driver's door key cylinder switch unlocked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G501)
    • Faulty driver's door key cylinder switch
    • An open in the wire
    Driver's door key cylinder switch in neutral
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door key cylinder switch
    • A short to ground in the wire
    T32
    PNK
    Driver's door key cylinder switch locked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G501)
    • Faulty driver's door key cylinder switch
    • An open in the wire
    Driver's door key cylinder switch in neutral
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door key cylinder switch
    • A short to ground in the wire
    T23
    WHT
    Driver's door lock knob switch unlocked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G501)
    • Faulty driver's door lock knob switch
    • An open in the wire
    Driver's door lock knob switch locked
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door lock knob switch
    • A short to ground in the wire
    T24
    LT GRN
    Driver's door lock knob switch unlocked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G501)
    • Faulty driver's door lock knob switch
    • An open in the wire
    Driver's door lock knob switch locked
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door lock knob switch
    • A short to ground in the wire
    T22
    LT BLU
    Passenger's door lock knob switch unlocked
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G502)
    • Faulty passenger's door lock knob switch
    • An open in the wire
    Passenger's door lock knob switch locked
    Check for voltage to ground: There should be 5 V or more.
    • Faulty passenger's door lock knob switch
    • A short to ground in the wire
    E3
    LT GRN
    Passenger's door open
    Check for voltage to ground: There should be less than 1 V.
    • Faulty passenger's door switch
    • An open in the wire
    Passenger's door closed
    Check for voltage to ground: There should be 5 V or more.
    • Faulty passenger's door switch
    • A short to ground in the wire
    E37
    GRN
    Driver's door open
    Check for voltage to ground: There should be less than 1 V.
    • Faulty driver's door switch
    • An open in the wire
    Driver's door closed
    Check for voltage to ground: There should be 5 V or more.
    • Faulty driver's door switch
    • A short to ground in the wire
    R6
    PNK
    Ignition key inserted into the ignition switch
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G403)
    • Faulty ignition key switch
    • An open in the wire
    Ignition switch OFF and ignition key removed from the ignition switch
    Check for voltage to ground: There should be 5 V or more.
    • Faulty ignition key switch
    • A short to ground in the wire
    G13
    GRN
    Hood open
    Check for voltage to ground: There should be less than 1 V.
    • Faulty hood switch
    • Poor ground (G401)
    • An open in the wire
    Hood closed
    Check for voltage to ground: There should be 5 V or more.
    • Faulty hood switch
    • A short to ground in the wire
    E36
    BLU
    Tailgate open
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G652)
    • Faulty tailgate latch switch
    • An open in the wire
    Tailgate closed
    Check for voltage to ground: There should be 5 V or more.
    • Faulty tailgate latch switch
    • A short to ground in the wire
    E13
    LT BLU
    Tailgate outer handle pulled
    Check for voltage to ground: There should be less than 1 V.
    • Poor ground (G652)
    • Faulty tailgate outer handle switch
    • An open in the wire
    Tailgate outer handle released
    Check for voltage to ground: There should be 5 V or more.
    • Faulty tailgate outer handle switch
    • A short to ground in the wire