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Home >> Acura >> 2019 >> MDX Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Security System / Keyless Entry System - Symptom Troubleshooting (Except Hybrid) >> Keyless Access System Symptom Troubleshooting >> The Key-In Reminder Does Not Sound
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The Key-In Reminder Does Not Sound

  1. Open wire check (Driver's door switch line)

    -1. Turn the interior light switch to DOOR position.

    - 2. Open the Driver's door.

    Do the individual map lights come on?

    YES 

    The Driver's door switch wire is OK. Go to step 2.

    NO 

    Open or high resistance in the wire. If the wire is OK, replace the Driver's door switch.

  2. Determine possible failure area (gauge control module, others)

    -1. Select GAUGES from the BODY ELECTRICAL SYSTEM SELECT menu with the HDS.

    Functional Tests - Key Alarm Chime

    Select FUNCTIONAL TESTS from the TEST MODE menu with the HDS, and enter SELF TEST.

    Does the key-in reminder sound?

    YES 

    Go to step 3.

    NO 

    Replace the gauge control module .

  3. Determine possible failure area (keyless access/TPMS control unit, others)

    -1. Connect terminals A and B with a jumper wire.

    Terminals A Keyless access/TPMS control unit connector A (32P) No. 2 (PNK)
    Terminals B Body ground
    GHH326878Courtesy of HONDA, U.S.A., INC.

    Does the key-in reminder sound?

    YES 

    Replace the keyless access/TPMS control unit .

    NO 

    Go to step 4.

  4. Open wire check (IG KEY line)

    -1. Turn the vehicle to the OFF (LOCK) mode.

    - 2. Remove the jumper wire from the keyless access/TPMS control unit connector A (32P).

    - 3. Disconnect the following connectors.

    Driver's under-dash fuse/relay box connector Q (20P) - Refer to: Driver's Under-Dash Fuse/Relay Box Removal and Installation, or Passenger's Under-Dash Fuse/Relay Box Removal and InstallationKeyless access/TPMS control unit connector A (32P)

    - 4. Check for continuity between test points 1 and 2.

    Test condition Vehicle OFF (LOCK) mode Driver's under-dash fuse/relay box connector Q (20P): disconnected Keyless access/TPMS control unit connector A (32P): disconnected
    Test circuit IG KEY
    Test point 1 Driver's under-dash fuse/relay box connector Q (20P) No. 4 (PNK)
    Test point 2 Keyless access/TPMS control unit connector A (32P) No. 2 (PNK)
    GHH326879Courtesy of HONDA, U.S.A., INC.

    Is there continuity?

    YES 

    The IG KEY wire is OK. Faulty MICU; replace the Driver's under-dash fuse/relay box - Refer to: Driver's Under-Dash Fuse/Relay Box Removal and Installation, or Passenger's Under-Dash Fuse/Relay Box Removal and Installation .

    NO 

    Repair an open or high resistance in the wire.