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DTC B3119

Diagnostic Instructions

    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    • Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC B3119 02: Keyless Entry Aerial 1 Short to Ground

DTC B3119 05: Keyless Entry Aerial 1 High Voltage/Open

Diagnostic Fault Information

Circuit

Short to Ground

Open/High Resistance

Short to Voltage

Signal Performance

Keyless Entry Aerial - Driver Door Signal

B3119 02

B3119 05

B3119 05

-

Keyless Entry Aerial - Driver Door Low Reference

-

B3119 05

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Circuit/System Description

The driver door handle aerial is located in the driver door handle assembly and is used to establish low frequency communications with the keyless entry transmitter. As a vehicle with locked doors is approached with a keyless entry transmitter and the exterior door handle is pulled, the keyless entry control module communicates with the driver door handle keyless entry aerial.

Conditions for Running the DTC

    • The touch pad in the driver door handle is touched within 15 minutes of last door closing.
    • The front or rear door handle on the driver side is pulled.
    • The scan tool activates a device control function to simulate the above actions.

Conditions for Setting the DTC

B3119 02

The keyless entry control module detects a short to ground on the driver door keyless entry aerial circuit.

B3119 05

The keyless entry control module detects a short to B+ or an open on the driver door keyless entry aerial circuit.

Action Taken When the DTC Sets

Doors will not unlock when front or rear driver handle is pulled. Doors will not lock with touch pad.

Conditions for Clearing the DTC

    • A current DTC will clear when the conditions for setting the DTC are no longer present.
    • A history DTC will clear after 40 malfunction-free ignition cycles.

Reference Information

Schematic Reference

Remote Function Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Keyless Entry System Description and Operation : with ATH → without ATH

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

Control Module References for scan tool information

Circuit/System Testing

Note: Verify that the pins are correct for all of the aerials. Make sure to fix any problems with the interior aerials first, before proceeding to the following diagnostics below regarding the exterior aerials. If any of the interior aerial DTCS B3122, B3123, B3124 is set, the diagnostic procedures on the exterior aerials will not work.

  1. Ignition OFF, disconnect the harness connector at the T10M driver door handle aerial.
  2. Ignition ON, verify a test lamp does not illuminate between the signal circuit terminal 1, connector on vehicle side, and vehicle ground and also does not illuminate between low reference signal circuit terminal 2, connector on vehicle side, and vehicle ground.
  3. If the test lamp illuminates, disconnect the connector at the keyless entry control module, test the appropriate signal circuit for a short to voltage. If the circuit tests normal, replace the keyless entry control module.
  4. Connect a DMM, set to capture DC voltage using the MIN MAX function, between the signal circuit terminal 1, connector on vehicle side, and vehicle ground.
  5. Note: Use DC voltage because comparing to vehicle ground.

  6. Activate the driver door handle aerial by manually pulling the driver door handle, only the aerial is disconnected, not the micro switch that is on a different connector. After pressing the min/max button looking for any voltage, verify the DMM captured a DC voltage signal.
  7. If the DC voltage was not captured, test the signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the keyless entry control module.
  8. Connect a DMM, set to capture DC voltage using the MIN MAX function, between the low reference circuit terminal 2, connector on vehicle side, and vehicle ground.
  9. Note: May have to use AC instead of DC voltage for low reference circuit. This increases sensitivity of voltage measurements for this test. It also increases sensitive to outside interference as well. Pay careful attention when the handle is pulled for this test.

  10. Activate the driver door handle aerial by manually pulling the driver door handle, only the aerial is disconnected, not the micro switch that is on a different connector. After pressing the min/max button looking for any voltage, verify the DMM captured a DC or AC voltage signal.
  11. If a DC or AC voltage was not captured, test the low reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the keyless entry control module.
    Clear DTCs then pull driver door handle and check for DTCs again.
    If DTC B3119 returns replace the T10M driver door handle. Clear DTCs again then pull driver door handle and check for DTCs.
    If DTC B3119 returns, replace the keyless entry control module.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

    •  Front Side Door Outside Handle Replacement
    • Control Module References for keyless entry control module replacement, setup, and programming
   


© Copyright Chevrolet. All rights reserved
   


© Copyright Chevrolet. All rights reserved