Cruze

DTC B3119

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.

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.

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

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

Scan Tool Reference

Control Module References for scan tool information

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.

⇒	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.

3. 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.

Note: Use DC voltage because comparing to vehicle ground.

4. 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.

⇒	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.

5. 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.

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.

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 or AC voltage signal.

⇒	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.

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.