The keyless entry antenna - left is located in the left hand door pull handle and is used as a short range low frequency (LF) antenna. As a vehicle with locked doors is approached with a valid keyless entry transmitter, and the exterior door handle is pulled, the keyless entry antenna broadcasts a challenge to the transmitter in approximately 1 meter range. If the response from the transmitter via radio frequency (RF) is valid, the locked door will be passively unlocked/unlatched and allow the door to be opened.
This diagnostic procedure supports the following DTC:
DTC B3119 Keyless Entry Antenna 1 Performance
This vehicle has DTCs which include DTC Symptoms. For more information on DTC Symptoms, refer to DTC Symptom Description .
DTC Symptom | DTC Symptom Descriptor |
---|---|
02 | Short to Ground |
05 | Short to Battery or Open |
The remote control door lock receiver (RCDLR) will set this DTC during antenna authentication if the keyless entry antenna - left is open, shorted to battery positive voltage, or shorted to ground. The RCDLR can only set a DTC when the vehicle system voltage is between 9-16 volts.
The RCDLR will set and store DTC B3119 Keyless Entry Antenna 1 Performance.
• | The RCDLR no longer detects an open, short to power, or short to ground on the antenna circuit. |
• | Use the scan tool. |
The following numbers are corresponding to the steps in the diagnostic table.
Check to see if DTC B3119 is current.
Check if the driver door handle operates properly. A valid input from the driver door handle is required by the RCDLR to authenticate the antenna.
Testing for power and ground to the keyless entry antenna.
Step | Action | Yes | No | ||||
---|---|---|---|---|---|---|---|
Schematic Reference: Remote Function Schematics Connector End View Reference: Remote Function Connector End Views | |||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||
Important: To achieve service by pass mode, ignition ON engine OFF, a programmed key fob must be detected within the passenger compartment of the vehicle.
Does the scan tool display the DTC B3119 set as current? | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections | |||||
Does the driver door handle state display INACTIVE? | Go to Step 4 | ||||||
Important:
Was an A/C voltage signal captured on the DMM? | Go to Step 7 | Go to Step 5 | |||||
5 | Test both the keyless entry antenna low reference and signal circuit for an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 12 | Go to Step 6 | ||||
6 | Inspect for poor connections at the RCDLR. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 12 | Go to Step 8 | ||||
7 | Inspect for poor connections at the keyless entry antenna - left. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 12 | Go to Step 10 | ||||
8 | Test the keyless entry antenna signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 12 | Go to Step 9 | ||||
9 | Replace the RCDLR. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 12 | -- | ||||
10 | Test both the keyless entry antenna signal and low reference circuit for a short to power. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 12 | Go to Step 11 | ||||
11 | Replace the keyless entry antenna - left. Refer to Front Side Door Outside Handle Replacement . Did you complete the replacement? | Go to Step 12 | -- | ||||
12 |
Does the DTC set again? | Go to Step 3 | System OK |