B1A71-01

B1A71-01-PASSIVE ENTRY ANTENNA 1 - GENERAL ELECTRICAL FAILURE





For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

For the Theory of Operation, Passive Entry Antenna - Operation.

- When Monitored:
At every Passive Entry or Keyless Go action. Also during the self test routine which is six seconds after an ignition transition to On.

- Set Condition:
Antenna is faulty, out of range, linear factor is to high or low and no other antennas have a short to battery or a short to ground condition.





1. TEST FOR INTERMITTENT CONDITION

NOTE: If there are any antennas that have a Short to Ground or Short to Battery DTC, repair them before proceeding.

1. Turn the ignition on.
2. Using the scan tool, record and erase the DTCs.
3. With the scan tool, select: RF Hub, More Options and System Tests.
4. Perform the RF Hub LF Antenna Verification Tests.
5. With the scan tool, read the Active DTCs.

Does the scan tool display: B1A71-01-PASSIVE ENTRY ANTENNA 1 - GENERAL ELECTRICAL FAILURE as active?

Yes

- Go To 2

No

- Test complete, the condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

2. ANTENNA OR MODULE
1. Turn the ignition off.
2. Disconnect the Passive Entry Antenna 1 connector.

NOTE: Antenna 1 is located in the Left Rear Door. . Rear Door

3. Replace Antenna 1 with a known good antenna.
4. Turn the ignition on.
5. Using the scan tool, record and erase the DTCs.
6. With the scan tool, select: RF Hub, More Options and System Tests.
7. Perform the RF Hub LF Antenna Verification Tests.
8. With the scan tool, read the Active DTCs.

Does the scan tool display: B1A71-01-PASSIVE ENTRY ANTENNA 1- GENERAL ELECTRICAL FAILURE as active?

Yes

- Replace the RF Hub. Radio Frequency Module (RF Hub) - Removal.
- NOTE: If this vehicle is equipped with a Steering Column Lock Module, it MUST be replaced also.

- Replace the Steering Column Lock Module. Shaft Lock Module - Removal
- Perform the RADIO FREQUENCY HUB (RF HUB) VERIFICATION TEST. RF Hub Verification Test

No

- Replace the Antenna. Passive Entry Antenna - Removal
- Perform the BODY VERIFICATION TEST. Body Verification Test.