Keyless Buzzer Circuit Troubleshooting (2017 2018 2019 2020)
- Open wire check (PGND line)
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Keyless/power tailgate outside buzzer 2P connector - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Keyless/power tailgate outside buzzer 2P connector: disconnected Test point 1 Keyless/power tailgate outside buzzer 2P connector (male terminals) No. 1: Test point 2 Body ground Is there continuity?
YES
The PGND wire is OK. Go to step 2.
NO
Repair an open or high resistance in the ground wire or poor ground (G603).
- Open wire check (EXT BUZ line)
-1. Disconnect the following connector.
Rear fuse/relay box connector A (44P) - 2. Connect terminals A and B with a jumper wire.
Terminal A Keyless/power tailgate outside buzzer 2P connector (male terminals) No. 2: Terminal B Body ground - 3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Keyless/power tailgate outside buzzer 2P connector: disconnected Keyless/power tailgate outside buzzer 2P connector: jumped to body groundRear fuse/relay box connector A (49P): disconnected Test point 1 Rear fuse/relay box connector A (49P) (female terminals) No. 14: Test point 2 Body ground Is there continuity?
YES
The EXT BUZ wire is not open. Go to step 3.
NO
Repair an open or high resistance in the wire.
- Shorted wire check (EXT BUZ line)
-1. Remove the jumper wire from the keyless/power tailgate outside buzzer 2P connector.
- 2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Keyless/power tailgate outside buzzer 2P connector: disconnected Rear fuse/relay box connector A (49P): disconnected Test point 1 Rear fuse/relay box connector A (49P) (female terminals) No. 14: Test point 2 Body ground Is there continuity?
YES
Repair a short to ground in the wire.
NO
The EXT BUZ wire is OK. Go to step 4.
- Keyless/power tailgate outside buzzer check (substitution)
-1. Substitute a known-good keyless buzzer.
- 2. Check the keyless buzzer function.
Does the keyless buzzer sound?
YES
Replace the original keyless buzzer - Refer to: Keyless/Power Tailgate Outside Buzzer Removal and Installation, or Keyless/Power Tailgate Outside Buzzer Removal and Installation .
NO
Faulty rear MICU, replace the rear fuse/relay box .