Only use remote to open door - 1987 Toyota Camry

Here are the codes you posted along with the possible issues that may have caused each code to be triggered. It's possible the circuit these switches share has a problem that needs to be diagnosed.

It could well be a problem with the wiring or a problem with the connections between the switches and the Multiplex Control Unit, or possibly with the Multiplex Control Unit itself.

B1129

• Driver Side Door Lock Knob Switch Signal Error
• Faulty Driver Side Door Lock Knob Switch
• Driver Side Door Lock Knob Switch harness is open or shorted
• Driver Side Door Lock Knob Switch circuit poor electrical connection
• Faulty Door Multiplex Control Unit

B2077

• Right Power Sliding Door Remote Control Switch 1 Signal Error
• Faulty Right Power Sliding Door Remote Control Switch 1
• Right Power Sliding Door Remote Control Switch 1 harness is open or shorted
• Right Power Sliding Door Remote Control Switch 1 circuit poor electrical connection
• Faulty Right Power Sliding Door Control Unit

B2078

• Right Power Sliding Door Remote Control Switch 2 Signal Error
• Faulty Right Power Sliding Door Remote Control Switch 2
• Right Power Sliding Door Remote Control Switch 2 harness is open or shorted
• Right Power Sliding Door Remote Control Switch 2 circuit poor electrical connection Faulty Right Power Sliding Door Control Unit

B2079

• Right Power Sliding Door Remote Control Switch 3 Signal Error
• Faulty Right Power Sliding Door Remote Control Switch 3
• Right Power Sliding Door Remote Control Switch 3 harness is open or shorted
• Right Power Sliding Door Remote Control Switch 3 circuit poor electrical connection
• Faulty Right Power Sliding Door Control Unit

To make the rear door open, you have to hold the button for a while. If the battery is weak, that will drain the power and the door will not open. Try the other remote and see if it works. At that point, I would replace the batteries in both remotes anyway.
That would be the fastest and cheapest way to eliminate one possible problem.
If the inside open button works to open the door, I would say the mechanism is working fine and it is the batteries.
I had to replace the batteries in both my remotes at the 3 year mark. That should be about now, the second time, for yours.
Dave

1. Replace battery in remote
2. Replace sensor at rhf door lock (it is inside of door)

This sounds like a door lock fault. Will need a replacement lock, or there may be a broken wire in the door to pillar boot.

It either needs the door latch replaced for that door, or there are broken wires in the door jam harness.

may be needed reprogramming the remote control

your door lock actuator is worn out or loose wire or poor contact.

If you can unlock it with the key,and not the remote, then it sounds like the lock actuator is not working in that door.In order to check it, the door panel has to come off.

Check door switch connection under door pad in drivers door. Sounds like the electrical connection that sends power from the main door (drivers side) to other door has failed or wiggled loose.

2003-04 Mazda 6 REMOTE PROGRAMMING


Step 1: Open drivers door and leave open.

Step 2: Lock and unlock the driver’s door using the power door lock switch on the door.

Step 3: Insert key into the ignition.

Step 4: Turn key to on position and return to off position. (IMPORTANT - use ON position NOT ACC position). Do this 3 times within 10 seconds. Leave key in the ignition.

Step 5: Open and close the driver’s door 3 times. (Door should be left open after this step).

Step 6: ECU should respond by locking and unlocking the doors.

Step 7: Press any button on remote #1 twice. ECU responds by locking and unlocking the car doors.

Step 8: Press any button on remote #2 (etc.) twice. Each time the ECU will respond by locking & unlocking the doors.

Step 9: Remove the key from the ignition and the ECU will respond a final time with a series of door locks and unlocks. You're done!

Good Luck.