Electrical short in power door locks - 2000 Ford Focus

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

Hi, sounds like you may have lost power. Check your fuses, remember, you have fuses in the cab and under the hood. Hope that helps

Check debris in the key fob. Over time, dust and dirt may be causing the circuitry to track/short out and implement odd functions.

Hi Michelle , what make model an year vehicle ? On some vehicles this is function is controlled by a door module .

In order to control outside rearview mirror operations, as well as other door functions, the front door modules must be powered up. For this purpose, battery voltage is supplied from the rear fuse block, through separate circuits, to each front door module. Each front door module is separately grounded through a ground stake. The front door modules also use these power and ground supplies to drive the mirror motors, and to provide power and ground to window and lock switches and door lock actuators. In addition, the driver door module (DDM) uses these power and ground supplies to power the driver door switch assembly (DDSA) and integral mirror control switches.
Could have DTC'S - diagnostic trouble codes stored in BCM - body control module .
DTC B1544 01: Mirror Motors Common Circuit Short to Voltage
DTC B1544 02: Mirror Motors Common Circuit Short to Ground
DTC B1544 04: Mirror Motors Common Circuit Open Circuit
DTC B1600 01: Mirror Motor 1 (vertical) Circuit Short to Voltage
DTC B1600 02: Mirror Motor 1 (vertical) Circuit Short to Ground
DTC B1600 04: Mirror Motor 1 (vertical) Circuit Open Circuit
DTC B1605 01: Mirror Motor 2 (horizontal) Circuit Short to Voltage
DTC B1605 02: Mirror Motor 2 (horizontal) Circuit Short to Ground
DTC B1605 04: Mirror Motor 2 (horizontal) Circuit Open Circuit .

The best place to start is take it an have it checked for DTC'S -diagnostic trouble codes ! Not with a code reader ,as these just read OBD2 codes .Not Body control module codes >
DDM Diagnostic Trouble Code (DTC) Index
DDM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1322 Driver Door Ajar Circuit Short to Ground DDM Go To Pinpoint Test N . B1352 Ignition Key in Circuit Failure DDM Go To Pinpoint Test H . B1396 Power Door Lock Circuit Short to Battery DDM Go To Pinpoint Test A . B1397 Power Door Unlock Circuit Short to Battery DDM Go To Pinpoint Test A . B1526 Keyless Entry Circuit Short to Ground DDM Go To Pinpoint Test E . B1553 Decklid Release Circuit Short to Battery DDM Go To Pinpoint Test B . B1751 Park/Neutral Switch Circuit Short to Battery DDM Go To Pinpoint Test K . B2425 Remote Keyless Entry Out of Synchronization DDM Go To Pinpoint Test L . LCM Diagnostic Trouble Code (DTC) Index DTC Description Source Action B1300 Power Door Lock Circuit Failure LCM Go To Pinpoint Test M . B1310 Power Door Unlock Circuit Failure LCM Go To Pinpoint Test M . B1319 Driver Door Ajar Circuit Failure LCM Go To Pinpoint Test N . B1322 Driver Door Ajar Circuit Short to Ground LCM Go To Pinpoint Test N . B1396 Power Door Lock Circuit Short to Battery LCM Go To Pinpoint Test M . B1397 Power Door Unlock Circuit Short to Battery LCM Go To Pinpoint Test M . B1677 Alarm Panic Input Circuit Failure LCM Go To Pinpoint Test O . B1679 Alarm Panic Input Circuit Short to Battery LCM Go To Pinpoint Test O . Visual Inspection Chart Mechanical Electrical

• Binding latches

• Battery junction box (BJB) fuses:
  • circuit breaker 7 (20A)
• Central junction box (CJB)
  • 4 (10A)
  • 6 (15A)
  • 8 (25A)
  • 13 (5A)
• Keyless entry keypad switch
• Power door lock actuator
• Luggage compartment release switch
• Luggage compartment release solenoid
• Connectors or connections
• Wiring harness

It sounds like there is an electrical fault with the Remote locking circuit. When you lock the vehicle, without seeing the schematic electrical drawing, there is a relay that will operate to lock the doors. This applies power to the small motors installed within the doors, that operate the locks open/close (Lock/Unlock). Generally there is an electrical componet that by passes the relay once the doors are locked so it doesnt burn out, e.g Capacior. With that in mind, if this component is shorting out, power will be applied and/ or released from the holding circuit which in turn, will operate the vehicles locking mechanism.
Best way forward
1. If you have a Gregorys manual, available from Super Cheap Auto for under $50, it will have the Electrical circuit drawing for the Door locks, if it's standard fit to the path finder. You will be able then, with the use of a Multi meter, to check out where power is getting to or not (12V dc).

2. If not give the Auto electrician $50 to fix.

As the Nissian is 24 years old, I would be looking for a electrical component failure.

I hope this helps you out mate,
Stevie C.

its posss ur lock acculator is going bad in side ur door or poss broken rod handle to door lock acculator or bushing u need to take off door panel and look inside to see if the rod is hooked up

should like water has frozen inside the door on the mech, its probely released by now , or water has cause a short in the door electrics

if its electrical lock control look in the wires through the door jam for a short on that color wire.make sure you test the power to the lock when you use the switch.if theres power to the lock you have a bad part.

The electrical wires going to the power windows and speakers and locks all go through the A pillar and into the door down by where the hinges are at. When you open the door you will see what looks like a boot between the door and the A pillar, this is where the wires run through. After a period of time these wires inside this boot can become chaffed or broken and can short out and cause the problem you are having. You need to open the door and pull the boot towards the door exposing the wiring. You will need to inspect these wires very carefully and check for chaffing or broken wires and repair. The hardest part is finding the bad wire on this job. You might have to remove the drivers side kick panel and look where they come thru the A pillar. Hope this helps.

Lefty64