How do I fix code p1298?
Some of the most common fixes are:
- Replacement of the Electric Load Detector.
- Update or replacement of the PCM.
- Repair open wires.
- Repair or replace Open or shorted Electric Load Detector records.
- Repair poor electrical connection in Electric Load Detector Circuit.
What is a electrical load detector?
The Electronic Load Detector (ELD) detects any electical load on the engine from accessories like A/C controls, radiator fan, lights, heater motor, etc. The ECU uses the ELD’s inputs to adjust alternator output and compensate for the additional electrical loads.
What is an ELD unit?
The ELD is a three wire unit mounted in the fusebox with a primary voltage lead, a primary ground, and a load output lead which is used by the PCM. The PCM is connected to the alternator, not the ELD. The ELD monitors the amperage requirements and informs the PCM as to what to do.
How is Honda eld diagnosed?
The ELD unit is easy to identify by its nondescript reddish-brown color. Also know that the ELD won’t detect loads that are attached directly to the battery.
What is alternator FR signal?
FR = Field Return signal. This signal provides information from the alternator to the PCM to indicate how hard the alternator is working (what percentage of capacity it is operating at).
What does R and F mean on an alternator?
The R and F terminals are the ‘Reference’ or voltage sense terminal and the ‘Field’ terminal. The color on the spade connectors doesn’t matter, you will have to use a multimeter to determine which connector goes to which pin. The R will be hot at all times while the F will only be hot when the ignition is keyed on.
What is M on an alternator?
DF(M) stands for Digital Field Monitor. Every alternator brand has a different abbreviation for the DF(M) connection, for example: FR (Field Return), DF (Digital Field), DFM (See above), M (Monitor), LI (Load Indicator). They all function in the same way.
How many wires can go on a alternator?
An alternator typically has two wires – a main connection (usually labelled B+) which delivers power to the car (and charges the battery) and an IND wire which feeds the internal exciter coils of the alternator. Without a current to the exciter coils, the alternator produces no output.
Can I wire my alternator directly to my battery?
Attach a cable directly from the alternator output post to the positive side of the battery. This allows for full output from the alternator to the battery when heavy electrical demands are placed on the alternator.
What are the 3 wires on an alternator?
Remote voltage sense alternators: The three wires connected to the alternator are the positive, negative cables and a third smaller gauge wire connected to the alternator remote sense or (S) terminal. To determine if your vehicle has remote sense, voltage will always be present on this terminal at all times.
Where do the 2 wires on alternator go?
If the voltage rises above or falls below 12 Volts, the alternator’s internal voltage increases or reduces power output to maintain 12 Volts to the battery and the systems of the vehicle during operation. The second wire of the pair on Pin 2 of the alternator goes to the ignition.
What is the R terminal on alternator?
A key to identifying your alternator terminals
| Terminal | Definition | Notes |
|---|---|---|
| R | Relay | Output to charge relays, etc |
| S | Sense | Battery Voltage sense wire |
| S (FORD) | Stator | Stator Pulse. Used for tachometers |
| T | Tach | Stator Pulse. Used for tachometers |
How do I know if my alternator is 1 wire?
You can verify it’s a one-wire by opening up the case and looking for the letters “SE” on the voltage regulator. If it’s already installed on the vehicle you have to polarize it the first time to get it to work. You just use a jumper wire to supply current to #1 or #2 connector on the side.
How do I convert my alternator to 1 wire?
It’s simple! The only thing you need to hook up on a one-wire alternator is a charge wire from the terminal on the alternator to the positive terminal on the battery (or any positive battery source). The external regulator can either be totally dismantled from the firewall or left in place.
Are car alternators self excited?
Once the engine is running and the alternator is generating power, a diode feeds the field current from the alternator main output equalizing the voltage across the warning indicator which goes off. Some alternators will self-excite when the engine reaches a certain speed.