Turbo Tech: Smaller Engines Offer Diagnostic Opportunities, Engine Build: 452 cid SB2 Small Block Chevy Engine, Nissan Tech Tip: Vehicle Key Not Detected, Hyundai, KIA Develop GPS, Camera Connected Shift System, Engine Build: Stage 2 6.7L Twin Turbo Cummins Engine, VIDEO: Checking For Spark Inside And Outside The Engine. Rather, it applies to select vehicle manufacturers, most commonly among Honda vehicles like Honda Accord, Honda Civic, and Honda CR-V. Other manufacturers with the same error code may have different specifications on the definition, troubleshooting, and repairs for this code. While these jobs are well suited for less-experienced techs, good work habits need to be ­emphasized. When factory accessories are in use (especially lighting and air conditioning), alternator output must be near the maximum level of 14.4-volts. It is very likely that the symptoms which the vehicle in question is exhibiting, as well as the stored code P1298, are the subject of a factory technical service bulletin (TSB). Be sure to clear the codes after the test. As an example, on the Element SUV, it’s recommended that the intake manifold be removed to gain access to the starter. Don’t confuse it with the internal voltage regulator in the ­alternator. 4 fuse and ELD. If there is a battery voltage, turn off the ignition and then connect the ELD 3P connector terminal no. Disconnect the ELD 3P connector, which is located behind or underneath the under hood fuse box. There are multiple reasons for this code to appear, some of the most common causes include: The first thing you can do to diagnose this problem is to reset the PCM. And if the contacts are worn, the brushes can’t be far ­behind. You shouldn’t have any problems with the nuts and bolts of alternator replacement. There have been TSBs regarding these codes, discussing reflash cures and some rare ECM problems, but our experience has been with the ELD units going bad. The PCM regulates the amount of voltage applied to the alternator field coil in accordance with the signal received from the ELD. As with other error codes, this code sets the Check Engine light and registers the error code. VIDEO: What Keeps Spark Plugs In The Head? We have seen problems with ignition switches where the car will start and stall, but it’s not a no-crank issue. This means the ELD (Electric Load Detector) is getting high input voltage. Next, disconnect the PCM connector E (31P) and then check for continuity between body ground and the PCM connector terminal E15. While it’s open to debate whether it’s necessary to remove the manifold, there is no ­debate that the tech has to be careful with the knock sensor if the ­manifold is left in place. 3 terminal is the green/red wire. Carefully inspect the alternator and battery as well as all wiring and connectors associated with the starting/charging system. Then, start the engine and turn on the headlights, check for the same code. Honda charging systems won’t present many problems for the experienced tech, but there are a couple of things to keep in mind. Plus, it’s not a big deal to remove the manifold, which will provide easier access to the starter. As you measure the voltage between the PCM connector terminals A24 (brown/yellow wire) and E15 (green/red wire), make sure you turn the headlights on high. Some of the most common fixes are: For Honda vehicles, there is a factory service bulletin for Honda models such as 2001–2005 Honda Civic, 2002–2004 Honda CR-V 2001-2005, and Honda Civic 2002-2004. The most common starter problem is bad starter contacts. Speaking of charge indicator lamps, Honda uses different strategies for operation depending on the model and year, so a look at the service information is in order if you’re having a problem. If the voltage output signal displayed on the scanner is higher than what is reflected by the voltage display on the DVOM, suspect a defective ELD. That ­applies to every vehicle we work on. On Hondas with a fully charged battery, you won’t see any alternator output unless you introduce a load by turning on the headlamps, blower motor and rear defrost. The GX models use an additional relay after the cut relay, functioning the same as the cut relay with the control circuit grounded by the ECM. All Rights Reserved, Top 10 Things to Check When Your Car Is Not Starting, Faulty PCM (powertrain control module, also known as ECM or engine control module in other vehicle makes), Open or shorted Electric Load Detector Harness, Poor electrical connection in Electric Load Detector Circuit, Replacement of the Electric Load Detector, Repair or replace Open or shorted Electric Load Detector records, Repair poor electrical connection in Electric Load Detector Circuit. If ELD voltage displayed on the scanner matches what is displayed on the DVOM, suspect a defective PCM or a PCM programming error. On some models, charging is delayed for a few minutes after startup as the idle stabilizes; just be patient and remember to create a load. Stay up to date with the latest Underhood Service news. If there is no battery voltage, then check the no. What are the symptoms of code P1298? With ­Hondas being so popular with the ­enthusiast tuner crowd, check for aftermarket sound equipment  and video screens that may be overloading the stock alternator, causing it to overheat. I try to have a diagnostic scanner, a digital volt/ohmmeter, and a reliable vehicle information source like All Data (DIY) on hand when diagnosing a code P1298. Consult your vehicle information source to obtain the correct ELD replacement procedure for the vehicle in question.

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