The fuel pump control module works by providing and controlling the voltage to the fuel pumps relay and fuel pump. Typically, the fuel pump regulator is incorporated directly into the PCM, however can likewise be an independent module. The fuel pump gives compressed fuel to the fuel infusion framework and typically positioned inside the gas tank. In some cases, it’s situated along the fuel rail. Most diesel impetus frameworks utilize high-pressure pump mounted on and driven by the motor.
Each time the start is turned on (the PCM is empowered), numerous regulators will start individual tests. One of which is the fuel pump control module, which is remembered for the regulators. By directing inward regulator individual tests, the PCM can screen sequential information extended the CAN (regulator region organization), guaranteeing locally available regulators are interfacing appropriately.
At the point when Error Code P069E is found, this implies the PCM has found a glitch in the fuel pump control module, causing the lighting of the Check Engine light.
Common Symptoms of P069E error code
- no start condition
- Motor drivability issues
- Other error codes might be available also.
Possible Causes of P069E error code
There are numerous reasons for this code, including:
- Blemished fuel pump regulator or PCM
- Awful or stumbled fuel pump voltage shutoff (latency) switch
- Open fuel pump control module voltage supply circuit
- Fizzled or programming mistake in PCM
Instructions to diagnose P069E error code
In case there are other related fuel pump or fuel pump codes put away in the vehicle, then, at that point they should be analyzed and fixed first prior to endeavoring to address Error Code P069E.
Similarly as with most codes, allude with the TSB (specialized help notice) in regards to the code and its manifestations, with vehicle year, make, model and motor considered.
A symptomatic scanner, DVOM (computerized volt-ohmmeter), and a wellspring of solid vehicle data are needed in diagnosing this code.
Interface the scanner and recover all put away codes, including their freeze outline information. Compose these down In case the issue is demonstrated to be irregular. Then, at that point, clear the codes and take the vehicle for a test drive (if conceivable), until the code resets, or the PCM enters availability mode.
In case the vehicle enters availability mode, the issue is discontinuous. This implies you need to trust that the issue will deteriorate before you can appropriately analyse it. If the code resets promptly, proceed with the conclusion.
Then, at that point, utilize your DVOM and the right wiring outline to check in case there is battery voltage on the fuel pump control circuit. Then, at that point, check framework combines and transfers, and supplant deficient parts as important.
If the vehicle comes outfitted with the fuel pump voltage shutoff switch, test it to ensure it’s not deficient or has not been enacted.
In case you discover no voltage in the fuel pump control circuit, then, at that point examine the regulator-related wiring and tackles. Check the skeleton and motor ground intersections also. Once more, utilize the vehicle data source to track down the right ground areas and related circuits.
Assuming voltage is available on the fuel pump control circuit; continue on assessing the framework regulator. Search for indications of water or water harm, warmth, or impact harm. Any harmed regulator should be considered inadequate.
Instructions to Fix
Steps 1 -Record all codes present, just as all accessible freeze outline information. This data can be useful should a discontinuous issue be analyzed later on.
Step 2 -Refer to the manual to find and distinguish all segments accurately. Likewise decide the steering, capacity, and shading coding of all related wiring, and particularly the wiring that is related with the fuel pressure sensor.
Step 3 -In case the motor turns over and runs, find the devoted fuel pressure testing point; in any case, don’t turn over the motor prior to connecting the fuel pressure check to this point. To forestall the chance of a motor fire, just turn over the motor once it is sure certain that the check is appended safely.
Step 4- Play out the fuel pressure test according to the guidelines in the manual to guarantee the most exact test outcomes. Note that the manual will indicate the base and greatest reasonable deviations from the framework’s plan pressure. In case the acquired perusing falls outside of these cutoff points, don’t censure the fuel siphon insane at this time it is conceivable that the fuel pressure sensor is blemished, and is providing the Fuel Control Module/PCM with erroneous information.
Find the fuel pressure sensor, and play out an exhaustive visual investigation of all related wiring. Search for harmed, copied, shorted, separated, or eroded wiring and connectors, and make fixes or supplant wiring as required.
If no noticeable harm to wiring is found, perform obstruction, reference voltage, ground, and congruity minds all its related wiring. Be certain anyway to detach the sensor from the PCM and/or Fuel Control Module to keep away from harm to the controller(s).
Contrast all acquired readings and the qualities expressed in the manual, and fix or supplant wiring as needed to guarantee that all electrical qualities fall inside the reaches determined by the producer. In case all electrical qualities look at, test the obstruction/progression of the fuel pressure sensor itself; supplant the fuel pressure sensor In case it doesn’t adjust to the makers’ details.
Step 5 -In case the shortcoming perseveres, however the fuel pressure looks at according to the qualities expressed in the manual, find all wiring that is related with the Fuel Control Module. Play out an intensive visual assessment of this wiring between the Fuel Control Module and the PCM-search for harmed, copied, shorted, separated, or eroded wiring and connectors, and make fixes or supplant wiring as required.
In case no noticeable harm to wiring is found, perform obstruction, reference voltage, ground, and progression minds all its related wiring. Be certain anyway to detach all important wiring from the Fuel Control Module and PCM to stay away from harm to the controller(s). Make fixes or supplant wiring as needed to guarantee that all electrical qualities fall inside the reaches indicated by the producer.
If all electrical qualities look at, supplant the Fuel Pump Control Module, particularly in case there are any indications of erosion on the packaging if the module is made of metal.
Step 6 -In case a no-start condition is available, find all pertinent wiring, and play out an exhaustive visual review on all wiring, and particularly the wiring between the Fuel Control Module and the fuel siphon. Search for harmed, copied, shorted, disengaged, or consumed wiring and connectors, and make fixes or supplant wiring as required.
In case no apparent harm is found, perform opposition, reference voltage, ground, and coherence keeps an eye on ALL related wiring, and make certain to check the state of breakers and fusible connections in the circuit, just as the activity of all transfers. Be certain anyway to disengage all pertinent wiring from the Fuel Control Module and PCM to stay away from harm to the controller(s). Make fixes or supplant wiring/connectors/wires/transfers as needed to guarantee that all electrical qualities fall inside the reaches indicated by the producer.
In case it is sure that all wiring is liberated from flaws and deformities however the fuel siphon won’t begin, allude to the manual on the right method to follow to test the siphon (and the pressing factor it conveys) with a current drawn straightforwardly from the battery. Know however that eliminating a fuel siphon on certain applications might require evacuation of the gas tank, so counsel the manual on the right technique to access the fuel siphon.
If the fuel siphon starts and conveys its plan pressure when an immediate current is applied, suspect either a damaged Fuel Control Module, or an inadequate PCM. Remember anyway that the Fuel Control Module is definitely bound to fall flat than the PCM, so don’t censure the PCM insane until the Fuel Control Module had been supplanted.
Assuming notwithstanding, the fuel siphon begins when an immediate current is applied however it doesn’t convey its plan pressure, supplant the siphon with an OEM part to forestall a repeat of the issue.
Step 7-In case the deficiency returns, almost certainly, there is irregular disappointment, which can be incredibly difficult to track down and fix. In outrageous cases, it very well might be important to permit the deficiency to deteriorate extensively before an exact analysis and conclusive fix can be made. Note anyway that a discontinuous electrical issue in the fuel framework can make the fuel framework flop startlingly; with conceivable desperate results should this occur in substantial rush hour gridlock.
According to a safety viewpoint, it is strongly suggested that in situations where a discontinuous shortcoming is suspected, the vehicle be alluded to the seller or other able fix office for proficient analysis and fix.
TheAutoPartsShop offers certified mechanics that will help you with your vehicle in diagnosing and fixing the P069E error code.