Gm p1682 - P1682 is Control Module Performance Ignition Circuit. Most common fix according to my BlueDriver app is replacing the Ignition Switch. For the sake of testing, I removed the resonator and shot some starting fluid into the TB. The engine would run for a brief time on the starting fluid.

 
Diagnostisera och åtgärda GM P1682: Tändning 1 brytarkrets 2 GM har utfärdat en servicebulletin #PIT4016F för att hantera en GM P1682 felkod och ingen vev, fördröjd vev, eller oönskad vev tillstånd på de fordon som …. Two row john deere 2 row corn planter

that can result in P1682 and P0101 codes setting together. Correction If you encounter a vehicle with the above DTC’s DO NOTreplace the MAF sensor. It will be necessary to inspect the wire to terminal connections inside the X3 connector at the UBEC assembly. Inspect the wire for signs of marginal connection or loose wires (see pictures below).Dec 8, 2021 · #OBDCodeP1682 #ignition1SwitchCircuit2P1682 Ignition 1 switch circuit 2 [SOLVED]This is very informative video on obd code P1682 on GM cars and trucks ... 2004 trailblazer 4.2 p1682 need gm tech, good battery, new ign switch, good volts in and out, autel scanner shows 3.6 - Answered by a verified Auto Mechanic. ... ign circuit 1 low voltage, p1682, replaced switch, good bat voltage in and out to pink wire, have meter, test light, ...Engine Codes. I had the engine codes read today at AutoZone, which were: U0101: Lost Communication with Transmission Control Module (TCM) P1682: Ignition 1 Switch Circuit 2. I had AutoZone reset the codes in case they were left over, but they came back on right away, with all remaining issues.The cost to diagnose the P1682 2018 GMC Sierra code is 1.0 hour of labor. The diagnosis time and labor rates at auto repair shops vary depending on the location, make and model of the vehicle, and even the engine type. Most auto repair shops charge between $75 and $150 per hour.P1682 Causes Here are the most common causes of P1682: Ignition Switch A bad ignition switch is the most common reason that P1682 will occur. You're going to need to test it before you replace it. It's a pretty straightforward process. Here's an article that covers everything that you would need to know about testing it. Fuse BlockMay 20, 2016 · fault codes P1682 & P0689 - resolved. Hello. i have a chevrolet malibu 2010 3.5 V6 ( LZE engine ) and started to get very confusing problem. minute of driving when i get stopped for parking i received ENG POWER REDUCED and all following message like ESC & Traction message. and engine start to work like on 3 cylinder instead of 6. i shutted it ... General Motors (GM) is an iconic American automobile manufacturer that has left an indelible mark on the automotive industry. With a history spanning over a century, GM has consist...P1682 On the dash it is giving me this.. service traction, service tire monitor, engine power reduced, service ESC. After clearing the code it runs good for a short while then starts running real bad and will hardly move. can only go 20 MPH. ... I have a 2005 Chevrolet Uplander LT and when you go to accelerate, the words traction active appear ...P0562, P057C, P057E, P0641, P0651, P0697, P06A3, P06D2, P103B, P1682, P16A7 and/ or P2128 Set Brand: Model: Model Year: VIN: Engine: Transmission: from to from to Chevrolet Malibu (VIN Z) 2016 2016 1.5L (LFV) Malibu 2017 2017 Involved Region or Country North America and Israel Condition Some customers may comment on any of the following conditions:Diagnostic fault code P1682 is indicative of an imbalance in voltage between an ignition switch’s #1 & #2 circuits. This imbalance can wreak havoc on a vehicle’s …When the Trailblazer SS stops running after being driven, Terry did a series testing and researching to find the fuse box is known for leaving many TBSS owne...What We Have Done: General Motors is providing owners with additional protection for the condition described above. If this condition occurs on your 2009 model year Buick Lacrosse or Allure vehicle or 2009-2011 model year Chevrolet Impala vehicle within 10 years of the date your vehicle was originally placed in service or 120,000 miles gm 以外の車両では、p1682 トラブル コードは「点火 1 スイッチ回路 2」として定義されており、前の定義と同様の意味を持ちます。 したがって、診断の手順も同様です。 gm 車両では、これら xnumx つの回路が ecm にバッテリー電力を供給します。 The "life-saving" devices in these Buick, Chevrolet, and GMC SUVs could prove fatal. From the life-threatening irony department: General Motors is recalling almost a million SUVs d...Causas del código OBD2 P1682. Los motivos que provocan al almacenamiento del código de diagnóstico P1682 OBD2 son: Puede que el interruptor de encendido tenga daños. El circuito del swtich de encendido podría estar en corto. El relé de potencia podría estar defectuoso. El Módulo del control del motor pudiera tener deficiencias.Since I got the car, I have installed a new battery, new starter, new BCM, cleared DTCs, except for the permanent codes P1682, P2078, P0685, P0686 that will not clear until the underlying problem is addressed, whatever that may be. Here are the DTC reports for my vehicle, Permanent_DTCs_1.pdf and Permanent_DTCs_2.pdf.P1682 - 2014 GMC Acadia - 112k miles. Good afternoon, to start with, this issue started occuring about 2 months ago. My wife calls me and says the suv stalled out after showing engine power reduced, traction control off, stabilitrak, vehicle goes into limp mode and sometimes it would just stall out altogether.To diagnose the P1682 GMC code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Nov 16, 2020 ... On the GM navigation website it states that my 2016 Acadia is compatible to upgrade to the 2017 version via a usb drive. Has anyone tried to ...P1682 Ignition 1 Switch Circuit 2 Malfunction. Possible Causes. Powertrain relay has failed; If DTC P0685, P0689 or P0690 are set, repair the cause of these codes first! ECM connector is damaged (check pins for damage, and for moisture) Underhood electrical center or Junction block has failed; ECM has failedRecived a Code P1682. Hi Im David, thanks for visiting the site. please allow me a few minutes to get that information for you. thanks for your patience. Here are the schematics and a circuit test. try removing the purge velve connector the nsee if the fuse still blows. if so then remove the pwr/trn relay.RSS. 1. 25/04/2021 6:41 am. Topic starter. Hi Scotty, I have a 2010 Chevy Silverado 1500, LS, 4.8L automatic transmission, 4x4 crew cab, 250,000km. I have the code P1682 since 3 yrs. In summer, the check engine light goes off (not always), in winter the code is on all the time. My battery doesn't last more than 1.5 year.663 posts · Joined 2012. #7 · Mar 30, 2018. Wish I could have gotten to this post earlier. The 2009 threw 2011 Chevrolet Impalas have special warranty coverage on the accelerator pedal assembly due to a broken solder connection in the APP sensor. Symptoms being reduced engine power and loss of traction control assist, codes p2122, p2123 ...GM P1682; GM PassKey and PassLock overview; GM starter wiring diagram; Harsh shift, rough idle, GM service bulletin #PIP5446A; Heater fan won't stop running - GM products; How to perform a GM throttle body relearn procedure; Intermittent Chevrolet no start; Intermittent heated seats on GM SUVs; Keyless door lock fob doesn't work — GM ...Subject: Intermittent Crank No Start With DTC P1682 Models: 2014 Chevrolet Impala The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern Some owners may comment of an intermittent crank / no start concern. When checking for DTCs, the ECM will have a P1682 set.P1682 is a diagnostic trouble code that indicates that your Opel Meriva's ignition switch is having a voltage problem. It is typically caused by a faulty ignition switch, although there can be other causes as well. There are two "circuits" to the ignition switch. The first one goes to the ECM through the throttle.Thanks for Watching.....Like, Share, Comment And Subscribes..... Follow us on our Facebook Page....KenKej AutoElecTrixO código de problema P1682 é um problema que aparece na maioria dos modelos de carros. Mas esta é uma questão que depende do fabricante e tem significados diferentes em veículos diferentes. Estaremos analisando o código P1682 em veículos GM, incluindo os modelos GMC, Oldsmobile, Buick, Chevrolet, Cadillac, Hummer, Saturn, Pontiac e Isuzu.Nov 16, 2020 ... On the GM navigation website it states that my 2016 Acadia is compatible to upgrade to the 2017 version via a usb drive. Has anyone tried to ...2008 Trailblazer, P1682. What needs repaired? - Answered by a verified Chevy Mechanic ... ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience. Mike S. Chevy Mechanic. 2,417 satisfied customers. ASE Certified Master Technician. Ted G. ASE Certified Technician. 1,838 satisfied customers.Home GMCP1682 GMC DTC P1682 Make: GMC Code: P1682 Definition: Ignition 1 Switch Circuit 2 Description: P1682 The powertrain relay is commanded on. Ignition 1 Signal voltage is greater than 5.5 V. DTC P1682 runs continuously when the …Location of 2007 chevy trailblazer thermostat. Follow the radiator hose back to the engine on the top side. Where the hose connects to the engine is the thermostat housing. Remove the hose clamp and hose (when vehicle is cool). remove the housing itself and the thermostat will be right in front of you. . 1 answer.P1682 sets typically whenever a low voltage condition exists, The battery voltage being low from playing the radio would cause this, especially if you have aftermarket ampilifier or any aftermarket accesories installed on the ignition circuit. Below is a bulletin on the code from GMThe P1682 code is defined as "Driver 5 Line 2" in General Motors vehicles. Here is a guide about the meaning, causes and fix for this code. www.way.com. . Ray. '09 Avalanche LTZ - 5.3 - 4x4 - Black. This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.The P1682 code is a diagnostic trouble code (DTC) that indicates a problem with the ignition switch circuit. This code is specific to General Motors (GM) vehicles and …Simply remove it, inspect it for corrosion at the connectors, or any evidence that there is damage causing a poor connection. See pic 1 for the relay location. Now, if everything looks good, switch that relay with a different one under the hood having the same part number and see if the same issue exists.Jun 19, 2023 · The P1682 code is a generic powertrain code, which means that it may appear on vehicles from various manufacturers. This code indicates that there is an issue with the ignition switch circuit, which may lead to the vehicle stalling or failing to start. The ignition switch is a crucial part of your vehicle’s starting system, and if the switch ... Sep 12, 2019 · GM P1682 Diagnose and fix GM P1682: Ignition 1 Switch Circuit 2. GM has issued a service bulletin #PIT4016F to address a GM P1682 trouble code and no crank, delayed crank, or unwanted crank condition on the vehicles listed below. The problem appears as a crank, no start, or an intermittent no start along with a check engine light and GM P1682 ... Solving P1682 Crank No Start Issues: A Comprehensive Guide. The process of diagnosing and repairing a P1682 Crank No Start issue can be daunting for many technicians. However, by following a few key steps, it is possible to quickly identify the cause of the problem and get the vehicle running again.GM Corporate Affairs. K-Electric Karāchi, Sindh, Pakistan. GM Corporate Affairs. K-Electric Karāchi, Sindh, Pakistan 3 weeks ago Be among the first 25 applicants See who K-Electric has hired for this role No longer accepting applications. Report this job ...P1682 pontiac ignition g6Cruze p0237 chevrolet boost turbocharger sensor 2014 chevy cruze 1.4 code p1101 update videoCruze chevy camshaft position actuator exhaust.. Check Details Check Details. 2014 Chevy Cruze 1.4 code p1101 Update Video - YouTube. Check Details. DTC P0420: Catalyst System Low Efficiency - 2013 Chevrolet Cruze | GM. Check ...GM provides two separate discounts to the family members and friends of GM employees. To receive the Family First discount, a purchaser must be a family member of a GM employee. Em...Trouble code P1682 comes up and shuts the car down to limp mode, no throttle or power steering. We can erase the code and it runs great until the code comes up again. ... Gm Tech (Cam) GMC Mechanic. 2,224 satisfied customers. GM Grand Master Technician 2007. 14 year experience. Pete. GMC Mechanic. 1,516 satisfied customers. GM training and ...Reduced engine power light. P1516 P2101 In this video would be going over what the reduced engine power light means and what you should do to fix it, a few ...3.17K subscribers. Subscribed. 947. 127K views 2 years ago. #OBDCodeP1682 #ignition1SwitchCircuit2 P1682 Ignition 1 switch circuit 2 [SOLVED] ...more. #OBDCodeP1682...The 2014 Chevrolet Traverse has 32 NHTSA complaints for the power train at 47,516 miles average. (Page 1 of 2) ... This happens at all speeds and in park. Engine code P1682. Been happening since ...P1682 code. No start. 09 chevy 2500 4x4 6.0 liter. 175k miles. P1682 code popped up and truck would not start. I removed and cleaned the whole fuse block under the hood. Problem was gone for a month. "Reduced engine power" message appeared again yesterday with p1682 code. Truck now will not start and the code reader will not erase …The "life-saving" devices in these Buick, Chevrolet, and GMC SUVs could prove fatal. From the life-threatening irony department: General Motors is recalling almost a million SUVs d...The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is covered by the New Vehicle Limited Warranties. The availability of courtesy transportation to customers whose vehicles are within the warranty coverage period and involved in a product program is very ...Bad repairs caused this customer to buy an ECU when it wasn't the problem as you see here it was soldered on both sides then just crimped together with a con...To diagnose the P1682 2018 GMC Sierra code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.Nov 16, 2020 ... On the GM navigation website it states that my 2016 Acadia is compatible to upgrade to the 2017 version via a usb drive. Has anyone tried to ...The next step in diagnosing a P1682 crank No Start issue is to inspect the starter system. The starter system includes the starter motor, starter solenoid, and starter wiring. If the starter system fails or has a fault, the vehicle may not start. The technician should inspect the starter motor, solenoid, and wiring for any signs of damage or wear.GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know ...The problem is you can start throwing money at the sensors but that's not going to fix what caused the sensors to go haywire in the first place. The code P0641 is your throttle position sensor. You can try to replace the fuel rail pressure sensor. 2009 Silverado 1500. K&N Air Filter.Dexos oil is the only type of oil that General Motors (GM) recommends owners use in their cars, as other brands, which contain different compositions, may cause damage and void war...Diagnostisera och åtgärda GM P1682: Tändning 1 brytarkrets 2 GM har utfärdat en servicebulletin #PIT4016F för att hantera en GM P1682 felkod och ingen vev, fördröjd vev, eller oönskad vev tillstånd på de fordon som …I also have a 2014 traverse and the P1682 (driver 5 Line 2) check engine code has just started coming on. The car was - Answered by a verified Chevy Mechanic. ... An informational PI/Bulletin was released by GM for this fault code and condition occurring in your vehicle. The most common cause is a burned terminal in the dash fuse panel to …The P1516 is manufacturer-specific. Most often, it is seen with GM brand vehicles, and code P1516 indicates that the Throttle Actuator Control (TAC) system isn't working as it should. This control system monitors the data from the throttle and compares it with the target. If these don't line up, the ECM determines there's a problem.Code P1682 is often caused by a malfunctioning ignition switch, a bad electrical connection, and an open or shorted ignition switch harness. The most common symptoms of code P1682 include a lit check engine light, …TheOnlineCheat. 12 posts · Joined 2015. #2 · Dec 16, 2016. If it's cranking batt good and starter is working. So for a running motor your missing spark and fuel. Check to make sure you have spark on all 4 plugs. Really easy since it's a inline 4 banger. Then check fuel rail to make sure your getting fuel.Como reparar falla de que no enciende la troca y pone código P1682O código de problema P1682 é um problema que aparece na maioria dos modelos de carros. Mas esta é uma questão que depende do fabricante e tem significados diferentes em veículos diferentes. Estaremos analisando o código P1682 em veículos GM, incluindo os modelos GMC, Oldsmobile, Buick, Chevrolet, Cadillac, Hummer, Saturn, Pontiac e Isuzu.P0689 is a diagnostic trouble code (DTC) for "ECM/PCM Power Relay Sense Circuit Low". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $154.99 .Welcome to GM Wholesale Direct's Online Parts Store. With over 60,000 parts in stock, and over 500,000 more available within a few days, you're sure to get the part you need quickly and at wholesale or BETTER prices! You can shop from entire OEM part catalogs right here online. To get started select from the makes below.Jun 19, 2023 · The P1682 code is a generic powertrain code, which means that it may appear on vehicles from various manufacturers. This code indicates that there is an issue with the ignition switch circuit, which may lead to the vehicle stalling or failing to start. The ignition switch is a crucial part of your vehicle’s starting system, and if the switch ... P1682 Chevrolet Description. There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). The first ignition circuit is provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the internal ECM circuits associated with the throttle actuator control (TAC) operation.GM P1682 September 12, 2019. Diagnose and fix GM P1682: Ignition 1 Switch Circuit 2 GM has issued a service bulletin #PIT4016F to address a GM P1682 trouble code and no crank, delayed crank, or unwanted crank condition on the vehicles listed below. The problem appears as a crank, no start, or an intermittent no start along with a check engine ...Help!!!!! My 14 cruze 1.4L has codes p0335 p0336 & p1682. Crank sensor performance & crank sensor ckt codes. (No throttle response rough idle stalls out & reduced power mode) Also a voltage code for ignition switch. I put a new cranksensor & connector on it & neg. Battery cable but no luck! Crazy thing is with the crank sensor out of the block ...This 2009 Chevrolet Colorado was towed in for a no crank condition. Problem is high resistance in the Run/Crank relay circuit and low ignition voltage to the...Problemas de Código P1682. Problemas más específicos: Me aparece el código p1682 . Ver manual del propietario. Significado Código P1682: Medicion bomba aceite - defectuosa. Problemas destacados. Falla codigo P1682 y p0325 dirección hidraulica y potencia reducida. Chevrolet Malibu 2099 4 puertas motor 2.4 170000 kms.Esta consumiendo bastante gasolina después de que presenta la falla y le han diagnosticado el código p1682 ... ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience. Mike S. Chevy Mechanic. 2,417 satisfied customers. ASE Certified Master Technician. Ted G. ASE Certified Technician.NOTE: While most sources, including official GM sources, list code P1682 with the definition "Driver 5 Line 2", many online non-official GM sources list this code as P1682 - "Ignition 1 Switch Circuit 2". In practice, the latter definition describes the same problem as the former. Thus, from a diagnostic perspective, the two ...Diagnostic fault code P1682 is indicative of an imbalance in voltage between an ignition switch’s #1 & #2 circuits. This imbalance can wreak havoc on a vehicle’s …P1682 Ignition 1 Switch Circuit 2 ECM DTC P1682 P1751 Shift Valve 1 Performance TCM DTC P1751 P182E Internal Mode Switch - Invalid Range TCM DTC P182E or P1915 P1876 Up and Down Shift Enable Switch Circuit Low Voltage TCM DTC P0815, P0816, P0826, or P1876 P1915I have codes p1516, p0030, p0036, p0102, p2101 and p1682. I have replaced the throttle body, o2 sensors, MAD sensor, and air filter, along with adding sea foam into the tank. Any help would be greatly appreciated thank you. Save Share. Like. 2. 27jbishop27 Discussion starterGM revealed Wednesday a new electric architecture that will be the foundation of the automaker’s future EV plans and support a wide range of products across its brands, including c...Chevrolet Silverado 1500 2016 - 2017 All All All All GMC Sierra 1500 2016 - 2017 All All All All Involved Region or Country ... - DTC P1682 or P129D - Engine stays running with ignition off While performing normal diagnostics, voltage may be found on any one of the following underhood electrical center fuses with the ignition off: F26UA, F31UA ...P1682 gmHow-to: ignition switch replacement/p1682 repair. 2018 chevrolet silverado 1500 p15112Intermittent crank no start with dtc p1682 – 2014-2015 chevrolet. 2014 Chevrolet Silverado 1500 - P06DD is coming up. Have changed sensor. Check Details. Ignition repair p1682. 2006 envoy 5.3 random die and no restart, p1682, p0689, …Below are simple diagnostic steps when using a scan tool to monitor voltage. 1. Key On Engine Off (KOEO) check the ignition 1 and EC ignition relay voltage values on the scanner. 2. Check for any add on devices connected to the circuits. 3. Remove and inspect the PWR/TRN relay and the RUN/CRANK relay.

P1682 yes tried resetting. 2009 Impala 3.5 engine. Battery, Battery Cables Ground and Positive - Answered by a verified Chevy Mechanic ... ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience. Mike S. Chevy Mechanic. 2,417 satisfied customers. ASE Certified Master Technician. Ted G. ASE Certified .... Hudson deegan injury 2023

gm p1682

The next step in diagnosing a P1682 crank No Start issue is to inspect the starter system. The starter system includes the starter motor, starter solenoid, and starter wiring. If the starter system fails or has a fault, the vehicle may not start. The technician should inspect the starter motor, solenoid, and wiring for any signs of damage or wear.GM General Motors OBD-II Diagnostic Trouble Codes. Search. ... P1675 EVAP Vent Solenoid Control Circuit P1676 Driver 4 Line 6 P1677 Driver 4 Line 7 P1680 Driver 5 P1681 Driver 5 Line 1 P1682 Driver 5 Line 2 P1683 Driver 5 Line 3 P1684 Driver 5 Line 4 P1685 Driver 5 Line 5 P1686 Driver 5 Line 6 P1687 Driver 5 Line 7 P1689 Delivered Torque ...What is the Cost to Diagnose the Code P1682 2015 Chevrolet Silverado? Labor: 1.0. To diagnose the P1682 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type.Yes, truck has been sold. this is from the winter time Today we diagnose my Silverado with tons of electrical issues. ABS, AWD, any many other lights on the ...CRANK NO START. CODE P1682. IGNITION SWITCH WAS REPLACED AND DID NOT CORRECT ISSUE. RUN/CRANK AND PWR/TRN RELAYS ARE GOOD. NOW TURNED TO A NO CRANK/NO START. BATTERY TESTS GOOD. FUEL PUMP IS COMING ON. There are problems on these with low voltage at the underhood electrical center.GM Releases Service Bulletins About Loose Connections ∞. GM has released multiple technical service bulletins (TSB) about connection issues in the fuse block. One of the latest is TSB #19NA276 regarding "customer concern of potential reduced engine power message displayed and/or engine stall with DTCs P1682 and/or P0689 set.What is the Cost to Diagnose the Code P1682 2015 Chevrolet Silverado? Labor: 1.0. To diagnose the P1682 2015 Chevrolet Silverado code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the …P1682 Chevrolet Description. There are 2 ignition 1 voltage circuits supplied to the Engine Control Module (ECM). The first ignition circuit is provided by the powertrain relay, through a fuse. This ignition 1 voltage circuit supplies power to all the internal ECM circuits associated with the throttle actuator control (TAC) operation.En la mayoría de los modelos GM, las causas del código P1682 serán similares. Puede ver algunas de estas causas a continuación. Interruptor de encendido defectuoso: esta es la causa más común del código. Reparar o reemplazar el interruptor de encendido hará que el código desaparezca. Arnés del interruptor de encendido: el código ...Relays are used to control a high-power circuit with a low power signal. The output circuit is switched to the ground to activate the component. The Diagnostic Trouble Code (DTC) will be set when the Control Circuit is out of range for greater than 1 s. P10E4 Chevrolet Code - Ignition On/Start Circuit Source Bypass Relay Control Performance.P1682 whats the problem,, we replace new fuse box, and ECU, programmed and the same, wont start GM Mechanic: GM Tech (Cam) , replied 9 years ago Circuit/System Testing Note: You must perform the Circuit/System Verification before proceeding with Circuit/System Testing.2009 Malibu. p1682. Mechanic's Assistant: Are you fixing your Malibu yourself? What have you tried so far? I am a gm tech. this issue has me stumped. Mechanic's Assistant: Anything else you want the mechanic to know before I connect you? Have voltages across necessary fuses for ign ckts to ecm. have ignition voltage to ecm when problem exists.The fifth wire is the power relay sense circuit. It is used by the PCM to monitor power relay voltage. If the PCM detects a low voltage condition on the power relay sense circuit, a code P0689 will be stored and a malfunction indicator lamp (MIL) may be illuminated. A typical PCM powertrain control module, opened up:.

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