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II am trying to start an engine out of a Mercedes R 500I have no power to the ECM

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  • Cars & Trucks Master
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What you put it in??may not be compatable with the wiring harness..

Posted on Dec 26, 2013

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Posted on Jan 02, 2017

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Mu Mercedes actros truck is mis firing I tested the injectors and found 4 not getting power have found common wire to those 4 injectors not working tested at ecm plug all ok. is ecm at fault?


The ECM controls the ground to the injectors, and each is controlled by a different driver IC, so if the engine has three working injectors and one bad one and the wiring is not defective from the computer then the computer MAY be at fault, it is a guess without being there to test it.

Aug 29, 2016 | Mercedes-Benz Cars & Trucks

1 Answer

I have a 2000 Mercedes SL500. Cluster is flashing 'start error' and I have a P1570 code. Engine cranks but won't start. Starter has an abbreviated spin time too


code p1570 refers to ignition switch control module/ECM-attempted theft/data bus/not compatible ===causes --wiring--connections--trouble codes stored in other system--ignition switch control module---ECM
If this is a recent problem I would suggest that the ignition switch module be checked/replaced.

Nov 03, 2014 | Mercedes-Benz Mercedes Sl 500 Class Sl500...

1 Answer

My 1998 pontiac firebird service engine light came on and my OBD11 scanner produced 2 trouble codes PO125 ( insufficient coolant temperature for closed loop fuel control.the 3800V6 engine over heating and...


service the engine.. change oil ,filter plugs etc

did you clear the faults before each read
Diagnose Buick 3800 Engine
unusual code that

P0125 is the OBD-II generic code for the engine computer, or Engine Control Module (ECM), not detecting enough heat in the cooling system before the fuel management system can take control. The ECM has a predetermined value after you start your vehicle to expect a certain coolant temperature

P0125 OBD II Trouble Code Insufficient Coolant Temperature for Closed Loop...

ecm runs the engine cooling fans

3800V6 engine over heating and heater produces cold air
try these

EGR vale not working
overheating
inlet manifold gasket leaking
water pump fins corroded
soft radiator hoses
try a new radiator cap

internal heating
heater control tap stuck
directional actuator flaps stuck

Apr 16, 2017 | Cars & Trucks

1 Answer

Chrysler P0560 code


Generic OBD Error Code Details for P0560 System Voltage OBD II Code P0560 refers to
The battery supplies electricity to the ECM even when the ignition switch is OFF. This electricity allows the ECM to store data such as DTC history, freeze frame data, fuel trim values and other data. If the battery voltage falls below a minimum level, the ECM will conclude that there is a fault in the power supply circuit. The next time the engine starts, the ECM will turn on the MIL and a DTC will be set. SymptomsPossible sumptoms of OBD code P0560
- Engine Light ON (or Service Engine Soon Warning Light) - Slow engine start - Low battery power CausesPossible causes of OBD code P0560
- Loose or missing alternator drive belt - Faulty alternator - Battery defective - Open or short system voltage circuit The Error code is generally activated on detection of the following conditions: The P0560 code is detected when there is an open in ECM back-up power source circuit

Apr 24, 2012 | 2002 Chrysler 300M

1 Answer

85 mercedes sl, replaced o2 sensor, disconneted battery. Dash light still on, suggestions ?


Diconnecting the battery will not erase the Trouble Code from the memory of the ECM, you will need to erase the code with a OBD II (On-Board Diagnostic) Scanner. Most Aamco, AutoZone, PepBoys, or O'Reilly's will do this for you for no charge.

Feb 24, 2011 | 2001 Mercedes-Benz S-Class

1 Answer

1997 breeze is shooting codes 12 46 43 55


OBD Code 12 - No Distributor Reference Pulse (Diagnostic Test Active) The Engine Control Module-ECM uses the distributor reference pulse to calculate the engine speed. On newer engines, the Crank Shaft Position Sensor performs this function.

Symptoms:
  • When flashing the Check Engine Light to read codes, code 12 will always display first, indicating the diagnostic system is active
  • The engine will not run with a "hard" code 12 set
Common Problems:
  • Chances are you will never need to diagnose a code 12. Rather, the problem would be a crank, no-start condition.
  • If code 12 does not flash, that would indicate a communication problem with the ECM.
  • Code 12 does not show when reading codes with a scan tool. If there is a communication problem, the scan tool will let you know.



OBD Code 46 - Pass-Key II System Error - Circuit out of Frequency Range The ECM receives a signal from the Pass-Key module. When the correct signal is received, the ECM will allow the engine to start and run. Please review the RepairPal article on the GM Pass-Key Anti-theft systems for more information.

Symptoms:
  • Engine may not start
Common Problems:
  • Faulty ignition lock cylinder



OBD Code 43 - Knock Sensor error The ECM receives a signal from the Knock Sensor based on the amount of engine ping detected. The ECM uses information from this sensor to help calculate fuel delivery and spark timing.

Symptoms:
  • Engine ping
  • Lack of power
Common Problems:
  • Faulty Knock sensor
  • Poor connection at Knock sensor


OBD Code 55 - End Test.


Hope ehit help (remember comment and rated this).

Jul 22, 2010 | 1997 Plymouth Breeze

2 Answers

Engine light on a 2005 Mercedes C230


the engine light on some mercedes come on quite often due to a faulty ground issue either the ECM ground wires and there is about 17 of them going to the ECM itself also can be the engine sensors ground

Jan 21, 2010 | 2005 Mercedes-Benz C-Class

1 Answer

ECM Not communicating with my scanner


It's an OBD I system, so you can't hook up to the ECM with an OBD II scan tool. Have you made sure the ECM is getting power and ground? Have you ruled out any blown fuses, tripped circuit breakers, or blown fusible links?

Dec 27, 2008 | 1991 Toyota Pickup

1 Answer

Ford Bronco II 2.9L V6 engine starting trouble


You should try checking the fuel pressure to see if it too low. If the pump sat for a long time like that and then was turned on for awhile it may have bought the farm. It may still be pumping, but just not enough. Try givng it a compression check as well just to see if it has any problems there.

Sep 08, 2008 | 1988 Ford Bronco II

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