No injector pulse to cylinders 1-4

G57 · 12-27-2023, 04:47 PM

2012 M3 67K miles.

The car will start and run, it runs rough and backfires a bit. Ive got 2 DTCs in the DME for cylinder 2 & 3 something. I dont have my scanner in front of me so I dont know the exact codes, i will get them shortly.

Getting 0ms of injector pulse on injectors 1-4 when car is running. Injectors on cylinders 1-4 have 12V to them. Tested ohms from injector plug grounds to the DME plug and I get 0.6 ohms on each, so grounds from DME to injector are good. I don't want to condemn the DME, from what I read these don't fail very often. Any thoughts?

djsilverjohnson · 12-28-2023, 04:35 PM

Is the 12v supply for 1-4 shared with 5-8?

12-27-2023, 04:47 PM	#1
G57 Registered 0 Rep 1 Posts Drives: Infiniti G35 Sedan Join Date: Dec 2023 Location: FL iTrader: (0)	No injector pulse to cylinders 1-4 2012 M3 67K miles. The car will start and run, it runs rough and backfires a bit. Ive got 2 DTCs in the DME for cylinder 2 & 3 something. I dont have my scanner in front of me so I dont know the exact codes, i will get them shortly. Getting 0ms of injector pulse on injectors 1-4 when car is running. Injectors on cylinders 1-4 have 12V to them. Tested ohms from injector plug grounds to the DME plug and I get 0.6 ohms on each, so grounds from DME to injector are good. I don't want to condemn the DME, from what I read these don't fail very often. Any thoughts?
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12-28-2023, 04:35 PM	#2
djsilverjohnson Private First Class 116 Rep 162 Posts Drives: 2013 E93 M3 Join Date: Feb 2020 Location: Georgia iTrader: (0)	Is the 12v supply for 1-4 shared with 5-8?
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