When I turn the key on the fuel level and the voltage guage stay down like the truck is shut off. It will not display P codes using the three turns of the key trick. When I checked C codes I got the following:
27 64
29 64
81 00
A3 17
AA 00
00 00
Last time it started the stereo caught on fire and it blew three fuses. I replaced the fuses and now the lift pump will not come on and the preheaters do not start. I checked the fusable link going to the ECU and it is good. One of the codes is for lost communication with ECU. Any help would be appreciated.
Thanks,
Andy

 

your gonna need to try and get some codes some how i never could get anything from the key trick on anything above 02. nevere worked on my 03 06or my 07. check all your fuses and relays mite have shorted them out when the stereo went

 

When I first put the Edge on I would get the check engine light on every once in a while if I stayed in the throttle too long on level 4 or 5. I was able to get the codes then, but that was a couple of years ago. After the newness of the chip wore off and I intalled the exhaust and intake upgrades I quit getting the codes. I would get them more misfire. I am going to see if a code scanner will read the codes.

 

Check power and grounds to ecm

 

Engine Control Module C2 (diesel) - 50 Way Cav Circuit Function
1 K22 18dr/db Throttle Position Sensor Signal
2 K24 18wt/dg Crankshaft Position Sensor Signal
3 K69 18 Br/lb Injector Control Signal No.1
4 - -
5 K154 18gy Intake Air Heater Relay No. 2
6 K152 18wt Intake Air Heater Relay No. 1
7 - -
8 - -
9 - -
10 Y5 18or Fan Speed Sensor
11 G7 18wt/or Vehicle Speed Signal
12 G60 18gy/yl Engine Oil Pressure Switch Sense
13 - -
14 - -
15 - -
16 D21 18pk Sci Transmit
17 - -
18 - -
19 D20 18lg Sci Receive
20 A140 16dg/wt Fused B(+)
21 Z816 16bk/tn Ground
22 - -
23 Y3 18wt -
24 K4 18bk/lb Sensor Ground 1
25 - -
26 G8 18 Lb/bk Fuel Level Sensor Signal
27 K77 18 Br/wt Transfer Case Position Sensor Input
28 D25 18vt/yl Pci Bus
29 - -
30 A140 16dg/wt Fused B(+)
31 - -
32 Y135 18lg/bk Fused Ignition Switch Output (run-start)
33 - -
34 - -
35 K68 18br/lg Inlet Air Pressure Sense
36 V32 18yl/rd Speed Control Supply
37 K29 18wt/pk Brake Switch Sense
38 - -
39 - -
40 A140 16dg/wt Fused B(+)
41 C13 18db/or A/c Clutch Relay Control
42 - -
43 Y1 18lg Fan Speed Control
44 - -
45 - -
46 V37 18rd/yl S/c Switch Signal
47 K118 18pk/yl Battery Temperature Sensor Signal
48 K400 18br/vt Accelerator Pedal Position Sensor Return No. 2
49 Z816 16bk/tn Ground
50 Z816 16bk/tn Ground

 

I rented a scanner from Autozone and it could not link up to the ECM, tried the unit in my Powerstroke just to make sure it worked and it is OK. I am going to have to check the power at the plug tommorow. Will check the grounds and the ignition switch power to ECM also. Will the ECM not having power cause my fuel and voltage guage on the dash not to work.
Thanks

 

I have power at 20,30 and 40. I have ground at 21. No ground at 49 or 50. I purchased the all data software from Autozone and cannot find where splice S164 is. The elctrical prints show all three grounds originating at that splice. It also doesn't show where ground G114 is. Niether one of these is in the indexes. The search fuction is crap, only looks up parts nor connectors, splices or grounds.
Thanks

 

I have power at 20,30 and 40. I have all three grounds and I have power at 32 when the key is turned on. I did not see any damage wiring to indicate that the communication leads might be damaged. I believe I may have a damaged ECM. Any thoughts? Anyone now where to get a ECM for less than $1000? I found one place on the internet last night that had them for $980.

 

Is this the same for an '05? I am getting ready to order a ECM monday. My problem was the volt gauge acting like yours, but my truck WAS running. I cannot pull any codes either and the dealers scanner would not communicate with the ECM.