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Old 04-11-2012, 11:20 AM
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Major Headache!!!

Ok i have an 02 7.3 F350 here at my shop thats killing me... Put a new pcm in the truck bc of it not turning the glow plug module on and setting a PO603 Internal cam error code... Got a computer from the dealer today and now the truck wont start and just cranks. It is now setting a few codes such as P1260 Theft detected engine disabled, Tried a lil starter fluid and it kicks but shuts right off. Also i went into the securtiy module with my scanner and got a B1342 Faulty control module and B1359 Ignition run/accy circuit fault , Then in the body computer i have code U1262 SCP Data fault for J1850 bus... Im at a lose with this truck and i also took the aftermarket alarm/remote start out just now and its sitting with the batties disconnected... Any help would be appreciated
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Old 04-11-2012, 11:42 AM
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Ok i let the truck sit with the batteries disconnected for a half hour and it starts for 1 second and then shuts off! I got new codes that came back and they are the P1266 again along with P1670 EF Feedback signal not detected and the PO603 Internal cam error.... Gonna light a match soon
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Old 04-11-2012, 11:56 AM
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OK first, the P0603 is just saying the PCM went underpowered at some point, Just Ignore that one!

The 1260 I'm not sure about, not familiar with the Theft Deterrent System, maybe that's the whole problem?

I have THIS for your 1266;

-------------------------------------------------------------------------------------
* DTCs P1261-P1268 indicate that the low side circuit is shorted to B+ or the high side circuit between the IDM and the injector. The following table lists the circuits to inspect while performing these pinpoint tests, based o the DTC retrieved during the KOEO On-Demand or Injector Electrical Self Tests.

Cyl. DTC Low Side High Side
1 P1261-P0262 555 (T) 1087 (O)
2 P1262-P0265 556 (W) 878 (PK/Y)
3 P1263-P0268 557 (BR/Y) 1087 (O)
4 P1264-P0271 558 (BR/LB) 878 (PK/Y)
5 P1265-P0274 559 (T/BK) 1087 (O)
6 P1266-P0277 560 (LG/O) 878 (PK/Y)
7 P1267-P0280 561 (T/R) 1087 (O)
8 P1268-P0283 562 (LB) 878 (PK/Y)

* Key on/engine off.
* Disconnect IDM.
* Disconnect both connectors on the bank with the code.
* Measure resistance between the low side and battery positive post, then to high side at the injector valve cover connector. Refer to injector illustration at beginning of this pinpoint test for pin location.

Are both resistance readings less than 10,000 ohms?
Yes No
GO to AB7 . REPAIR short in circuits between IDM and injector valve cover connector. RERUN Scan Tool Diagnostic Test.
AB7 CHECK FOR SHORT INTERNAL TO VALVE COVER

* Key off.
* Install Rotunda Glow Plug Injector Adapter 014-00935 or equivalent to valve cover gasket.
* Measure resistance between high side and low side circuits.

Is resistance less than 2.0 ohms on a cold engine?
Yes No
GO to AB8 . Fault may be intermittent. GO to AB10 .
AB8 CHECK FOR SHORT UNDER VALVE COVER

* Key off.
* Remove valve cover.
* Disconnect injector connector.
* Measure resistance between Rotunda Glow Plug Injector Adapter 014-00935 or equivalent and injector connector on both high and low side circuits.

Is resistance greater than 10,000 ohms?
Yes No
REPLACE injector. RERUN Scan Tool Diagnostic Test. GO to AB9 .
AB9 GASKET HARNESS OR UVC SHORT LOW SIDE TO HIGH SIDE

* Remove UVC harness.
* Measure resistance between gasket harness low side and high side circuitry.

Is resistance less than 5 ohms?
Yes No
REPLACE gasket harness. RERUN Scan Tool Diagnostic Test. REPLACE UVC harness. RERUN Scan Tool Diagnostic Test.
AB10 CHECK FOR INTERMITTENT LOW SIDE SHORT TO B+ OR HIGH SIDE

* Key on/engine off.
* IDM disconnected.
* All four valve cover connectors disconnected.
* Using a digital multimeter and the flex tips supplied with the NGS Tester, measure resistance between the suspect injector low side circuit and battery positive post, then to high side circuit on the IDM connector. Refer to injector illustration at the beginning of this pinpoint test for pin location.
* Grasp the harness close to the suspect injector connector. Wiggle and shake harness while working toward the IDM.

Do either resistance readings ever drop below 10,000 ohms?
Yes No
ISOLATE shorted circuit and REPAIR. CLEAR DTCs and RETEST. IDM internal failure. REPLACE IDM.
----------------------------------------------------------------------------------

Your P1670 is also related to the IDM as is resolves "EF signal not detected Open/shorted EF circuit"
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  #4  
Old 04-12-2012, 04:35 AM
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The P1670 code only came since cranking the truck alot trying to start it and also the new computer. Truck never had codes or problems other then glow plug issues which started with the DP tuner bc of the cali emissions. Once the truck ran it ran great! The prob we had was the tuner wasnt allowing the glow plugs to come on. Truck has all the glow plugs,valve cover gaskets, harnesses & GPCM... This starting and stalling with security codes started after installing new comoputer bc the customer cracked the board in the computer taking the chip out
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  #5  
Old 05-15-2012, 09:36 AM
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Well found the problem.... No high pressure oil
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