Scangauge says my truck has no ICPV and I'm thinking that might be why it won't start. How do I fix that?

 

Disconnect the ICP sensor and try to restart

Josh

 

One diagram coming up.



Sean

 

It still doesn't start, so I guess that's not my main problem, but how to I fix this one anyway?

I saw the diagram Sean provided, but that electrical diagrams are all Greek to me.

 

You have several threads going?

Do a run down:

Updated STC?
Updated dummy plugs?
Air check?

Recently replaced injectors or oil cooler?
IPR screen intact?

Josh

 

Thanks for helping. I feel stupid because I don't understand electrical diagrams. What could cause me to lose ICP voltage? Is it a part that can be replaced? A pigtail? The ICP sensor? Or what?

 

Yes, I did post multiple threads. Sorry, guess I am a bit impatient - need to get this truck running.

I haven't replaced the STC - not even sure it hasn't been replaced already. Is there any way to tell it's bad without tearing into the engine? Or, for that matter, how would I tell if I have an oil leak at all? I have good ICP and IPR readiings while crankiing (although ICP is 0 at KOEO, it does go over 1200 when cranking).

I haven't done the air check yet. It was cold here today and I'll be working on this outside. Also, just not sure I have any symptoms that indicate an oil leak.

I'm waiting on my IPR socket to arrive in the mail. It is 14.8 KOEO and goes to around 50 will cranking. However, it stays just above 30 at idle. Would that suggest there is nothing wrong with the IPR?

 

Don't fell too bad about reading wiring diagrams. Trying to keep up with 12 pages and many, many points of electrical contact makes for difficult reading for most of us.

What does your scan gauge show as IPR psi as a %? Should show more then 15% but not exceeding 85%.
If your IPR is trying to increase psi from the ICP sensor readings, you probably have a HPOP associated leak somewhere.
Remember, you still need about 540 psi minimum to start.

 

What are the ICP Volts when you see 1200 psi?

Josh

 

Sometimes people get freaked out about wiring diagrams
not sure how you feel other than lost reading one.
One simple way to think of one is just like a road map.
The sensor is the house your going to. Some have more than
one route to get there and there is always a way back home.
We will call the battery home. Sometimes you have to make a
stop on the way to or from home to the place you going (PCM).
I know it can be a little intimidating but start slow. Print out a page
and use a color marker to mark the path you need to deal with and
ignore the rest.
One page 6 top left just under the 6.0L Diesel you can see the IPR.
It is connected to "C" and that is 12Vdc battery it goes down the
line to the PCM. The PCM controls the ground by switching it off and on.
When it on or grounded then the valve is getting power and bringing
the pressure up. Now what you need to know is this. at C1360 do you
have +12CD on pin A? If yes then we need to see if the PCM is switching
or not.

I found you something easy to watch and not burry you.

Sean

EDIT : I wanted to also add this PDF that has the symbols for you.
http://www.autoshop101.com/forms/toyOH_3.pdf

 

It's around 50%. I'm assuming from watching DTRon's vids that if IPR was trying to increase ICP it would be 85%.

 

I never get any ICPVs KOEO or when cranking. Makes me wonder about ScanGauge actually. Where did you get those Xcommand settings? Why doesn't ScanGauge list that command on their site?

I guess I need to buy a voltmeter and figure out how to use it to confirm. I notice in Bismic's No-Start troubleshooting list in the tech folder that I should check the ICP sensor circuit fuse, but don't see that one in the fuse box diagram.

 

Wow, great info. My problem begins with having very little understanding of how electricity works. Then, I didn't understand what all the symbols mean - you've helped with that.

I think you're telling me to check that the IPR is getting power from the PCM to raise the ICP pressure. But, I'm getting ICP pressure NOW according to SG - about 1200psi - not sure why SG only showed 300 right after the truck died. It shows 1200+ every time now.

The only SG numbers that don't seem just right - from what I know - is IPR at idle being in the low 30s and the ICPV reading at 0.00 KOEO and cranking, if the Xcommand settings for ICPV I was given are accurate. I assume I have fuel pressure since I just replaced the pump and blue spring and can see the secondary bowl filling up fast. And I assume I have low oil pressure from watching the dash gauge register and seeing the oil filter bowl fill up fast when cranking.

How can I tell if I have high oil pressure or a leak? I understand that the air test will tell me where to look for the leak, but I was hoping to confirm that I have one before going to the effort to rig up the air test (gotta get adapters).

My first thought was IPR valve, but now I wonder since SG doesn't show IPR being a problem during cranking. If not that, then I guess it is a high pressure leak somewhere. I'm also concerned with ICPV, but since the truck doesn't start with the ICP disconnected, wouldn't it rule that out?

 

Is there a list somewhere of additional Xcommand settings over and above the ones listed for Ford on the SG site?

 

FICM Vehicle Power (Volts) (Should be 12 Volts, should not drop below 10.25 for more than 60 seconds, or 9.0 for 4 seconds. TSB 09-24-03)

TXD: 07E02209CE

RXF: 0462450906CE

RXD: 3010

MTH: 006401000000

NAM: FVP

KO=12.0 LI=14.0 HI=14.0 OR=10.5-15.5



FICM Logic Power (Volts) (Should be 12 volts)

TXD: 07E02209CF

RXF: 0462450906CF

RXD: 3010

MTH: 006401000000

NAM: FLP

KO=12.0 LI=13.5 HI=13.5 OR=10.5-15.5


FICM Main Power (Volts) (Should be 47-48) Your FMP should never dip below 45. If it does, your FICM is toast and needs repaired or replaced.

TXD: 07E02209D0

RXF: 0462450906D0

RXD: 3010

MTH: 006401000000

NAM: FMP

KO=47 LI=47.5 HI=47.5 OR=40-52 (yes, that is what it says from Ford)

VGT Duty Cycle (%)

TXD: 07E022096D

RXF: 04620509066D

RXD: 3010

MTH: 00647FFF0000

NAM: VGT

KO=0 LI=73 HI=43 OR=0-100 %


Engine Oil Temp

TXD: 07E0221310

RXF: 046245130610

RXD: 3010

MTH: 00090005F05F (00090005FFD8 alternate MTH found)

NAM: EOT

Engine hot KO=190 LI=190 HI=190 OR= -40 - 302 *F


Trans. Fluid Temp

TXD: 07E1221674

RXF: 046205160674

RXD: 3010

MTH: 000100080000

NAM: TFT

Horsepower

TXD: 00

RXF: 400080000000

RXD: 0000

MTH: 000A00240000

NAM: HPR



Inj. Control Press. (ICP / HPOP)

TXD: 07E0221446

RXF: 046205140646

RXD: 3010

MTH: 003900640000

NAM: ICP

KO=0 LI=625.5 HI=1400-1450 OR=0-4045


ICP Voltage (Volts)

TXD: 07E02216AD

RXF: 0462451606AD

RXD: 3010

MTH: 004827100000

NAM: ICV

KO=0.2 LI=1.0 HI=1.8 OR=.15-4.7 Volts


IPR Duty Cycle

TXD: 07E0221434

RXF: 046285140634

RXD: 3008

MTH: 0DCA03E8000A

NAM: IPR %

KO=14.84 LI=24 HI=40.60 OR=0-50 %


Throttle Position 1 (Volts)

TXD: 07E0220917

RXF: 046245090617

RXD: 3010

MTH: 006404000000

NAM: TP1

Note: Voltage of the ETC Throttle Position Sensor number 1

KO=4.0 LI=4.0 HI=3.4 OR=0.7 - 4.2 VOLT Accelerator Pedal Track 1


Throttle Position 2 (Volts)

TXD: 07E0220918

RXF: 046245090618

RXD: 3010
MTH: 0064040000000

NAM: TP2

Note: Voltage of the ETC Throttle Position Sensor number 2


KO=1.4 LI=1.4 HI=1.9 OR=1.4 - 4.1 VOLT Accelerator Pedal Track 2
----------------
Throttle Position Desired (Degrees)

TXD: 07E022091A

RXF: 04624509061A

RXD: 3010

MTH: 0064020000000

NAM: TPD

Note: ETC Commanded Throttle Angle, in degrees.


Throttle Position Actual (Degrees)

TXD: 07E022093C

RXF: 04624509063C

RXD: 3010

MTH: 006402000000

NAM: TPA

Note: The measured throttle angle from the throttle sensor inputs.


EGR Duty Cycle (Percent)

TXD: 07E022166E

RXF: 04620516066E

RXD: 3010

MTH: 006440000000

NAM: EGR

KO=0 LI=0-15 HI=32 OR=0-44 %


EGR Throttle Position Control Signal

TXD: 07E022096C

RXF: 04620509066C

RXD: 3010

MTH: 00647FFF0000

NAM: ETP


EGR Valve Position (mm)

TXD: 07E022096A

RXF: 04620509066A

RXD: 3010

MTH: 000100010000

NAM: EVP

Note: EGR Valve Position in hundredths of a millimeter, where 0 mm indicates a closed EGR valve position.


EGR Valve Position Desired (%)

TXD: 07E02209D2

RXF: 0462050906D2

RXD: 3010

MTH: 00647FFF0000

NAM: EVD

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

EGR Valve Position Measured (%)

TXD: 07E02209FE

RXF: 0462050906FE

RXD: 3010

MTH: 00647FFF0000

NAM: EVM
Note: MEASURED EGR Valve Position, in %, where a low value indicates a closed EGR valve (0 EGR flow), and a high value indicates an open EGR valve.

KO=0 LI=0 HI=9.72 OR=0 - 14 PERCENT



EGR Valve Position (Volts 0-5)

TXD: 07E022167E

RXF: 04620516067E

RXD: 3010

MTH: 000133330000

NAM: EGV

KO=0.8 LI=0.8 -1.0 HI=1.3 OR=0.6 - 3.5 VOLT


Camshaft & Crankshaft Sync (1 = in sync, 0 = not in sync)

TXD: 07E02209CD

RXF: 0462050906CD

RXD: 3000 (3001 alternate)

MTH: 000100010000

NAM: SYC

KO=0 LI=1 HI=1 OR 0-1 (NO/YES)


Intake Air Temperature 2 (Fahrenheit)

TXD: 07E02216A8

RXF: 0462051606A8

RXD: 3010

MTH: 000100010000

NAM: IA2

Engine HOT KO=113 LI=113 HI=113 OR= -40-250 *F


Manifold Air Temperature (F)

TXD: 07E02216E0

RXF: 0462051606E0

RXD: 3008

MTH: 00090005FFD8

NAM: MAT




Barometric Pressure

TXD: 07E0221127

RXF: 045285110627

RXD: 3008

MTH: 003100500000

NAM: BMP

KO=96.5 (14) LI=96.5 (14) HI=96.5 (14) OR=50 - 120 (7.3 - 17.4) kPa (PSI) 


Exhaust Back Pressure

TXD: 07E0221445

RXF: 046285140645

RXD: 3010

MTH: 001D00500000

NAM: EBP

KO=103 (15) LI=110 (16) HI=110 (16) OR=55 - 607 (8 -88) kPA (PSI)


Fuel Level

TXD: 007E02216C1

RXF: 0462451606C1

RXD: 3010

MTH: 000101480000

NAM: FL


Volume Fuel Desired

TXD: 07E0221411

RXF: 046245140611

RXD: 3010

MTH: 006400100000

NAM: VFD


Mass Fuel Desired (Milligrams Per Stroke)

TXD: 07E0221412

RXF: 046205140612

RXD: 3010

MTH: 000100100000

NAM: MFD

KO=0 LI=7.5 HI=10.7 OR=0-100


Engine Run Time (Minutes)

TXD: 07DF011F

RXF: 0441051F

RXD: 2810

MTH: 0001003C0000

NAM: ERT

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

Fan Speed Sensor (RPM)

TXD: 07E022099F

RXF: 04620509069F

RXD: 3010

MTH: 000100040000

NAM: FSS

KO=0 LI=533 HI=488 OR=0-4000


Fan Speed Sensor Duty Cycle (%)

TXD: 07E022091F

RXF: 04624509061F

RXD: 3010

MTH: 013103E80000

NAM: FDC




Manifold Absolute Pressure (PSI) (BOOST)

TXD: 07E0221440

RXF: 046285140640

RXD: 3010

MTH: 012203200000

NAM: PSI

MAP is a standard gauge - but this XGauge is actually better than the standard one. It has a larger range which was needed because the standard gauge tops out around 37 psi absolute (about 22 lbs of boost), which diesels have no problem doing. This one should read well beyond 22lbs of boost.

With a little tweaking you can adjust this to read boost as you said.


To do this, just plug in the MAP code - get a reading from it with the key in the on position but the engine off, then based on the reading changed the last 4 digits of the MTH to whatever corresponds to your reading on this table


14.0 -- FF74

14.1 -- FF73

14.2 -- FF72

14.3 -- FF71

14.4 -- FF70

14.5 -- FF6F

14.6 -- FF6E

14.7 -- FF6D

14.8 -- FF6C

14.9 -- FF6B

15.0 -- FF6A


So, for example if you got a reading of 14.5 PSI with key on engine off you'd change the MTH to 01220320FF6F and the reading should read 0.0 with key on engine off and would then show how many lbs of boost you were at when the vehicle is running.


Injector Timing Before Top Dead Center (Degrees)

TXD: 07E02209CC

RXF: 0462850906CC

RXD: 3010

MTH: 000A00400000

NAM: ITM

KO=0 LI=-8.71 HI=+3.5 OR-50 - 50 ANGLE (Degrees) Injector Timing (TDC)

( not sure about the above)


Fuel Injector Pulse Width (Microseconds)

TXD: 07E0221410

RXF: 046205140610

RXD: 3010

MTH: 000800010000

NAM: FPW


Fuel Injector #1 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3001

MTH: 000100010000

NAM: FI1

Fuel Injector #2 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3101

MTH: 000100010000

NAM: FI2


Fuel Injector #3 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3201

MTH: 000100010000

NAM: FI3


Fuel Injector #4 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3301

MTH: 000100010000

NAM: FI4


Fuel Injector #5 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3401

MTH: 000100010000

NAM: FI5


Fuel Injector #6 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3501

MTH: 000100010000

NAM: FI6


Fuel Injector #7 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3601

MTH: 000100010000

NAM: FI7




Fuel Injector #8 Commanded (On/0ff)

TXD: 07E02209EF

RXF: 0462250906EF

RXD: 3701

MTH: 000100010000

NAM: FI8

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

COUNTS MISFIRES IN EACH CYLINDER

Cylinder #1 Cumulative Misfires

TXD: 07E022160E

RXF: 04620516060E

RXD: 3010

MTH: 000100010000

NAM: 1CM


Cylinder #2 Cumulative Misfires

TXD: 07E022160F

RXF: 04620516060F

RXD: 3010

MTH: 000100010000

NAM: 2CM


Cylinder #3 Cumulative Misfires

TXD: 07E0221610

RXF: 046205160610

RXD: 3010

MTH: 000100010000

NAM: 3CM


Cylinder #4 Cumulative Misfires

TXD: 07E0221611

RXF: 046205160611

RXD: 3010

MTH: 000100010000

NAM: 4CM


Cylinder #5 Cumulative Misfires

TXD: 07E0221612

RXF: 046205160612

RXD: 3010

MTH: 000100010000

NAM: 5CM


Cylinder #6 Cumulative Misfires

TXD: 07E0221613

RXF: 046205160613

RXD: 3010

MTH: 000100010000

NAM: 6CM


Cylinder #7 Cumulative Misfires

TXD: 07E0221614

RXF: 046205160614

RXD: 3010

MTH: 000100010000

NAM: 7CM


Cylinder #8 Cumulative Misfires

TXD: 07E0221615

RXF: 046205160615

RXD: 3010

MTH: 000100010000

NAM: 8CM


Gear (Transmission Gear)

TXD: 07E12211B3

RXF: 0462051106B3

RXD: 3008

MTH: 000100020000

NAM: GER

Self explained


Vehicle Speed Sensor (MPH)

TXD: 07E02211C1

RXF: 0462051106C1

RXD: 3010

MTH: 000102000000

NAM: VSS

Self explained


Accelerator Pedal Position (%)

TXD: 07E02209D4

RXF: 0462050906D4

RXD: 3008

MTH: 000100020000

NAM: AP%

Key On=0 LI=0 HI=13 Op range=0-17.75 (mine reads up to 99%, not sure why)


DTC Count (Diagnostic Trouble Code Count)

TXD: 07E0220200

RXF: 046205020600

RXD: 3008

MTH: 000100010000

NAM: DTC

Counts trouble code cycles

KO=0 LI=0 HI=0 OR=0 - 255




VREF (Calibration Voltage Input)

TXD: 07E0221155

RXF: 046245110655

RXD: 3010

MTH: 006433330000

NAM: CVI


KO=4.9 LI=4.9 HI=4.9 OR=4.5 - 5.5 VOLTS Reference Voltage


Net Torque into Torque Converter (Ft-Lbs)

TXD: 07E02209CB

RXF: 0462050906CB

RXD: 3010

MTH: 000100010000

NAM: TRQ