I am in need of the intake heater relay solenoid wiring diagram for the 3116 cat diesel. Also I am interested in purchasing a service manual for this motor

all fuse good????
is the starter relay bad (oops none there)
does CEL lamp glow key on then goes out ?
it must or PCM is dead or fuse to it dead.
the car may have TCM (trannybrain) and it too must scan good.


OK , the key line wire is dead. (sure NO CRANKS)
is the battery good and lugs clean?
do the head lamps work key off and bright.??????
is rested battery at 12.6vdc? not 10. (called SOC)
does jumper cable jump starts work.? hummmmm?

the transmission if AUTOMATIC<must be in PARK or neutral. to crank. , must, if park fails we always try Neutral next (TRS/PRNDL)
scan the PCM yet?, see if there are transmission errors>?
the schematic is here.

https://eautorepair.net/Marketing/Default.asp

the below is off the Diesel page for this truck.
wow DOUBLE BATTERY F250 !!!!!!
if one fails the bad battery can wreck the good one.
manual trans is clutch switch (no trans told)
auto (A/T) is TRS. (trans, range switch )
central JB fuse pins 4/19 fuse 20 , 15amps NOT BLOWN
hint the fuse is only hot cranked !!!!!!!
there is no relay on the diesel
key on cranked 12vdc feeds the fuse (11vdc low if cranking happens)
and the fuse feeds, below left
if TRS not bad, crank juice goes directly to the solenoid seen here.
middle wire is clutch sw.


cropped to make it more clear.
manual trans only has a clutch pedal switch no TRS there.

Something that fuse powers is shorted to ground . Need to look at wiring diagrams , service repair manual , power distribution diagrams , disconnect everything it powers - one circuit at a time till fuse doesn't blow any more . Then find the short , videos on youtube showing how . EGN A ???? IGN A fuse . ENG 1 or 2
Underhood Fuse-Relay Center Fuse/Circuit Breaker
Rating
Description
ABS Fuse M4-N4
60A
Electronic Brake Control Module
A/C Fuse K11-L12
10A
A/C Compressor Clutch Relay
AUX A Fuse P7-R7
30A
Upfitter Provisions
AUX B Fuse P8-R8
30A
Upfitter Provisions
BATT Fuse M7-N7
50A
Instrument Panel Fuse Block
BLOWER Fuse M3-N3
60A
Blower Motor, IP Fuse Block
ECM-B Fuse F11-G12
20A
Fuel Pump Relay, VCM, PCM, Fuel Pump and Engine Oil Pressure Gauge Sensor
ECM-1 Fuse H7-J8
20A
Ignition Control Module, Ignition Coil, Camshaft Position Sensor, VCM, Fuel Injectors, Crankshaft Position Sensor
ENG-I Fuse L8-K7
20A
Heated Oxygen Sensors, Mass Air Flow Sensor, Exhaust Gas Recirculation Valve Solenoid, Evaporative Emission Cannister Purge Valve, VCM, Secondary Air Injection Relay, WATER IN FUEL Indicator Sensor, Fuel Heater, Glowplug Relay, Wastegate Solenoid, Crankshaft Position Sensor
HORN Fuse H11-J12
20A
Horn Relay, Underhood Lamp(s)
IGN Fuse F5-G6 (Diesel Only)
20A
PCM, Fuel Solenoid Driver, Engine Shutoff Solenoid
IGN-A Fuse M6-N6
40A
Starter Relay, Ignition Switch
IGN-B Fuse M5-N5
50A
Ignition Switch
IGN-E Fuse F7-G8
10A
A/C Compressor Clutch Relay
LIGHTING Fuse M8-N8
40A
Instrument Panel Fuse Block, Headlamp Switch
LH-HDLP Fuse F1-G2 (Export Only)
10A
Left Hand Low Beam Headlamp
LH-HIBM Fuse F3-G4 (Export Only)
10A
Left Hand High Beam Headlamp
RH-HDLP Fuse H1-J2 (Export Only)
10A
Right Hand Low Beam Headlamp
RH-HIBM Fuse H3-J4
10A
Right Hand High Beam Headlamp
RR BLOWER Fuse K5-L6
30A
Auxiliary Blower Motor Relays
ABS Relay (Expot Only)
--
ABS Warning Indicator Lamp
A/C Relay
--
A/C Compressor Clutch Coil
A. I. R. Relay
--
Air Ijection Reaction Pump Clutch Coil
Fuel Pump Relay
--
Fuel Pump
Horn Relay
--
Horns
Starter Relay
--
Starter Solenoid

There's this website www.reliable-store.com
They have books
on ALL vehicles.
it covers wiring diagrams, electrical diagrams, fuse diagram, torque specs, PCV, error codes, fault codes, service info, repair info, parts info, owner's/service/repair/parts/maintenance manuals etc everything totally..
I have 1987 toyota 4runner model and I keep servicing and when needed repair it on my own. worth it !!!

check for water in the fuel , blocked fuel filters , air in the system, air in injector lines
stop solenoid inoperable
call the cat service dealer

has the battery been load tested as that indicates a dead cell/s

Many diesels have two start relays. One is located on the starter motor and is often called the starter solenoid. The other is operated by the ignition key and will typically located under the hood somewhere in the engine compartment. If you don't have a wiring diagram or manual, the easiest way to find it is to disconnect the main power cable from the starter motor and then operate the ignition key into the start position. You should hear the relay clicking.

you should make a diagnostic to know what happened to your car
of course you need an auto diagnostic tool : http://www.chinasnoy.comand you can find all kinds of tools in chinasinoy.com

Check your fusible links; these are small wires molded into the middle of a bigger wire they are usually located up by the battery cables. When they burn they become discolored and softly flexible. Also check your relays too.

theres 2 solenoids on the top of the firewall just left of ur brake booster. 4607036 is the relay