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Wiring diagram international 4300

No power to A/C clutch

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Posted on Jan 02, 2017

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How to fix


P0741 Torque Converter Clutch Circuit Performance or Stuck Off OBD-II Trouble Code Technical Description Article by Dan Weller ASE Certified Master Technician Torque Converter Clutch Circuit Performance or Stuck Off This diagnostic trouble code (DTC) is a generic OBD-II powertrain code. It is considered generic because it applies to all makes and models of vehicles (1996-newer), although specific repair steps may vary depending on the model. What does that mean? Modern vehicles equipped with automatic transmissions / transaxles use a torque converter between the engine and transmission to increase the engine torque output and drive the rear wheels. The engine and transmission are actually connected by a fluid coupling mechanism inside of the torque converter which is what multiplies the torque until the speeds equalize and create a "stall" speed where the difference in actual engine RPM and transmission input RPM is around 90% efficient. Torque converter clutch (TCC) solenoids commanded by the Powertrain control module/Engine control module (PCM/ECM) or the Transmission control module (TCM) to direct hydraulic fluid and engage the torque converter clutch to create a solid coupling and increase efficiency. The transmission control module has detected a fault with the circuit that operates the torque converter clutch solenoid. Note: This code is similar to codes P0740, P0742, P0743 and P0744. There may be other diagnostic trouble codes associated with the transmission control module that can only be accessed by using an advanced scan tool. If any additional transmission related DTC's appear in addition to the P0741, an electrical failure is likely. Symptoms Symptoms of a P0741 trouble code may include: Performance or Stuck Off Indicator Lamp (MIL) illuminated (a.k.a. Check Engine Light) Minimal decrease in fuel economy, this will not affect engine performance Potential Causes Causes of this DTC may include: Wiring harness to transmission shorted to ground Torque converter clutch (TCC) solenoid internal short Transmission control module (TCM) Diagnostic Steps for P0741 DTC Wiring harness - Check transmission wiring harness for damage or loose connections. Use a factory wiring diagram to locate the appropriate power source and all connection points between circuits. The transmission may be powered by a fuse or relay, and triggered by the TCM. Disconnect the transmission harness at the transmission connector, power source and TCM. Check for a short to ground inside the transmission internal wiring harness by locating the appropriate + and - pins for the torque converter clutch solenoid. Using a digital volt ohm meter (DVOM) set to ohms scale, check for a short to ground in the circuit with the positive lead on either pin and the negative lead to a known good ground. If resistance is low, suspect a short to ground the internal harness or the TCC solenoid - removing the transmission oil pan may be necessary to further diagnose the TCC solenoid. Test the wiring between the TCM and the wiring harness connector at the transmission case using the DVOM set to ohms. Check for a possible short to ground by moving the negative lead on the DVOM to a known good ground, resistance should be very high or over limit (OL). Torque converter clutch (TCC) solenoid - Check the resistance in the TCC solenoid and internal transmission wiring at the transmission case after removing the transmission harness plug (if applicable, some makes/models use a TCM bolted directly to the transmission case). Some makes/models use a transmission wire harness with the TCC solenoid and internal harness as a single unit. Using the DVOM set to ohms, check for a short to ground with the positive lead on either circit to the TCC and the negative lead on a known good ground. Resistance should be very high or over limit (OL), if it is low, suspect a short to ground. Check for voltage on the power side circuit of the TCC solenoid or at the wire harness connector at the TCM with the DVOM set to volts scale, positive lead at the wire being tested and the negative to a known good ground with the vehicles key on/engine off, battery voltage should be present. If no voltage is present, determine the loss of power back through the circuit using the manufacturers wiring diagrams for reference. Transmission control module (TCM) - Since the torque converter clutch is only activated during certain driving conditions, it will be necessary to monitor the TCM with an advanced scan tool to determine if the TCM is commanding the TCC solenoid and what the actual feedback reading is at the TCM. The TCC solenoid is normally controlled by a duty cycle to engage a more comfortable torque converter cluch engagement. To test if the TCM is actually sending the signal, a graphing multimeter set to duty cycle or a digital storage oscilloscope will be required as well. The positive lead is probed into the wiring harness plugged into the TCM and the negative lead to a known good ground. The duty cycle shold be the same as being commanded by the TCM in the advanced scan tool reading. If the cycle stays at 0% or 100% or is intermittent, re-check connections and if all wiring / solenoid is OK, the TCM may be at fault.

Read more at: http://www.obd-codes.com/p0741
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May 16, 2015 | Cars & Trucks

1 Answer

Why is 06 international 4300 fan clutch engaged all the time


Is it a air clutch fan a bad a/c switch can cause this or bad solenoid or wires or ECM circuit now if it's still old school no air line going to the fan hub just change the fan hub it is seized

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Wiring diagram international 4300


the brake light switch will be in the side or base of the foot valve . It is air operated and activates when the foot brakes are applied . It should be about 1 1/4 " in diameter with 2 wires to it

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Tow Truck Won't Start


Plugs coils,wires.

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1 Answer

A/c wiring diagram for 1986 mercury cougar


You might find it on one of the auto parts websites. Autozone has some repair info online.
Otherwise you may need to buy a book from them or Ebay.

Jul 03, 2012 | Mercury Cougar Cars & Trucks

3 Answers

2004 international 4300 diesel engine DT466 need diagram of engine


you must reset the ac system by a certain procedure, with engine off and key on turn on left turn signal and hiold top cruise control buttons for five seconds. system should the work after starting truck.

Jan 28, 2012 | Cars & Trucks

5 Answers

The clutch has to be in for my 85-s10 blazer to start and it wont start unless i use a screwdriver on the starter. any answers?


Your diagram is below. Since the starter jumps at the solenoid, the problem would be the ignition switch, the clutch interlock, or the wiring. Check for power at the yellow wire that goes to the switch under the clutch pedal when the key is turned to start. If you have power on the red wires to the ignition switch but no power coming out when the key is turned to start, replace the switch. If you DO have power on the yellow wire, try bypassing the interlock by pulling the connector off and connecting the terminals inside the connector with a large paperclip. If that doesn't work, the purple wire from the interlock to the starter solenoid may be broken. Please let me know if you have more questions.

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Oct 16, 2011 | 1985 Chevrolet S-10 Blazer

1 Answer

No power to Air Condition Clutch on 1995 Lightning. Fuse #6 is good and there is power there. Where should I look? Thanks for any advice.


If no power at the clutch connector, then there must be an open in the circuit from the fuse to the clutch. Trace the wire back as far as you can, probe the wire with a test light to check for power as you trace the wire. Find a wiring diagram somewhere, google or the dealership to help you trace the open in the wiring.

Feb 27, 2011 | Ford F-150 Cars & Trucks

1 Answer

I need a wireing diagram for the ac on a 1991 Chev PU. Clutch does not kick on. Power at fuse- no power at the tank or at the clutch. Thanks Anne


If the AC system is too too low or too high in system pressures, A safety switch interupts the power to the compressor to protect it. Have you system ck'd befor wasting time figuring out a wiring diagram that will end up telling you to have it ck'd at a shop. Good luck

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