How do you remove wiring harness from transmission

Aspen limited hybrid, 5.7L engine. Front wheel drive, the starter appears to be on backside of engine, down low. You'll probably have to safely raise and support the vehicle to get at starter motor. Anytime your working under a vehicle there are safety issues, safety is your responsibility. This database isn't always correct, if the picture is wrong, my bad.

P0744 Torque Converter Clutch Circuit Intermittent OBD-II Trouble Code Technical Description Article by Dan Weller ASE Certified Master Technician Torque Converter Clutch Circuit Intermittent 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, P0741, P0742 and P0743. 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 P0744, an electrical failure is likely. Symptoms Symptoms of a P0744 trouble code may include: Intermittent 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 damaged, loose connection, or intermittent open/short circuit Torque converter clutch (TCC) solenoid Transmission control module (TCM) Diagnostic Steps for P0744 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). Test the wiring for the control circuit between the TCM and the wiring harness connector at the transmission case using the DVOM set to volts scale - it may be necessary to remove the pin from each side of the harness connector to isolate it from the harness while it is still plugged into the TCM and transmission case. With the positive lead on either end of the wiring and the negative lead to a known good ground, check for the presence of battery voltage with the key on/engine off. If voltage is present, suspect a short to power and determine the source of the short circuit in the wire harness assembly. Hint: Wiggling the wire harness and connectors while testing may help locate an intermittent short to power or ground. 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. The DVOM should be set to ohms scale with the positive lead and negative lead on the pins for the TCC power and control circuit. Resistance should be within manufacturers specifications, if it is very high or over limit (OL), remove the transmission oil pan to inspect the solenoid inside the transmission if possible. Check for voltage on the power side circuit of the TCC solenoid with the key on/engine off and harnesses plugged or at the wire harness connector at the TCM with the DVOM set to volts scale, positive lead on the control side of the solenoid and the negative to a known good ground with the vehicles key on/engine off, battery voltage should be present. Tap the solenoid and wiggle the wiring to determine if a short to power or ground exists. 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 is intermittent on rough road conditions, it may be a wiring fault. Re-check connections and if all wiring / solenoid is OK or if road conditions do not coincide with the intermittent readings, the TCM may be at fault.

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• michaelsciarIF YOU HAVE THE TRANSMISSION APART, 2 THINGS YOU CAN DO, FAST BUT COSTLY REPLACE THE HARNESS, PART NUMBER 24229643 OR FIND THE TAN WIRE (1) FROM THE TCC LOCK UO SOLENOID, TAN, FOLOW THE WIRE, IT GETS RAPPED ON A BRACKET FOR A SENSOR, AND THE WIRE COATING GET SHAFTED AND GROUNS THE WIRE, UNPLUG THE HARNESS FROM SOLENOID AND REPAIR, USE A SMALL PEACE OF HOSE TO PROTECTE IT FROM DOING THE SAME THING LATER. GOOD LACK. Apr 14, 2014
• 
  michaelsciarIF YOU GO TO A TRANSMISSION SHOP LIKE AAMCO, THEY WELL SELL YOU A TRANSMISSION !! Apr 14, 2014
  

transmission diode is located in the red wire to transmission wire harness that feed power to the tcc solenoid inside the transmission side pan where valve body located the inside pan wire harness is the harness where diode located when you remove side pan cover the top red feed wire at top harness where positive diode tied in the red wire circuit.if you referring to diode instead fuse that only thing i can think of.

1. Disconnect and isolate negative battery cable.
2. Raise and support vehicle.
3. Note: If equipped with 4WD and certain transmissions, a support bracket is used between front axle and side of transmission. Remove 2 support bracket bolts at transmission. Pry support bracket slightly to gain access to lower starter mounting bolt.
4. Remove two mounting bolts (2).
5. Move starter motor towards front of vehicle far enough for nose of starter pinion housing to clear housing. Always support starter motor (1) during this process, do not let starter motor hang from wire harness.
6. Tilt nose downwards and lower starter motor far enough to access and remove nut that secures battery positive cable wire harness connector eyelet to solenoid battery terminal stud. Do not let starter motor hang from wire harness.
7. Remove battery positive cable wire harness connector eyelet from solenoid battery terminal stud.
8. Disconnect battery positive cable wire harness connector from solenoid terminal connector receptacle.
9. Remove starter motor.

Starter Motor -located to articulate with flywheel that has gear teeth between the engine and transmission accessible from down below. REMOVAL & INSTALLATION 240SX WITH AUTOMATIC TRANSMISSION

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Support the transmission with a jack and remove the 4 rear mounting bracket bolts.
3. Lightly lower the transmission to make room and pull out the dipstick tube.
4. Remove or disconnect the following:
   • Negative battery cable
   • Connector bracket from the front mount bracket
   • Harness connector
   • Starter bolts
   • Starter
   To install:
   
5. Install or connect the following:
   • Starter and torque the bolts to 30-37 ft. lbs. (40-50 Nm)
   • Harness connector
   • Connector bracket to the front mount bracket
   • Dipstick tube
   • Transmission into position
   • 4 rear mounting bracket bolts
   • Negative battery cable
6. Remove the transmission jack

WITH MANUAL TRANSMISSION

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Connector bracket from the front mount bracket
   • Harness connector
   • Starter bolts
   • Starter
   To install:
   
3. Install or connect the following:
   • Starter and torque the bolts to 30-37 ft. lbs. (40-50 Nm)
   • Harness connector
   • Connector bracket to the front mount bracket
   • Negative battery cable

1.6L and 2.0L Engines

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Wiring at the starter
   • Bolts attaching the starter to the engine
   • Starter
   To install:
   
3. Install or connect the following:
   • Starter and torque the bolts to 70 inch lbs. (8 Nm)
   • Starter electrical connections
   • Negaative battery cable

Maxima

1. Remove or disconnect the following:
   • Negative battery cable
   • Air duct
   • Harness protector from the harness
   • Starter wiring at the starter
   • Starter-to-engine bolts
   • Starter from the vehicle

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   To install:
   
2. Install or connect the following:
   • Starter and torque the long bolt to 57-72 ft. lbs. (77-98 Nm) and the short bolt to 22-30 ft. lbs. (30-41 Nm)
   • Starter wiring
   • Harness protector
   • Air duct
   • Negative battery cable

Altima

1. Remove or disconnect the following:
   • Negative battery cable
   • Air inlet tube
   • Harness bracket
   • Wiring at the starter
   • Starter
   To install:
   
2. Install or connect the following:
   • Starter and torque the bolts to 60 inch lbs. (7 Nm)
   • Starter electrical connectors
   • Harness bracket
   • Air inlet tube
   • Negative battery cable

If you have doubts about doing this repair I suggest you let and Certified Mechanic (ASE) do the repairs its not and easy task



REMOVAL PROCEDURE

1. Disconnect the electrical connector from the crankshaft position (CKP) sensor.
2. Remove the transmission from the vehicle.
3. Remove the flywheel or the flex plate from the crankshaft.
4. Remove the 2 bolts (3) and the sensor wire harness clips or shield.
5. Remove the bolt (4) securing the CKP sensor to the engine block (5).
6. Remove the CKP sensor (1) and the wire harness (2) from the vehicle.
7. Inspect the CKP sensor signal rotor for damaged or missing teeth through the CKP sensor opening.
8. 

INSTALLATION PROCEDURE

NOTE: Do not pinch or damage the CKP sensor wire harness between the engine block and transmission during the transmission installation. Observe that the CKP sensor wire harness remains properly located in the channel provided at the rear of the engine block during the installation.

1. Lubricate the CKP sensor O-ring with clean engine oil.
2. Install the CKP sensor (1) to the engine block (5)
3. Secure the CKP sensor to the engine block with the bolt (4). Tighten Tighten the bolt to 6 N.m (54 lb in) .
4. Secure the sensor wire harness to the engine block with the clips or the shield and the 2 bolts (3).
5. Install the crankshaft flywheel or flex plate.
6. Install the transmission.
7. Connect the CKP sensor electrical connector.

Good luck

YOU HAVE TO REMOVE REAR STEERING GEAR CROSS MEMBER.REMOVE THE WIRE HARNESS FROM THE WIRE HARNESS RETAINING CLIPS ON THE TRANSMISSION OIL COOLER LINE BRACKET.REMOVE TRANSMISSION OIL COOLER LINE BRACKET BOLT.REMOVE RIGHT TRANSMISSION COVER BOLT.THEN REMOVE STARTER BOLTS THEN REMOVE STARTER.

I hope this helps:

REMOVAL & INSTALLATION 240SX WITH AUTOMATIC TRANSMISSION

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Disconnect the negative battery cable.
3. Support the transmission with a jack and remove the 4 rear mounting bracket bolts.
4. Lightly lower the transmission to make room and pull out the dipstick tube.
5. Remove or disconnect the following:
   • Connector bracket from the front mount bracket
   • Harness connector
   • Starter bolts
   • Starter
   To install:
   
6. Install or connect the following:
   • Starter
   • Starter bolts. Tighten the bolts to 30–37 ft. lbs. (40–50 Nm).
   • Harness connector
   • Connector bracket to the front mount bracket
   • Dipstick tube
   • Transmission into position
   • 4 rear mounting bracket bolts
7. Remove the transmission jack
   • Negative battery cable

WITH MANUAL TRANSMISSION

1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
2. Remove or disconnect the following:
   • Negative battery cable
   • Connector bracket from the front mount bracket
   • Harness connector
   • Starter bolts
   • Starter
   To install:
   
3. Install or connect the following:
   • Starter
   • Starter bolts. Tighten the bolts to 30–37 ft. lbs. (40–50 Nm).
   • Harness connector
   • Connector bracket to the front mount bracket
   • Negative battery cable

1.6L and 2.0L Engines

1. Remove or disconnect the following:
   • Negative battery cable from the battery
   • Wiring at the starter
   • Bolts attaching the starter to the engine
   • Starter from the vehicle
   To install:
   
2. Install or connect the following:
3. Install the components in the reverse order of removal.

Maxima

1. Remove or disconnect the following:
   • Negative battery cable from the battery
   • Air duct
   • Harness protector from the harness
   • Starter wiring at the starter
   • Starter-to-engine bolts
   • Starter from the vehicle Fig. 1: Starter location and mounting detail — Maxima with a manual transaxle
     
   To install:
   
2. Install or connect the following:
   • Starter
   • Starter attaching bolts. Tighten the long bolt to 57–72 ft. lbs. (77–98 Nm) and the short bolt to 22–30 ft. lbs. (30–41 Nm).
   • Starter wiring
   • Harness protector
   • Air duct
   • Negative battery cable
3. Start the engine a few times to make sure of proper operation.

Altima

1. Remove or disconnect the following:
   • Negative battery cable from the battery
   • Air inlet tube
   • Harness bracket
   • Wiring at the starter
   • Bolts attaching the starter to the engine
   • Starter from the vehicle
   To install:
   
2. Install the components in the reverse order of removal.

I only have 2003 Nav procedure. Maybe get used part at car-part.com. Page with * is lowest price.

SECTION 307-05: Automatic Transaxle/Transmission External Controls 2003 Expedition/Navigator Workshop Manual
REMOVAL AND INSTALLATION Selector Lever —Floor Shift Removal and Installation

1. Lift the floor shift PRNDL bezel.

1. Disconnect the PRNDL bezel wire harness connector.

1. Remove the shift lever handle and cover.
   1. Slide the handle bezel down.
   1. Remove the screw.
   1. Disconnect the TCS wire harness.
   1. Lift assembly from the shifter lever.

1. Position the window regulator control panel aside.

1. Remove the screws and the console finish panel.

1. Remove the left side console access panel.

1. Disconnect the transmission shift cable from the transmission selector arm.

1. Remove the transmission shift cable retaining clip from the floor shift mechanism through the console access.

1. Remove the four bolts retaining the floor shift mechanism to the floor.

1. Disconnect the floor shift mechanism wire harness connector.

1. Remove the floor shift mechanism from the console.

1. Remove the brake shift interlock actuator, parking brake release mechanism and harness.
   • Remove the wire harness retainers.
   • Remove the wire harness retainers.
   • Remove the two screws retaining the brake shift interlock assembly.
   • Remove the two screws retaining the parking brake controller.