Question about 2002 GMC Envoy

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Transmission burn all harness on top of transmission was burn (touch by fire) the transmission clutch was burn.harness of the speed sensor was burn,oxygene sensor ,they change 4X4 module transfert case moduleetc..the transmission should be replace. If the transmission harness was burn and all parts i write upper,What can be burn transmission ?The pipe for cooling leaking (rust) and put fire on right side but the fire burn all engine harness and transmission harness

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If i understand correctly, your questions is why the transmission should be replaced. well if your main harness was burned chances are if it got that hot that it burned the clutch, then it cooked tyhe oil in the trans mission and melted the seals and most likely warped the gear train inside the transmission

Posted on May 12, 2009

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Posted on Jan 02, 2017

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Can the input speed sensor on a 2009 GMC Acadia be changed without having to remove the transmission


Did you do the diagnostic's that go to that code ?
DTC P0717: Input Speed Sensor Circuit Low Voltage
Diagnostic Fault Information
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
Input Speed Sensor Supply Voltage
P0717
P0717
--
P0716
Input Speed Sensor Signal
P0716, P0717
P0716, P0717
P0716, P0717
P0716
Circuit/System Description
The input speed sensor (ISS) is a hall-effect type sensor. The sensor faces the 1-2-3-4 and 3-5-R clutch housing machined teeth surface. The sensor receives 8.3-9.3 volts on the input/output speed sensor (ISS/OSS) supply voltage circuit from the transmission control module (TCM). As the 1-2-3-4 and 3-5-R clutch housing rotates, the sensor produces a signal frequency based on the machined surface of the 1-2-3-4 and 3-5-R clutch housing. This signal is transmitted through the ISS signal circuit to the control solenoid (w/body and TCM) valve assembly. The control solenoid (w/body and TCM) valve assembly uses the ISS signal to determine line pressure, transmission shift patterns, torque converter clutch (TCC) slip speed and gear ratio.

Circuit/System Verification
Engine idling, observe the scan tool Transmission ISS parameter while varying the engine speed. The Transmission ISS parameter should change with the engine speed and not drop out.
Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Ignition OFF, remove the control valve body cover. Refer to Control Valve Body Cover Replacement.
Connect the TCM harness connector.
Disconnect the input speed sensor (ISS) from the control solenoid (w/body and TCM) valve assembly.
Connect the J 38522 between the supply voltage terminal B and ISS signal terminal A at the control solenoid (w/body and TCM) valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly Input Shaft Speed/Output Shaft Speed Input Test for further instructions.
Set the J 38522 signal to 8 volts, the frequency to 120 and the percent duty cycle to 50.
Ignition ON, observe the scan tool Transmission ISS parameter. The scan tool Transmission ISS parameter should be between 100-400 RPM.
? If not within the specified range, replace the control solenoid (w/body and TCM) valve assembly.
If all circuits test normal, test or replace the input speed sensor.

Control Valve Body Cover Replacement

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.
Remove the oil cooler inlet hose (1) from the retainer on the control valve body cover.
Remove the oil cooler outlet hose retainer nut (5) from the control valve body cover.
Remove the oil cooler outlet hose (4) from the retainer on the control valve body cover.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
Remove the left engine splash shield. Refer to Engine Splash Shield Replacement.
Drain the transmission. Refer to Transmission Fluid Replacement.

you don't need to pull thr trans .

Feb 19, 2017 | GMC Cars & Trucks

1 Answer

Where is the 2008 scion tc intermediate Shaft Speed Sensor located? thanks.


you are looking for Transmission revolution sensor NC (speed sensor NC). its under the battery and air cleaner assembly on top of the transmission. advise it could be the harness or ECM

Nov 22, 2016 | 2008 Scion Tc

2 Answers

My 1996 Toyota Avalon was making a knocking sound while driving on the freeway then stalled the engine will not come back on it just makes a clicking sound and the code reads p1705


That code relates to the transmission:
It's the sensor that sits directly on top of the transmission case.. Easy fix.
This sensor detects the rotation speed of the direct clutch drum.
By comparing the direct clutch speed signal with the vehicle
speed sensor signal, the ECM detects the shift timing of the
gears and appropriately controls the engine torque and hydraulic
pressure in response to various conditions, thus performing
smooth gear shifting.
DTC No. DTC Detecting Condition Trouble Area
P1705
The ECM detects conditions (a), (b), (c), (d), (e) and (f) continuity
for 4 secs. or more.
(2?trip detection logic)
(a) Vehicle speed : 32 km/h (20 mph) or more
(b) 3rd or 4th gear
(c) NC2 < 300 rpm
(d) Park/neutral position switch: OFF
(e) Solenoid valves and vehicle speed sensor are normal
(f) L position: OFF
 Open or short in direct clutch speed sensor circuit
 Direct clutch speed sensor
ECM
WIRING DIAGRAM
DI02P?03


according to this site:
Error code P1705

It's not why your car won't start.

Mar 09, 2016 | Toyota Cars & Trucks

1 Answer

Where is the speed sensors located on a 2001 Tahoe


Vehicle Speed Sensor (VSS) - Allison
On the left side of the transmission
Automatic Transmission Electronic Component Views in Automatic Transmission - Allison
Automatic Transmission Inline Harness Connector End View in Automatic Transmission - Allison
Vehicle Speed Sensor (VSS) - 4L60-E
On the left side of the transmission
Automatic Transmission Electronic Component Views in Automatic Transmission - 4L60-E
Automatic Transmission Related Connector End Views in Automatic Transmission - 4L60-E
Vehicle Speed Sensor (VSS) - 4L80-E
On the left side of the transmission
Automatic Transmission Electronic Component Views in Automatic Transmission - 4L80-E
Automatic Transmission Related Connector End Views in Automatic Transmission - 4L80-E
Vehicle Speed Sensor (VSS) - Transfer Case
On the top left side of the transfer case
Transfer Case Control Component Views in Transfer Case - NVG 246 - NP8 (Two Speed Automatic)
Transfer Case Control Connector End Views in Transfer Case - NVG 246 - NP8 (Two Speed Automatic)
Vehicle Speed Sensor (VSS) Adapter (4WD Only) - 4.8L,5.3L,6.0L
On the left side of the transmission
Engine Controls Component Views in Engine Controls - 4.8L,5.3L,6.0L
Engine Controls Connector End Views in Engine Controls - 4.8L,5.3L,6.0L
Vehicle Speed Sensor (VSS) Adapter (4WD Only) - 8.1L
On the left side of the transmission

Mar 07, 2016 | Cars & Trucks

1 Answer

I have a1999 cougar the speed on stop working now the transmission will not shift in less you manual shift your self what could be the problem


The speedometer stopped working ? is this what you meant ? You probably have a bad VSS - vehicle speed sensor . The VSS is an input to the PCM - engine computer , besides being a signal for the speedometer it is used for shift control and other thing's .
Vehicle Speed Sensor The vehicle speed sensor (VSS) (Figure 43) is a variable reluctance or Hall-effect sensor that generates a waveform with a frequency that is proportional to the speed of the vehicle. If the vehicle is moving at a relatively low velocity, the sensor produces a signal with a low frequency. As the vehicle velocity increases, the sensor generates a signal with a higher frequency. The PCM uses the frequency signal generated by the VSS (and other inputs) to control such parameters as fuel injection, ignition control, transmission/transaxle shift scheduling and torque converter clutch scheduling. You could possibly have a DTC stored in the PCM.
P0500 - Vehicle Speed Sensor (VSS) Malfunction Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). If the engine rpm is above the torque converter stall speed (automatic transmission) and engine load is high, it can be inferred that the vehicle must be moving. If there is insufficient vehicle speed data input, a malfunction is indicated and a DTC is set. On most vehicle applications the malfunction indicator lamp (MIL) will be triggered when this DTC is set.
  • Open in VSS+/VSS- harness circuit.
  • Open in TCSS signal or TCSS signal return harness circuit.
  • Short to GND in VSS harness circuit.
  • Short to GND in TCSS harness circuit.
  • Short to PWR in VSS harness circuit.
  • Short to PWR in TCSS harness circuit.
  • Open or short in the vehicle speed circuit(s) (VSC) between the PCM and appropriate control module.
  • Damaged VSS or TCSS.
  • Damaged wheel speed sensors.
  • Damaged wheel speed sensor harness circuits.
  • Damage in module(s) connected to VSC/VSS circuit.
  • Damage drive mechanism for VSS or TCSS.
Diagnostic Aids: - Monitor VSS PID while driving vehicle. This DTC is set when the PCM detects a sudden loss of VSS signal over a period of time. If vehicle speed data is lost, check source of where vehicle speed signal originates. Note TCSS does not have a PID, circuitry frequency must be checked for sudden loss of sensor signal. P0501 - Vehicle Speed Sensor (VSS) Range/ Performance Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. This DTC is set the same way as P0500, however the malfunction indicator lamp (MIL) is not triggered.
  • Refer to possible causes for P0500.
Refer to diagnostic aids for P0500.

Oct 26, 2015 | Cars & Trucks

1 Answer

Nissan 350 z p1762 code


P1762 Nissan - Direct Clutch Solenoid Valve Possible causes
- Faulty Direct Clutch Solenoid Valve
- Direct Clutch Solenoid Valve harness is open or shorted
- Direct Clutch Solenoid Valve circuit poor electrical connection
P1762 Nissan Description
Direct clutch solenoid valve is controlled by the Transmission Control Module (TCM) in response to signals sent from the PNP switch, vehicle speed sensor and accelerator pedal position sensor (throttle position sensor). Gears will then be shifted to the optimum position.

Dec 07, 2013 | Cars & Trucks

1 Answer

2007 Kia Optima 2.4L After swapping the motor and transmission stopped engaging. Transmission was working perfectly before motor swap. Transmission fluid has been changed and topped off. Decided to push...


code p0700 refers to transmission control system /MIL --malfunction===causes ---wiring---TCM( transmission control module
code p 0731 refers to ear 1 --incorrect ratio====causes wiring---TR sensor /switch---shift solenoids---transmission mechanicak fault
as the work was done in the area that transmission harness wires would have been moved, I would suggest checking that all of the harness connections have been properly connecyed , no wires damaged or broken as a first action rhen move onto the cheapest units and check them for correct operation
I would also be looking at the torque converter clutch solenoid/servo action first as if that is not operational ( possible wires and connections ) nothing else in the box will work and that could indicate that the torque converter to flexi plate bolts are missing

May 22, 2017 | Cars & Trucks

1 Answer

I have a 2001 ford escape 2.0 L 4 Cyl with 5 speed Manual Transmission. Recently had the clutch replaced with in a week the speedometer would be eratic but not all the time then after about a month on...


Definitely not an expert here, but exactly the same symptoms after a clutch replacement. I found one of the wires going to the connector on the harness side of the Vehicle Speed Sensor pulled in two. Can only surmise that during the clutch installation this connector wasn't disconnected and during movement of the transmission to get to the clutch was put under tension causing the failure. I haven't confirmed the solution yet, but pretty sure I'm on the right track.

Sep 12, 2012 | 2001 Ford Escape

1 Answer

Transmission slipping, max speed 25mph


1) Check fluid level (warm), is it correct? If not, add fluid.
2) Is the fluid dark and/or have burned odor? If yes, you probably have burned/damaged friction clutches. Check for material in bottom of pan.
3) Any codes present in PCM? If so, post here if you need them interpreted. Don't skip this step! Transmission is electronically controlled. If problem is in the controls (pcm, wiring, connector, switches, sensors, etc.) then even installation of a new transmission will have same problem.
4) If fluid level and fluid condition are good, no codes and all wiring harnesses firmly attached then you could have a problem with pressure sensor, even tough no code set. However, it's most likely either hydraulic or clutch issues.

Do not try to fix with a "pour-in" additive! They not only do not/cannot work but they just rob you of good money and at times create more problems. There's only one additive to put into a transmission for certain complaints, but there's no additive to fix a slipping condition.

If you find this solution helpful, then please take a moment to rate this post. - Thanks.

May 19, 2010 | 1997 Ford Econoline

1 Answer

2001 Chrysler PT Cruiser No start - No fire Ciodes p0320 & p0340


FIRST THING IS TO LOOK OVER THE WIRING HARNESS REAL GOOD. THE MAIN PROBLEM WITH NOT MOUNTING IT BACK WOULD BE THEHARNESS RUBBING ON BLOCK WHICH WOULD SHOW PHYSICAL SIGNS..IF YOU DID REPLACE THE CAM AND CRANK SENSOR MAKE SURE THEY ARE OEM ONLY..AFTER REPLACING PARTS AND CLEARING THE CODES WHAT CODE IF ANY NOW SHOWS UP AFTER CRANKING THE CAR...IF SAME CODE TIM ETO SUSPECT THE PCM.. POWER CONTROL MODULE.. MAIN BRAIN..NOT GOOD LET ME KNOW

Apr 24, 2010 | 2001 Chrysler PT Cruiser

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