Question about 1999 Chrysler Sebring

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Ecm has detected that the transmission input rpm does not match the transmission output rpm under known conditions

Tss error faulty iss

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Posted on Jan 02, 2017

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jsmes1027
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SOURCE: 1999 Chrysler Concorde LXI 3.2

This sounds as if the input and output speed sensors may be having an issue. If you are putting a used tcm in it will have been powered down and basically reset to it's defaults.Would completely disconnect the battery and hold the cable ends together this will force a hard reset of the tcm and ecm which will return all adaptives to the factory presets.When started it may run very poorly for a few minutes until it relearns. You then should be able to drive it and it will continue it's adaptive learning curve.

Posted on Dec 01, 2010

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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

2010 Malibu error codes po700,po716,po717


DTC P0700: Transmission Control Module (TCM) Requested MIL Illumination

Which one of these transmissions does your Malibu have ?
Automatic Transmission - 4T45-E
Automatic Transmission - 6T40/6T45
Automatic Transmission - 6T70/6T75

Do you know how to find out look at the VIN # ?
DTC P0716: Input Speed Sensor Performance
DTC P0717: Input Speed Sensor Circuit Low Voltage
The automatic transmission input speed sensor (ISS) is a permanent magnet with a coil of wire wound around. The ISS mounts in the case cover facing the reluctor wheel of the input shaft. As the reluctor wheel is driven by the turbine shaft, an AC signal is induced in the input speed sensor. Higher vehicle speeds induce a higher frequency and voltage at the sensor. There is a fixed air gap between the sensor and the teeth on the sensor reluctor wheel. The ISS input is used by the transmission control module (TCM) in order to control line pressure, torque converter clutch (TCC) apply and release, and transmission shift patterns. This sensor is also used to calculate the appropriate gear ratios and TCC slippage. This diagnostic indicates stuck, erratic, or intermittent conditions in the system.
Diagnostic Aids
• Road test the vehicle while monitoring the Transmission ISS parameter on the scan tool. The Transmission ISS parameter should vary with engine speed changes and not abruptly drop out.
• Inspect for an open or shorted AT ISS wire.
• Inspect for a disconnected AT ISS connector.
• Inspect for a faulty AT ISS.

Trouble Code P0717 Input speed sensor

Jan 19, 2017 | Cars & Trucks

1 Answer

I have a 1999 plymouth Breeze that was bringing up obd2 code p0700&p0715 ..got those to go away but now new code p0731 popped up what would be the causes of that code and how would I fix that?


- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

The ECM has detected that the transmission input RPM does not match the transmission output RPM under known conditions

Sep 26, 2015 | Plymouth Cars & Trucks

2 Answers

I have a trouble codes p0717 and p0700 on a 2006 Cadillac cts 3.6 the car shifts crazy and while pushing on the brake it locks up anyone know what's going on please help


P0717 is for the transmission input speed sensor , which inturn will bring up the other code P0700 for the Trans Control Module , so i would suggest having the codes cleared and see if they come back as sometimes a glitch can occour , if codes reappear and so do the symptoms i would replace the input speed sensor , it reads the primary pulley speed and sends info to the TCM and as far as i know there are no diagnostic s to carry out as this sensor either works properly or fails so get it changed and hope its not the TCM as well, keep me posted if you wish

Jul 30, 2015 | Cadillac Cars & Trucks

1 Answer

What does error code P0716 mean on a 2001 Volvo S80?


Trouble Code: P0716
Input Speed Sensor Performance
Possible Causes:


P0716 The TCM detects an unrealistic drop in input shaft speed. ISS DTC P0716 is not failed this ignition. Transmission input speed is 1,050 RPM or greater for 2 seconds. Transmission input speed drops 1,000 RPM for greater than 4 seconds and does not recover with in greater than 0.80 seconds.

Go to a Volvo mechanic for specific help, they will probably replace a faulty sensor.

Best of luck.

Jun 29, 2014 | 2001 Volvo S80

1 Answer

Whats ford windstar error codes p0715 mean


I hope this helps and is what your looking for... good luck

http://www.fordobdcode.com/p0715-ford

Ford P0715 OBD-II Trouble Code Definition:
P0715 Input Shaft Speed Sensor Circuit Malfunction
P0715 Ford OBD-II Trouble CodeDescription:
OBD Trouble Code P0715 Input/Turbine Speed Sensor "A" Circuit What does the code mean? OBD-ii Code P0715 definition:
The input speed sensor detects the primary pulley revolution speed and sends a signal to the Transmission Control Module (TCM) and Engine Control Module (ECM). Symptoms Sumptoms of OBD code P0715
- Engine Light ON (or Service Engine Soon Warning Light) - Possible shifting problems Causes Causes of the OBD-II code P0715
- Transmission speed sensor circuit is open or shorted. - Poor transmission speed sensor circuit connection - Faulty transmission speed sensor The Error code is generally activated on detection of the following conditions: Diagnostic Trouble Code (DTC) P0715 is detected when TCM or ECM does not receive the proper signal from the sensor. Solutions

Jun 22, 2014 | 1999 Ford Windstar

1 Answer

My 2000 Sephia will only shift gears manually from 1,2, then to drive. I get a code PO734. How do I fix and or slove this problem?


This is what your codes mean:

Trouble Code-P0734 (A/T Additional Gear Ratio Error In Fourth Gear)


Trouble Code Conditions:
Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 4th Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed.
Possible Causes:
  • Customer may complain of intermittent 4th gear operation
  • O/D and 2/4 pressures less than 75 psi
  • O/D or 2/4 clutch volume indexes out of specification
  • O/D accumulator seals are damaged
  • Transmission enters "limp in" mode running in 4th gear

Trouble Code-P0735 (A/T Gear Ratio Error Fourth Prime)

Trouble Code Conditions:
Vehicle driven any forward Gear, and the TCM detected the ratio of the Input speed to the Output Speed did not match the current Gear Ratio (this test can take up to 5 minutes).
Possible Causes:
  • Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent)
  • Transmission has internal problems or damage present
You have a transmission problem.Hope this helps, James Booth

May 17, 2011 | Kia Sephia Cars & Trucks

2 Answers

Code po734, po735


This is what your codes mean:

Trouble Code-P0734 (A/T Additional Gear Ratio Error In Fourth Gear)


Trouble Code Conditions:
Vehicle driven to a speed of 4-37 mph at more than 500 rpm, gear selector in 4th Gear in Drive, and the PCM detected too much difference in the engine speed and output shaft speed.

Possible Causes:

  • Customer may complain of intermittent 4th gear operation
  • O/D and 2/4 pressures less than 75 psi
  • O/D or 2/4 clutch volume indexes out of specification
  • O/D accumulator seals are damaged
  • Transmission enters "limp in" mode running in 4th gear

Trouble Code-P0735 (A/T Gear Ratio Error Fourth Prime)

Trouble Code Conditions:
Vehicle driven any forward Gear, and the TCM detected the ratio of the Input speed to the Output Speed did not match the current Gear Ratio (this test can take up to 5 minutes).

Possible Causes:

  • Related Gear Ratio trouble codes may be stored (note that some of these Gear Ratio trouble codes may be intermittent)
  • Transmission has internal problems or damage present
You have a transmission problem.

Jan 17, 2011 | 2003 Dodge Durango

1 Answer

I got engine code PO700 and PO733 on my 06 charger


P0733-GEAR RATIO ERROR IN 3RD

Theory of Operation
The Transmission Control Module (TCM) constantly calculates the transmission ratio based on the input speed sensor 1 and 2 (N2-N3) signals and the calculated output shaft speed. The intent of this diagnostic is to detect if the transmission is slipping or an invalid gear ratio is present.
  • When Monitored: Engine RPM greater than 450 RPM , output speed greater than 180 RPM , no N2 - N3 input speed sensor errors present, no gear selector lever errors present, no ABS system errors, and all wheel speeds above 450 RPM .
  • Set Condition: No shifting operation and detected gear is not the actual gear. No shifting operation - detected (calculated) gear is less than actual (expected) gear, no plausible gear is calculated, actual turbine speed - calculated turbine speed is greater than 300 RPM or calculated transmission ratio is above threshold. During an Upshift detected (calculated) gear is less than actual (expected) gear. During Downshift - detected (calculated) gear is less than actual (expected) gear.
Possible Causes
  • LOW TRANSMISSION FLUID
  • OTHER TRANSMISSION DTC's PRESENT
  • INTERNAL TRANSMISSION FAILURE
Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. See: Transmission Control Systems\Testing and Inspection\Procedures\NAG1 Automatic Transmission

Diagnostic Test
1. CHECK FOR OTHER TRANSMISSION DTC's
With the scan tool, check transmission DTC's
Are there any solenoid and/or solenoid supply voltage DTC's present?
YES >> Refer to the Transmission category and perform the appropriate symptom(s).
NO >> Go To 2 2. CHECK TRANSMISSION FLUID LEVEL
Check the transmission fluid level.
Is the fluid level correct?
YES >> Go To 3
NO >> Properly adjust the fluid level.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. See: Verification Tests\Transmission Verification Test 3. CHECK IF DTC IS CURRENT
With the scan tool, record the Environmental Data and erase Transmission DTC's. NOTE: If the TCM detects and stores a DTC, the TCM also stores the vehicles operating conditions under which the DTC originally set and is located in scan tool under Environmental Data. Before erasing any stored DTC's, record any available data to assist in duplicating the conditions in which the DTC originally set.

Using the Environmental Data recorded earlier, test drive the vehicle while trying to duplicate the conditions in which the DTC originally set.
Did the DTC P0733-GEAR RATIO ERROR IN 3RD reset?
YES >> Repair internal transmission as necessary.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. See: Verification Tests\Transmission Verification Test
NO >> Go To 4

4. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wiring and connectors while checking for any possible open or shorted circuits.
Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
Were there any problems found?
YES >> Repair as necessary.Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. See: Verification Tests\Transmission Verification Test
NO >> Test Complete.

Jun 04, 2009 | 2000 Dodge Durango

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