SOURCE: my service engine light is on got it checked it
DTC P0708 - Transmission Range Sensor Circuit High
Input
Check your transmission range sensor. There is a connector located where the cable
attaches to the tranny on the back (firewall side). Be sure its
connected and seated properly.
From what I understand the "range sensor" is basically the Input Turbine
Speed Sensor. Be sure the connector for this is also clean. This code is also set by the Nuetral Safety switch. Check the switch
with a multi meter to be sure its working properly.
Also, check your Engine Coolant Temperature Sensor. This sensor is used by
the PCM to help control tranny operations.
Also, can check this additional information for 1998 Saturn SL1...
DTC P0706
The PCM determines which gear is selected by a combination
of opens and grounds in circuits 771, 772, and 773 at the transaxle
park/neutral
position switch. Each combination indicates a specific
selection on the
manual shift quadrant, P, R, N, D, 2, or 3.
Circuit 776 is either open
or grounded to produce an even number of
grounded circuits, 771, 772,
773, and 776. Invalid data indicates
that the sum of the grounded
circuits 771, 772, 773, and 776, in 1
of the manual shift quadrants is
equal to an odd number.
Conditions for Setting the DTC
DTC P0706 is set when the PCM has
detected an invalid bit pattern for
more than 3.5 seconds, twice per
ignition cycle.
The difference between DTC P0706 and DTC P0705
is that a possible bit pattern error due to misadjustment could set a
DTC P0706.
Test Description
1. This step verifies the
conditions for DTC P0706 still exist.
2. If the shift cable or
switch is misadjusted, a DTC P0706 may set
while in certain gear
shift positions.
3. DTC P0706 may set due to 1 or more circuits
being shorted to
ground. By disconnecting the switch, the PCM should
read all circuits as high and the scan tool should display OPEN.
4. This step will isolate an open circuit. As each individual circuit
is grounded, the PCM/TCM should see the low signal and the tool should display INVALID.
5. The PCM/TCM supplies a 12 volt signal to each
transaxle park/neutral position switch circuit. This step tests for
that voltage.
6. DTC P0706 may have been set due to 1 of the
circuits being shorted
to voltage. This step verifies if a short to
voltage exists.
Repair Verification
Monitor DTC menu Code
Status for Pass Since Code Clear and Pass This Ignition Cycle. When
both have passed, the repair is verified.
Criteria for pass:
* No active DTC set.
* Two valid selector positions are decoded.
You must move the
shifter to obtain a pass.
Diagnostic Aids
When
the PCM detects a fault in the circuit, an open, ground, or short,
the PCM will open the circuit internally to protect the circuit.
If
no circuit problems can be detected, check the shift cable and switch
adjustment.
Important
Refer to the chart from DTC P0705.
This
DTC will cause the transaxle to start out in 2nd gear.
Hope helps (remember rated this).
SOURCE: I have a 2003 VW
use this webpage to view the fault code you have. It will explain in great detail along with a schematic
http://gearchatter.com/viewpost13540.php
P0700 Transmission Control System
P0701 Transmission Control System Range/Performance
P0702 Transmission Control System -Electrical
P0703 Torque Converter/Brake Switch B Circuit
P0704 Clutch Pedal Position Switch -Circuit Malfunction
P0705 Transmission Range Sensor/Switch Circuit Malfunction (PRNDL Input)
P0706 Transmission Range Sensor/Switch Circuit Range/Performance
P0707 Transmission Range Sensor/Switch Circuit Low Input
P0708 Transmission Range Sensor/Switch Circuit High Input
P0709 Transmission Range Sensor/Switch Circuit intermittent
P0710 Transmission Fluid Temperature Sensor Circuit
P0711 Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712 Transmission Fluid Temperature Sensor Circuit Low Input
P0713 Transmission Fluid Temperature Sensor Circuit High Input
P0714 Transmission Fluid Temperature Sensor Circuit Intermittent
P0715 Input/Turbine Speed Sensor Circuit
P0716 input/Turbine Speed Sensor Circuit Range/Performance
P0717 Input/Turbine Speed Sensor Circuit No Signal
P0718 Input/Turbine Speed Sensor Circuit Intermittent
P0719 Torque Converter/Brake Switch B Circuit Low
P0720 Output Shaft Speed Sensor Circuit
P0721 Output Shaft Speed Sensor Circuit Range/Performance
P0722 Output Shaft Speed Sensor Circuit No Signal
P0723 Output Shaft Speed Sensor Circuit Intermittent
P0724 Torque Converter/Brake Switch B Circuit High
P0725 Engine RPM Input Circuit
P0726 Engine RPM Input Circuit Range/Performance
P0727 Engine RPM Input Circuit No Signal
P0728 Engine RPM Input Circuit Intermittent
P0729 Gear 6 Incorrect Ratio
P0730 Incorrect Gear Ratio
P0731 Gear 1 Incorrect Ratio
P0732 Gear 2 Incorrect Ratio
P0733 Gear 3 Incorrect Ratio
P0734 Gear 4 Incorrect Ratio
P0735 Gear 5 Incorrect Ratio
P0736 Reverse Incorrect Ratio
P0737 TCM Engine Speed Output Circuit
P0738 TCM Engine Speed Output Circuit Low
P0739 TCM Engine Speed Output Circuit High
P0740 Torque Converter Clutch Solenoid Circuit
P0741 Torque Converter Clutch Solenoid Circuit Performance or Stuck Off
P0742 Torque Converter Clutch Solenoid Circuit Stuck On
P0743 Torque Converter Clutch Solenoid Circuit Electrical
Now i dont know a lot about automatics especially modern ones with all this fancy electronics thats used nowdays but i think its a fault with the temperature sensor for the gearbox.But where its located and what it looks like i have no idea it could even be mounted inside the gearbox .Sorry not a very good answer from a mechanic but?? very few of our europeon cars come with auto transmission .Evan when i do know whats wrong i cannot buy the parts for the gearbox as only re-con boxes supplied by the dealer so best advice is to try a specialist in auto box repairs only .PS some of my best students when i used to teach mechanics many moons ago were the girls so no excuses like iam only a girl please
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