hello, having trouble with this code replaced the tran computer under the dash, replaced the main computer with a reman from cardon, replaced the nss switch thats new also.still starts in any gear and throws the code 705.and if i unplug the nss it will still start.i'm running out of time with this.thanks for any info.

 

iam having the same issue and in the process of checking harness for ba ground if you have any luck let me know and i will let you know about my luck

 

P0705 has many possible faults. Short of inspecting all the wiring and connectors associated with the Transmission Range Sensor (NSS), there's alot of diagnostics that needs to be accomplished using a DRB III tool. The only thing I could recommend is to take it to a shop (dealer) that has a DRB III tool and the diagnostic procedures and have them check it out.

Here's a bit about P0705:

P0705-RANGE SENSOR

When Monitored: Continuously with the key on.

Set Condition: No Transmission Range Sensor signals are received or two conflicting signals are received from the Transmission Range Sensor at the same time by the TCM.

Possible Causes:

PCM PARK/NEUTRAL DTC’S PRESENT
INTERMITTENT WIRING AND/OR CONNECTORS
FUSED IGNITION SWITCH OUTPUT OPEN OR HIGH RESISTANCE (see below)
TRS 1-2 SENSE CIRCUIT OPEN
TRS 3 SENSE CIRCUIT OPEN
TRS OVERDRIVE SENSE CIRCUIT OPEN
TRS REVERSE SENSE CIRCUIT OPEN
TRS 1-2 SENSE CIRCUIT SHORTED TO GROUND
TRS 3 SENSE CIRCUIT SHORTED TO GROUND
TRS OVERDRIVE SENSE CIRCUIT SHORTED TO GROUND
TRS REVERSE SENSE CIRCUIT SHORTED TO GROUND
TRS 1-2 SENSE CIRCUIT SHORTED TO VOLTAGE
TRS 3 SENSE CIRCUIT SHORTED TO VOLTAGE
TRS OVERDRIVE SENSE CIRCUIT SHORTED TO VOLTAGE
TRS REVERSE SENSE CIRCUIT SHORTED TO VOLTAGE
TRANS RANGE SENSOR-SENSE CIRCUIT
TCM-TRS SENSE CIRCUIT INPUTS


FUSED IGNITION SWITCH OUTPUT OPEN OR HIGH RESISTANCE
For this one, you could check fuse #10, 15 amp, in the Junction Block (JB), located in the passenger footwell. If you have a 2000 XJ Owner's Manual, there's a guide to fuse locations in it that will show the location of #10. If it say "empty", disregard, and look in the fuse panel, it should be there. Not saying this is the fix, but it deserves checking. If you can't find the fuse let us know.


Another thing you may want to check is the ground point for the PCM and the TCM; it's located on the right side of the engine block, near the alternator. There should be two studs on the block in this location with several wires connected there, including the battery. First, check the wires at these studs for security, then remove them and clean the wire ring terminals well and reattach them. Next, check the ground point for the Transmission Range Sensor (NSS). It's located on the left inner fender, next to the PCM, and under the wiring harnesses there. There will be two screws holding several wires to the fender. Repeat the security check/cleaning process like at the other ground point for the PCM and TCM.

 

Did you check the NSS harness plug carefully for a jumper some prev. owner may have slapped in there? Not sure how long you've owned it or what year it is.

 

If it will help, here's the 2000 XJ TRS and TCM pinouts and a diagram of the TRS circuit.

 

up date on the 705 code checked all the grounds and cleaned them checked the fueses.plugged in unplugged it doesn't matter it still starts in any gear ,its like the nss isn't even there, somebody had to have had there hands in this. 4th call to identafix.at least its free now.