VERACRUZ(EN) >2009 > G 3.8 DOHC > Automatic Transaxle System > Automatic Transaxle System > Troubleshooting>P0708 Transmission Range Sensor Circuit High Input  
Component Location

General Description
The Transaxle Range Switch sends the shift lever position information to the TCM(PCM) using hall-sensor signal.
The TCM(PCM) judges the shift lever position by reading all signals, for the Transaxle Range Switch, simultaneously.
DTC Description
The TCU set this code, When detected higher voltage than standard value from shift lever switch.
DTC Detecting Condition
Item
Detecting Condition
Possible cause
DTC Strategy
Check the voltage range
TCU
Enable Conditions
6V <Battery voltage <15.5V
System is normal
Threshold value
voltage of Position sensor 1, 2 > 4.87V
Diagnostic Time
More than 0.1sec × more than 2times
Fail Safe
Self learning control is inhibited
Locked in 3rd gear

Signal Waveform

Monitor Scantool Data
1.
Connect scantool to data link connector(DLC).
2.
Ignition "ON" & Engine "OFF".
3.
Monitor the "SELECT LEVER SWITCH and SHIFT GEAR POSITION" parameter on the scan tool.
4.
Shift selector lever from "P" range to "D" range.

5.
Does "TRANSAXLE RANGE SWITCH" follow the reference data?

▶ Fault is intermittent caused by poor contact in the sensor's and/or TCM(PCM)'s connector or was repaired and TCM(PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "Verification of Vehicle Repair" procedure.

▶ Go to "Terminal and connector inspection" procedure.

Terminal And Connector Inspection
1.
Many malfunctions in the electrical system are caused by poor harness and terminal condition. Faults can also be caused by interference from other electrical systems, and mechanical or chemical damage.
2.
Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
3.
Has a problem been found?

▶ Repair as necessary and go to "Verification of vehicle repair" procedure.

▶ Go to "Component Inspection" procedure.

Component Inspection
1.
Ignition "ON" & Engine "OFF".
2.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode.
3.
Using a scantool, Clear DTC.
4.
IG OFF ↔ IG ON (Repeat 2~3times),and then Monitor the "DTC"
5.
Is DTC Re-displayed?

▶ Substitute with a known-good PCM/TCM and check for proper operation. If the problem is corrected, replace PCM/TCM as necessary and then go to "Verification of Vehicle Repair" procedure.

▶ Fault is intermittent caused by poor contact in the sensor's and/or TCM(PCM)'s connector or was repaired andTCM(PCM) memory was not cleared. And Go to Component Inspection procedure.

NOTE)
When replacing the TCU, must perform the N position learning and the Initial learning. (refer to Troubleshooting's 'How to perform N position learning' and 'How to perform initial learning')
Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1.
Connect scan tool and select "Diagnostic Trouble Codes(DTCs)" mode
2.
Using a scantool, Clear DTC.
3.
Operate the vehicle within DTC Enable conditions in General information.
4.
Are you DTCs present?

▶ Go to the applicable troubleshooting procedure.

▶ System performing to specification at this time.