MOHAVE/BORREGO(HM) > 2010 > G 3.
8 DOHC > PIC > Smart Key Unit > B1971 Parking
Position Input Error
B1971 Parking Position Input Error > General Information
Component inspection
General Description
Parking Position Switch indicates that Shift Lever is in P range or not.
Smartkey Module decides that engine starting is enable after receiving Parking Position Switch signal.
DTC Description
SMARTKEY Module sets DTC B1971 if vehicle speed is over 3km/h while parking switch signal is ON.
DTC Detecting Condition
Item Detecting Condition Possible cause
DTC Strategy • Check Voltage
Enable Conditions • After battery Voltage is energized to Smartkey Module • Poor Connection in harness
• After IGN ON, Vehicle speed is over 3km/h with brake switch • Faulty Parking Switch
Threshold value • Faulty Smartkey Module
ON for 10 seconds.
Failsafe •-
Diagnostic Circuit Diagram
B1971 Parking Position Input Error > Scantool Diagnostics
Monitor Scantool data
■ Check parking position switch status.
1. Connect scantool with diagnostic connector.
2. Check current data with scantool. .
3. Check "Shift lever P position" parameter on current data.
4. Check that data is appropriately changeable according to the shift lever position in P or others.
Specification : P position : ON, Not in P position : OFF.
5. Is the shift lever P position normal ?
▶ Check poor connection between harness connector and Parking Postion switch or Smartkey Module
: Thoroughly check the looseness, poor connection, bent, corrison, contamination, deformation or damage
of connector. Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.
▶ Go to " Inspection & Repair " procedure.
B1971 Parking Position Input Error > Inspection/Repair > W/Harness Inspection
Terminal and Connector Inspection
1. Many malfunctions in the electrical system are caused by poor harness and terminals.
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 check "signal circuit Inspection" procedure.
Signal Circuit Inspection
■ Check Signal Circuit
1. IG KEY OFF.
2. Disconnect parking position switch connector.
3. IG KEY ON.
4. Measure voltage between signal terminal of parking position switch harness connector and chassis ground.
Specification : Battery Voltage
5. Is the measured voltage within specification ?
▶ Check open in ground harness. And then, repair or replace as necessary, Finally go to "Verification of
Vehicle Repair " procedure.
▶ Check open or short to ground in signal harness. And then, repair or replace as necessary finally go to
"Verification of Vehicle Repair " procedure.
B1971 Parking Position Input Error > Inspection/Repair > Component Inspection
Component Inspection
■ Check Parking Position Switch
1. IG KEY OFF.
2. Disconnect Parking Position switch connector.
3. Measure resistance between one and the other connector when parking postion switch ON and OFF.
Specification : Measurement 1 : Infinite (∞), Measurement 2 : About below 1Ω
4. Is the measured resistance within specification ?
▶ Check poor connection between harness connector and Parking Postion switch or Smartkey Module
: Thoroughly check the looseness, poor connection, bent, corrison, contamination, deformation or damage
of connector.
Repair or replace as necessary and then, go to "Verification of Vehicle Repair" procedure.
▶ Substitute with a known-good parking position switch and check for proper operation.
If the problem is corrected, replace parking postion switch and then go to "Verification of Vehicle Repair"
procedure.
B1971 Parking Position Input Error > Verification of Vehicle Repair
Verification of Vehicle Repair
After a repair, it is essential to verify that the fault has been corrected.
1. Connect scantool and selet "Diagnostic Trouble Codes(DTCs)" mode and then clear DTC.
2. Operate the vehicle and monitor the DTC on the scantool.
3. Are any DTCs present?
▶ Go to the applicable troubleshooting procedure.
▶ System is performing to specification at this time.
B1971 Parking Position Input Error > 회로도 입력
Schematic Circuit Diagram
