DTC P0500-31: Vehicle Speed Sensor "A" No Signal [11/2021 - 03/2024]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350, 2024 Lexus NX 350, 2023 Lexus NX 350, and 2022 Lexus NX 350. However, it is still accessible from the selected car via links, so may be relevant.
- READ VALUE USING GTS (VEHICLE SPEED)
- Drive the vehicle.
- Read the value displayed on the GTS.
Powertrain > Engine > Data List
Tester Display Vehicle Speed Result
Result Proceed to Values displayed on GTS and speedometer display not equal A Values displayed on GTS and speedometer display equal B
Result:
B
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS [11/2021 - ]
Result:
A
See step 2
- CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - ECM)
- Disconnect the combination meter assembly connector.
- Disconnect the ECM connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition D21-8 (+S) - A19-24 (SPD) Always Below 1 Ω Result
Proceed to OK NG
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
Result:
OK
See step 3
- CHECK COMBINATION METER SYSTEM
- Check the circuits that send vehicle speed signals to this system in the combination meter system.
Refer to Speed Signal Circuit [11/2021 - 03/2024]
Result
Proceed to NEXT
Result:
NEXT
See step 4
- Check the circuits that send vehicle speed signals to this system in the combination meter system.
- CLEAR DTC
- Clear the DTCs.
Powertrain > Engine > Clear DTCs
- Turn the ignition switch off and wait for at least 30 seconds.
Result
Proceed to NEXT
Result:
NEXT
See step 5
- Clear the DTCs.
- CONFIRM WHETHER MALFUNCTION HAS BEEN SUCCESSFULLY REPAIRED
- Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
- Read the DTCs.
Powertrain > Engine > Trouble Codes
HINT:
If no DTCs (no pending DTCs) are output to the GTS, the repair has been successfully completed.
Result
Proceed to NEXT
Result:
NEXT
END