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Symptom:
P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (MANUAL
TRANS)
When Monitored and Set Condition:
P0501-VEHICLE SPEED SENSOR #1 PERFORMANCE (MANUAL TRANS)
When Monitored: With the engine running. Clutch not depressed. Engine rpm greater
than 1500.
Set Condition: The PCM does not receive a vehicle speed sensor signal for more than 11
seconds. 2 consecutive trips.
VEHICLE SPEED SENSOR OPERATION
(K7) 5 VOLT SUPPLY CIRCUIT OPEN
(G7) VSS SIGNAL CIRCUIT SHORTED TO GROUND
(G7) VSS SIGNAL CIRCUIT OPEN
PCM VSS SIGNAL
(K4) SENSOR GROUND CIRCUIT OPEN
VEHICLE SPEED SENSOR
TEST
1
Raise the drive wheels off the ground.
WARNING: BE SURE TO KEEP HANDS AND FEET CLEAR OF ROTATING
WHEELS.
Start the engine.
With the DRBIII , monitor the Vehicle Speed Sensor
Place the transmission in any forward gear.
Allow the wheels to rotate.
Does the DRBIII display vehicle speed above 0 MPH/KMH?
Yes → Refer to the INTERMITTENT CONDITION symptom in the
No
2
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Turn the ignition on.
Measure the voltage of the (K7) 5 Volt Supply circuit in the VSS harness connector.
Is the voltage above 4.6 volts?
Yes → Go To 3
No
POSSIBLE CAUSES
ACTION
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
→ Go To 2
→ Repair the (K7) 5 Volt Supply circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 5 - NGC.
DRIVEABILITY - NGC
417
APPLICABILITY
All
All
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