P0500-Vehicle Speed Sensor Frequency Too High; P0500-Vehicle Speed Sensor High Level Duration; P0500-Vehicle Speed Sensor Plausibility; P0500-Vehicle Speed Sensor Signal Voltage Too High - DaimlerChrysler Jeep Grand Cherokee 2002 Service Manual

DRIVEABILITY - DIESEL
Symptom List:

P0500-VEHICLE SPEED SENSOR FREQUENCY TOO HIGH

P0500-VEHICLE SPEED SENSOR HIGH LEVEL DURATION

P0500-VEHICLE SPEED SENSOR PLAUSIBILITY

P0500-VEHICLE SPEED SENSOR SIGNAL VOLTAGE TOO HIGH

Test Note: All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0500-VEHICLE SPEED SEN-
SOR FREQUENCY TOO HIGH.
When Monitored and Set Condition:
P0500-VEHICLE SPEED SENSOR FREQUENCY TOO HIGH
When Monitored: With the engine running.
Set Condition: The ECM detects a vehicle speed greater than the vehicle is capable.
P0500-VEHICLE SPEED SENSOR PLAUSIBILITY
When Monitored: With the engine under load and engine speed greater than 2400 RPM
while vehicle speed is below 20 km/h (12 MPH).
Set Condition: The ECM compares the amount of fuel the fuel injectors are delivering to
the vehicle speed from the VSS. The VSS indicates a vehicle speed that cannot be achieved
with the present amount of fuel being delivered.
P0500-VEHICLE SPEED SENSOR SIGNAL VOLTAGE TOO HIGH
When Monitored: With the engine running.
Set Condition: The ECM detects a vehicle speed greater than 220 km/h (137 MPH).
INTERMITTENT CONDITION
CHECK FOR RELATED CONTROLLER ANTILOCK BRAKES DTCS
CONTROLLER ANTILOCK BRAKE MODULE
VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO GROUND
VEHICLE SPEED SIGNAL CIRCUIT SHORTED TO VOLTAGE
VEHICLE SPEED SIGNAL CIRCUIT OPEN
ENGINE CONTROL MODULE - NO VOLTAGE
ENGINE CONTROL MODULE - NO VOLTAGE CHANGE
ENGINE CONTROL MODULE - VOLTAGE TOO HIGH
POSSIBLE CAUSES
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