Dodge Dakota (R1). Manual — part 134
Symptom List:
P0500-VEH. SPEED SENSOR PEC FREQUENCY TOO HIGH
P0500-VEH. SPEED SENSOR PLAUSIBILITY
P0500-VEH. SPEED SENSOR SRC HIGH EXCEEDED
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P0500-VEH. SPEED SENSOR
PEC FREQUENCY TOO HIGH.
When Monitored and Set Condition:
P0500-VEH. SPEED SENSOR PEC FREQUENCY TOO HIGH
When Monitored:
With the engine running.
Set Condition:
The ECM detects a vehicle speed greater than 220 km/h (137 MPH).
P0500-VEH. SPEED SENSOR PLAUSIBILITY
When Monitored:
With the engine running.
Set Condition:
The ECM compares the amount of fuel the fuel quantity actuator is
delivering to the vehicle speed from the vehicle speed sensor (VSS). The VSS indicates a
vehicle speed that cannot be achieved with the present amount of fuel being delivered.
P0500-VEH. SPEED SENSOR SRC HIGH EXCEEDED
When Monitored:
With the engine running.
Set Condition:
The ECM detects a vehicle speed greater than 220 km/h (137 MPH).
POSSIBLE CAUSES
VEHICLE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND
POWERTRAIN CONTROL MODULE - 5-VOLT SUPPLY HIGH
POWERTRAIN CONTROL MODULE - AFTER 5-VOLT SUPPLY SHORTED TO VOLTAGE
REPAIR THE 5-VOLT SUPPLY CIRCUIT AND CHECK THE PCM
INTERMITTENT CONDITION
5-VOLT SUPPLY CIRCUIT OPEN
POWERTRAIN CONTROL MODULE - SHORTED TO VOLTAGE
SPEEDOMETER PINION AND DRIVE TEETH DAMAGED
VEHICLE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO 5-VOLT SUPPLY CIRCUIT
5-VOLT SUPPLY CIRCUIT SHORTED TO GROUND
ENGINE CONTROL MODULE - SHORTED TO VOLTAGE
VEHICLE SPEED SENSOR SIGNAL CIRCUIT OPEN
5-VOLT SUPPLY CIRCUIT SHORTED TO SENSOR GROUND
71
DRIVEABILITY - DIESEL
POSSIBLE CAUSES
VEHICLE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
VEHICLE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
POWERTRAIN CONTROL MODULE - 5-VOLT SUPPLY CIRCUIT LOW
SENSOR GROUND CIRCUIT OPEN
VEHICLE SPEED SENSOR
ENGINE CONTROL MODULE - INTERNAL FAULT
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, erase ECM DTCs.
Test drive the vehicle.
With the DRB, read ECM DTCs.
Did this DTC reset?
All
Yes
→
No
→
2
Turn the ignition off.
Remove the Vehicle Speed Sensor.
Inspect the Speedometer Pinion and drive teeth on the Output Shaft (located in the
transmission).
Are both components OK?
All
Yes
→
No
→
Repair or replace the Speedometer Pinion or internal components
as necessary in accordance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
3
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Check connectors - Clean/repair as necessary
Turn the ignition on.
Measure the voltage of the 5-volt Supply circuit in the Vehicle Speed Sensor harness
connector.
Is the voltage between 4.8 and 5.5 volts?
All
Yes
→
Above
Below
4
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Vehicle Speed Sensor Signal circuit.
Is the voltage above 5.5 volts?
All
Yes
→
No
→
72
DRIVEABILITY - DIESEL
P0500-VEH. SPEED SENSOR PEC FREQUENCY TOO HIGH —
Continued
TEST
ACTION
APPLICABILITY
5
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Turn the ignition on.
Measure the voltage of the Vehicle Speed Sensor Signal circuit.
Is the voltage above 5.5 volts?
All
Yes
→
No
→
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
6
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between ASD/Diesel Power Relay cavities 30 and 87 (in PDC).
Turn the ignition on.
Measure the voltage of the Vehicle Speed Sensor Signal circuit.
Is the voltage above 5.5 volts?
All
Yes
→
No
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
7
If there are no possible causes remaining, view repair.
All
Repair
Repair the Vehicle Speed Sensor Signal circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
8
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the PCM C1 and C2 harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between the Vehicle Speed Sensor Signal circuit and the
5-volt Supply circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Vehicle Speed Sensor Signal circuit for a short to the
5-volt Supply circuit.
Perform ROAD TEST VERIFICATION - VER-2.
9
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Vehicle Speed Sensor Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Vehicle Speed Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
73
DRIVEABILITY - DIESEL
P0500-VEH. SPEED SENSOR PEC FREQUENCY TOO HIGH —
Continued
TEST
ACTION
APPLICABILITY
10
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance between ground and the Vehicle Speed Sensor Signal circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Vehicle Speed Sensor Signal circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
11
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Note: Check connectors - Clean/repair as necessary.
Measure the resistance of the Vehicle Speed Sensor Ground circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Vehicle Speed Sensor Ground circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
12
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
NOTE: Ensure the ECM and PCM harness connectors are connected before
continuing.
Turn the ignition on.
Connect a jumper wire to the Vehicle Speed Sensor Signal circuit in the VSS harness
connector.
With the DRB, monitor the VEHICLE SPEED while tapping the other end of the
jumper wire to ground.
Does the DRB display km/h (MPH) greater than 0?
All
Yes
→
Replace the Vehicle Speed Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
13
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the PCM harness connectors.
Check connectors - Clean/repair as necessary
Measure the resistance between the Vehicle Speed Sensor Signal circuit and the
Sensor Ground circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Vehicle Speed Sensor Signal circuit for a short to the
Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
14
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
74
DRIVEABILITY - DIESEL
P0500-VEH. SPEED SENSOR PEC FREQUENCY TOO HIGH —
Continued
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