Dodge Dakota (R1). Manual — part 164
Symptom:
*CHECKING THE TURBOCHARGER OPERATION
POSSIBLE CAUSES
CHECKING THE TURBOCHARGER HOSES
CHECKING THE WASTEGATE HOSE
TURBOCHARGER
WASTEGATE ACTUATOR ARM OPERATION
WASTEGATE RESTRICTION
TEST
ACTION
APPLICABILITY
1
NOTE: The exhaust system must be free from any restriction to perform this
test.
Check the turbocharger outlet hose between the turbocharger and the intake
manifold and the turbocharger inlet hose between the turbocharger and the air
cleaner for loose connection, damage or restriction.
Are any of these conditions evident?
All
Yes
→
Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
2
Check the wastegate actuator supply hose for loose connection, damage or restriction.
Are any of these conditions evident?
All
Yes
→
Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
3
Disconnect the Wastegate Actuator Supply Hose from the intake manifold.
Using an air pressure regulator, connect an air hose to the disconnected end of the
Wastegate Actuator Supply Hose.
Start at 0 kPa (0 PSI) and slowly increase air pressure to 310 kPa (45 PSI) while
monitoring the Wastegate Actuator Arm.
NOTE: The Wastegate Actuator Arm should remain closed until air pressure
reaches 117-138 kPa (17-20 PSI) and fully open when the air pressure
reaches 234-276 kPa (34-40 PSI).
Did the Wastegate Actuator unseat and fully open as described?
All
Yes
→
No
→
191
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
4
Connect an air pressure gauge in-line with the Wastegate Actuator Supply Hose.
NOTE: Air pressure gauge must be rated above 276 kPa (40 PSI).
NOTE: The vehicle must be on flat level ground to perform this test. Failure
to drive vehicle on flat level ground could result in incorrect boost pressure
readings.
NOTE: FIRST GEAR - The following numbers are a comparison of Boost
Pressure and Engine Speed (PSI/RPM) for the First Gear test: 21 kPa (3
PSI)/1500rpm - 28 kPa (4 PSI)/2000rpm - 48 kPa (7 PSI)/2500rpm - 69 kPa (10
PSI)/3000rpm - 90 kPa (13 PSI)/3500rpm
NOTE: SECOND GEAR - The following numbers are a comparison of Boost
Pressure and Engine Speed (PSI/RPM) for the Second Gear test: 28 kPa (4
PSI)/1500rpm - 28 kPa (4 PSI)/2000rpm - 48 kPa (7 PSI)/2500rpm - 76 kPa (11
PSI)/3000rpm - 97 kPa (14 PSI)/3500rpm
Test drive the vehicle in First gear. Increase engine RPM in 500 RPM increments
slowly until engine speed is 3500 RPM. Note the Air Pressure Gauge reading at each
500 RPM increment. Repeat this step with the vehicle in Second Gear.
Compare the two sets of readings to the appropriate GEAR NOTE.
Do the Air Pressure Gauge readings match the values indicated in the NOTE ± 14
kPa (2 PSI)?
All
Yes
→
Test Complete.
No
→
Replace the Turbocharger Assembly in accordance with the Ser-
vice Information.
Perform ROAD TEST VERIFICATION - VER-2.
5
Remove the E-clip and disconnect the Wastegate Actuator Rod from the Wastegate
Actuator Arm.
Manually move the Wastegate Actuator Arm from closed to fully open.
Does the Wastegate Actuator Arm move easily without restriction?
All
Yes
→
Replace the Wastegate Actuator in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Clean Wastegate Actuator Arm or Wastegate Actuator Shaft as
necessary. If OK, replace Turbocharger Assembly in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
192
DRIVEABILITY - DIESEL
*CHECKING THE TURBOCHARGER OPERATION —
Continued
Symptom:
*CHECKING THE VEHICLE SPEED SIGNAL
POSSIBLE CAUSES
VEHICLE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO SENSOR GROUND
CHECK FOR VSS DTC
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
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
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, select Engine, JTEC then Sensors.
Note the Vehicle Speed reading on the DRB while test driving the vehicle.
Does the DRB display an accurate vehicle speed reading?
All
Yes
→
Test Complete.
No
→
2
Turn the ignition on.
With the DRB, read ECM DTCs.
Are any VSS DTCs present?
All
Yes
→
Refer to symptom list for problems related to VSS DTCs.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
193
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
3
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.
4
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
5
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
→
6
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.
194
DRIVEABILITY - DIESEL
*CHECKING THE VEHICLE SPEED SIGNAL —
Continued
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст