Dodge Dakota (R1). Manual — part 163
TEST
ACTION
APPLICABILITY
8
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance between ground and Vehicle Speed Sensor harness connector
cavities 1, 2, and 3.
Is the resistance above 100 kohms on each circuit?
All
Yes
→
No
→
Repair the circuit that measured below 100 kohms for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
9
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance between VSS harness connector cavity 1 and cavities 2 and
3, then between cavity 2 and 3.
Is the resistance above 100 kohms for each measurement?
All
Yes
→
No
→
Repair the circuit that measured below 100 kohms for a short
together.
Perform ROAD TEST VERIFICATION - VER-2.
10
Turn the ignition off.
Disconnect the PCM harness connectors.
Disconnect the Vehicle Speed Sensor harness connector.
Measure the resistance of the Vehicle Speed Sensor Signal circuit.
Measure the resistance of the Vehicle Speed Sensor Ground circuit.
Is the resistance below 5.0 ohms for each measurement?
All
Yes
→
No
→
Repair the circuit that measured above 5.0 ohms for an open.
Perform ROAD TEST VERIFICATION - VER-2.
11
If there are no possible causes remaining, view repair.
All
Yes
→
Replace the Vehicle Speed Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
12
Turn the ignition off.
Disconnect the Vehicle Speed Sensor harness connector.
Disconnect the PCM C2 harness connector.
Check connectors - Clean/repair as necessary
Measure the resistance of the 5-volt Supply circuit between the Vehicle Speed Sensor
harness connector and the PCM C2 harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Repair the 5-volt Supply circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
187
DRIVEABILITY - DIESEL
*CHECKING THE SPEEDOMETER OPERATION —
Continued
Symptom:
*CHECKING THE TACHOMETER OPERATION
POSSIBLE CAUSES
CHECK OPERATION OF OTHER GAUGES
INSTRUMENT CLUSTER - INOPERATIVE TACHOMETER
ENGINE CONTROL MODULE - INCORRECT SIGNAL PROCESSING
ENGINE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO VOLTAGE
ENGINE SPEED SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
ENGINE SPEED SENSOR SIGNAL CIRCUIT OPEN
POWERTRAIN CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
Observe gauge and bulb operation during cluster initialization check.
Do the other gauges operate properly?
All
Yes
→
No
→
Refer to symptom list for problems related to Instrument Cluster
Communication.
Perform ROAD TEST VERIFICATION - VER-2.
2
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between ASD/Diesel Power Relay connector cavities 30 and 87
(in PDC).
Turn the ignition on.
Measure the voltage on the Engine Speed Sensor Signal circuit.
Is the voltage between 4.0 and 6.0 volts?
All
Yes
→
No
→
3
Start the engine.
With the DRB, select Body from the Systems menu, Electro/Mech Cluster (MIC),
Monitor Display, then PCI Bus Engine Info.
Monitor the DRB and Instrument Cluster Tachometer engine speed with the engine
idling, then raise the engine speed to 2500 RPM and release it back to idle.
NOTE: The DRB engine speed should be approximately 850 RPM at idle,
increase with actual engine speed and match the Instrument Cluster
Tachometer reading.
Did the Instrument Cluster Tachometer perform as it should?
All
Yes
→
No
→
Replace the Instrument Cluster in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
188
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
NOTE: Ensure the ECM harness connectors are connected.
Start the engine.
With a voltmeter set to measure frequency (Hz), measure the frequency of the Engine
Speed Sensor Signal circuit by back probing ECM C1 cavity 6.
Is the frequency between 26.0 and 34.0 Hz at idle?
All
Yes
→
Test Complete.
No
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Turn the ignition on.
Measure the voltage on the Engine Speed Sensor Signal circuit.
Is the voltage above 6.0 volts?
All
Yes
→
Repair the Engine Speed Sensor Signal circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
6
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Measure the resistance between ground and the Engine Speed Sensor Signal circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Engine Speed Sensor Signal circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
7
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the PCM harness connectors.
Measure the resistance of the Engine Speed Sensor Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Engine Speed Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
8
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Powertrain Control Module in accor-
dance with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
189
DRIVEABILITY - DIESEL
*CHECKING THE TACHOMETER OPERATION —
Continued
Symptom:
*CHECKING THE TURBOCHARGER BOOST PRESSURE SENSOR
CALIBRATION
POSSIBLE CAUSES
TURBOCHARGER BOOST PRESSURE SENSOR CALIBRATION
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, select Engine, Bosch then Sensors. Read the Boost Pressure Voltage.
Is the Boost Pressure Voltage between 1.70 and 1.95 volts?
All
Yes
→
Test Complete.
No
→
Replace the Turbocharger Boost Pressure Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
190
DRIVEABILITY - DIESEL
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст