Dodge Dakota (R1). Manual — part 865
TEST
ACTION
APPLICABILITY
8
Turn the ignition off.
Disconnect the fuel pump module harness connector.
Turn the ignition on.
With the DRBIII
t, actuate the ASD Fuel System test.
Using a 12 volt test light connected to ground, probe the Fuel Pump Relay Output
circuit at the Fuel Pump Module harness connector.
Does the test light illuminate brightly?
All
Yes
→
No
→
Caution: Stop All Actuations.
9
Turn the ignition off.
Disconnect the Fuel Pump Module harness connector.
Note: Check connectors - It is critical that the connector is free from any
signs of corrosion or deformities - Clean/repair as necessary.
Using a test light connected to battery voltage, probe the Fuel Pump ground circuit
at the Fuel Pump Module harness connector.
Does the test light illuminate brightly?
All
Yes
→
No
→
Repair the open/high resistance in the fuel pump ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
10
If there are no possible causes remaining, view repair.
All
Repair
Replace the Fuel Pump Module.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
11
Turn the ignition off.
Remove the Fuel Pump Relay from the PDC.
With a 12 volt test light connected to ground, probe the Fuel Pump Relay Fused B+
circuit at the PDC.
Does the test light illuminate?
All
Yes
→
No
→
Repair the Fuel Pump Realy Fused B+ circuit. Check for open
fuse in the PDC.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
12
Turn the ignition off.
Remove the Fuel Pump Relay from the PDC.
Disconnect the Fuel Pump Module harness connector.
NOTE: Check connectors - It is critical that the connector is free from any
signs of corrosion or deformities
Measure the resistance of the Fuel Pump Relay Output circuit from the relay
connector to the fuel pump module connector.
Is the resistance below 5.0 ohms?
All
Yes
→
Replace the Fuel Pump Relay.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
No
→
Repair the Fuel Pump Relay Output circuit for an open.
Perform POWERTRAIN VERIFICATION TEST VER - 1.
192
DRIVEABILITY - GAS
*CHECKING FUEL DELIVERY —
Continued
Symptom:
*CHECKING MAP SENSOR OPERATION WITH NO DTC’S
POSSIBLE CAUSES
MAP SENSOR OPERATION
MAP SENSOR
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Attach a vacuum gauge to a manifold vacuum source.
NOTE: If the engine will not idle, maintain a constant engine speed above
idle.
Allow the engine to idle.
With the DRBIII
t, monitor the MAP sensor vacuum.
Compare the MAP vacuum value on the DRBIII
t and the vacuum reading on the
vacuum gauge.
Are the vacuum readings within 1 inch of vacuum of each other?
All
Yes
→
Test Complete.
No
→
Replace the MAP sensor.
Perform POWERTRAIN VERIFICATION TEST VER - 2.
193
DRIVEABILITY - GAS
Symptom:
*CHECKING MINIMUM AIRFLOW
POSSIBLE CAUSES
THROTTLE PLATE/LINKAGE BINDING
VACUUM LEAK
THROTTLE BODY
THROTTLE BODY DIRTY
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Check the throttle plate and linkage for a binding condition.
The throttle linkage must be at idle position. Ensure the throttle plate is fully closed
and against it’s stop.
Is the throttle plate and linkage free of damage?
All
Yes
→
No
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
2
Inspect the Intake Manifold for vacuum leaks.
Inspect the Power Brake Booster for any vacuum leaks.
Inspect the PCV system for proper operation or any vacuum leaks.
Were any problems found?
All
Yes
→
Repair vacuum leak as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
3
Turn the ignition off.
Disconnect the vacuum line at the PCV valve.
Install Miller Tool #6714 (0.185
9 air metering orifice) into the disconnected vacuum
line in place of the PCV valve.
Disconnect the purge hose from the fitting on the throttle body. The purge hose is
located on the front of the throttle body next to the MAP sensor. Cap the fitting at the
throttle body after the purge hose has been disconnected.
Start the engine. Ensure that all accessories are off. Allow the engine to reach
operating temperature above 82°C (180°F).
With the DRBIII
t in System Tests, perform the Minimum Air Flow function.
Is the engine RPM between 500 and 900?
All
Yes
→
Test Complete.
No
→
194
DRIVEABILITY - GAS
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Remove the Throttle Body.
WARNING: Clean throttle body in a well ventilated area. Wear rubber or
butyl gloves. Do not let cleaner come in contact with eyes or skin. Avoid
ingesting cleaner. Wash thoroughly after using cleaner.
While holding the throttle open, spray the entire throttle body bore and the manifold
side of the throttle plate with Mopar Throttle Body Cleaner. Clean the IAC motor
passage also. Use compressed air to dry the throttle body.
Re-install the throttle body.
Note: Miller Tool #6714 (0.185
( air metering orifice) still attached to the PCV
vacuum line and the purge hose fitting on the throttle body capped.
Start the engine. Ensure that all accessories are off. Allow the engine to reach
operating temperature above 82°C (180°F).
With the DRBIII
t in System Tests, perform the Minimum Air Flow function.
Is the engine RPM between 500 and 900?
All
Yes
→
Repair complete.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
Test Complete.
CAUTION: Stop all actuations. Turn the engine off.
195
DRIVEABILITY - GAS
*CHECKING MINIMUM AIRFLOW —
Continued
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