Dodge Dakota (R1). Manual — part 878
TEST
ACTION
APPLICABILITY
1
Note: The following list of items must be checked before continuing with
any no start tests.
The battery must be fully charged and in good condition. A low charged battery may
produce invalid test results. If the battery is low, charge the battery and then attempt
to start the vehicle by cranking the engine for 15 seconds, 3 consecutive times.
This will allow any DTC’s to set that may have been erased due to a dead battery.
Ensure the Powers and Ground to the PCM are ok.
Make sure the PCM communicates with the DRBIII
t and that there are no DTC’s
stored in the PCM memory. If the PCM reports a No Response condition, refer to the
Communication category for the proper tests.
Read the PCM DTC’s with the DRBIII
t. If any DTC’s are present, they must be
repaired before continuing with any other No Start diagnostic tests. Refer to the
Symptom list for the related P-code that is reported by the PCM.
Ensure that the PCI bus is functional. Attempt to communicate with the Instrument
Cluster and SKIM, If you are unable to establish communicate refer to the
Communication category for the proper symptoms.
The Sentry Key Immobilizer System must be operating properly. Check for proper
communication with the DRBIII
t and check for DTC’s that may be stored in the
Sentry Key Immobilizer Module (SKIM). repair the DTC(s) before continuing.
If no DTC’s are found, using the DRBIII
t select Clear PCM (BATT Disconnect).
Crank the engine several times. Using the DRBIII
t, read DTC’s. If a DTC is present
perform the DTC diagnostics before continuing.
Were any problems found?
All
Yes
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
2
Turn the ignition on.
With the DRBIII
t, under DTC’s & Related Functions, read the Secondary Indicators
while cranking the engine.
Are there any Secondary Indicators present while cranking the engine?
All
Yes
→
Refer to symptom list and perform tests related to the secondary
indicator that is reported by the DRBIII
t.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
3
Check for any open fuses in the PDC or Junction Block that may be related to the No
Start condition.
Are any of the fuses open?
All
Yes
→
Replace the open fuse and check the related circuit(s) for a short
to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
4
With the DRBIII
t in Sensors, check the 9Current CKP Count9 while cranking the
engine.
Does the CKP Counter change while cranking the engine?
All
Yes
→
No
→
Refer to Driveability Symptom P0320-NO CRANK REFERENCE
SIGNAL AT PCM.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
244
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TEST
ACTION
APPLICABILITY
5
Is the vehicle equipped with a 4.7 litre engine?
All
No
→
Yes
→
6
With the DRBIII
t in Sensors, check the 9Current CMP Count9 while cranking the
engine.
Does the
9Current CMP Count9 change while cranking the engine?
All
Yes
→
No
→
Refer to Driveability Symptom P0340-NO CAM SIGNAL AT PCM
Perform POWERTRAIN VERIFICATION TEST VER - 5.
7
Turn the ignition on.
With the DRBIII
t in Inputs/Outputs, check the 9Current Sync State9 while cranking
the engine.
Does the DRBIII
t show Current Sync State 9Out of Sync9 while cranking the engine?
All
Yes
→
Check for the CKP Sensor Signal ckt shorted to the CMP Sensor
Signal ckt OR Check for valve timing/CMP drive problem.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
8
With the DRBIII
t in Sensors, check the 9Current CMP Count9 while cranking the
engine.
Does the
9Current CMP Count9 change while cranking the engine?
All
Yes
→
No
→
Refer to Driveability Symptom P0340-NO CAM SIGNAL AT PCM
Perform POWERTRAIN VERIFICATION TEST VER - 5.
9
Turn the ignition on.
With the DRBIII
t in Inputs/Outputs, check the 9Current Sync State9 while cranking
the engine.
Does the DRBIII
t show Current Sync State 9Out of Sync9 while cranking the engine?
All
Yes
→
Check for the CKP Sensor Signal ckt shorted to the CMP Sensor
Signal ckt OR Check for valve timing/CMP drive problem.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
10
NOTE: This test applies only to 4.7L engine.
Turn the ignition off.
Disconnect the spark plug cable at the #1 spark plug.
Connect the #1spark plug cable to a spark tester and the spark tester to a good engine
ground.
Caution: Ignition coil damage may occur if the spark tester is not properly
grounded.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
While cranking the engine for 10 seconds, watch for spark at the spark tester.
Note: Consider 1 or 2 sparks as a no spark condition.
Is there good spark while cranking the engine?
All
Yes
→
No
→
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TEST
ACTION
APPLICABILITY
11
Turn the ignition on.
With the DRBIII
t, actuate the ASD Fuel System test.
Note: It may be necessary to use a mechanics stethoscope in the next step.
Listen for fuel pump operation at the fuel tank.
Can the fuel pump operation be heard?
All
Yes
→
No
→
CAUTION: Stop all Actuations.
12
Check for any of the following conditions/mechanical problems.
ENGINE VALVE TIMING - must be within specifications
ENGINE COMPRESSION - must be within specifications
ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.
FUEL - must be free of contamination
FUEL INJECTOR - plugged or restricted injector; control wire not connected to
correct injector
Are there any engine mechanical problems?
All
Yes
→
Repair as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
13
Turn the ignition off.
Warning: The fuel system is under a constant pressure (even with the engine
off). Before testing or servicing any fuel system hose, fitting or line, the fuel
system pressure must be released.
Remove the pressure test port cap at the fuel rail test port. Connect a fuel pressure
gauge to the test port pressure fitting on the fuel rail.
Turn the ignition on. With the DRBIII
t, actuate the ASD Fuel System test and
observe the fuel pressure gauge.
NOTE: Fuel pressure specification is 49.2 psi +/- 5 psi (339 KPa +/- 34 KPa
Choose a conclusion that best matches your fuel pressure reading.
All
Below Specification
Within Specification
Above Specification
Replace the fuel filter/pressure regulator.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
Caution: Stop all actuations.
14
Visually inspect the fuel supply line from the fuel tank to the fuel rail. Look for any
signs of physical damage that may restrict the supply line.
Were any problems found with the fuel supply line?
All
Yes
→
Repair/replace fuel supply line as necessary.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
246
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TEST
ACTION
APPLICABILITY
15
Turn the ignition off.
Warning: The fuel system is under a constant pressure (even with the engine
off). Before testing or servicing any fuel system hose,fitting or line, the fuel
system pressure must be released.
Remove the Fuel Pump Module and inspect the Fuel Inlet Strainer.
Is the Fuel Inlet Strainer plugged?
All
Yes
→
Replace the Fuel Pump Inlet Strainer.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
No
→
16
If there are no possible causes remaining, view repair.
View repair options.
All
Repair
Replace the Fuel Pump Module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
17
Turn the ignition off.
Warning: The fuel system is under a constant pressure (even with the engine
off). Before testing or servicing any fuel system hose, fitting or line, the fuel
system pressure must be released.
Disconnect the fuel supply line at the fuel rail.
Connect fuel line adapter #6539(5/16
9) or #6631(3/89) to the disconnected fuel supply
line. Insert the other end of the adapter into a graduated container.
Caution: Do not operate the fuel pump for more than 7 seconds in the next
step. Fuel pump module reservoir may run empty and damage to the fuel
pump will result.
Note: Specification: A good fuel pump will deliver at least 1/4 liter (1/2 pint)
of fuel in 7 seconds.
Turn the ignition on.
With the DRBIII
t, actuate the ASD Fuel System test for 7 seconds.
Is the fuel pump capacity within specification?
All
Yes
→
Test Complete.
No
→
Check for a kinked/damaged fuel supply line between the fuel
tank and fuel rail. If OK, replace the fuel pump module.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
CAUTION: Stop all Actuations.
18
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.
Measure the fuel pump ground circuit at the fuel pump module harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the open fuel pump ground circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 5.
247
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Continued
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