Dodge Dakota (R1). Manual — part 170
Symptom:
*NO START CONDITION - DIESEL
POSSIBLE CAUSES
CHECKING FUEL QUANTITY ACTUATOR
ECM - IMMOBILIZER SIGNAL
ECM - IMMOBILIZER SIGNAL OUTPUT
FUEL INJECTION PUMP TIMING
FUEL QUANTITY ACTUATOR CIRCUIT SHORT TO VOLTAGE
FUEL SUPPLY CONTAMINATION
FUEL SYSTEM PRESSURE
FUEL SYSTEM RESTRICTION
IMMOBILIZER SIGNAL CIRCUIT OPEN
IMMOBILIZER SIGNAL CIRCUIT SHORTED TO GROUND
IMMOBILIZER SIGNAL CIRCUIT SHORTED TO VOLTAGE
VERIFYING IMMOBILIZER SIGNAL
TEST
ACTION
APPLICABILITY
1
NOTE: Check for SKIM, ECM, and PCM DTCs. Return to the Symptom List
to diagnose any DTCs that are present before continuing.
With the DRB, select Engine (JTEC), Miscellaneous and View SKIM Status.
While observing the DRB, attempt to start the engine.
Does the DRB display Fuel Shut-Off Activated?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the ECM harness connector.
Remove the ASD Relay from the PDC.
Connect a jumper wire between ASD Relay connector cavity 30 and cavity 87 in the
PDC.
Turn the ignition on.
Measure the voltage of the Immobilizer Signal circuit.
Is the voltage above 1.0 volt?
All
Yes
→
Repair the Immobilizer Signal circuit for a short to voltage.
Perform NO START VERIFICATION - VER-1.
No
→
215
STARTING
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the ECM harness connector.
Measure the resistance of the Immobilizer Signal circuit between the PCM harness
connector and the ECM harness connector.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Immobilizer Signal circuit for an open.
Perform NO START VERIFICATION - VER-1.
4
Turn the ignition off.
Disconnect the PCM harness connector.
Disconnect the ECM harness connector.
Measure the resistance between ground and the Immobilizer Signal circuit at the
PCM harness connector.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Immobilizer Signal circuit for a short to ground.
Perform NO START VERIFICATION - VER-1.
5
Turn the ignition off.
Disconnect the PCM harness connector.
Turn the ignition on.
Measure the amperage between PCM harness connector C-3 cavity 16 and ground.
Is the amperage between 1.0 and 1.4 milliamperes?
All
Yes
→
No
→
Replace and program the ECM in accordance with the Service
Information.
Perform NO START VERIFICATION - VER-1.
6
With the DRBIII
t, select the Lab Scope function.
Set the voltage range to +20.0V
Set the probe to X10.
Set the time range to 0.1S/Div.
Turn the ignition on.
Using the oscilloscope lead, backprobe the PCM harness connector C3 cavity 16.
NOTE: A valid immobilizer signal will cycle high and low similar to the
pattern shown in Charts and Graphs.
Does the DRB display show the 12-volt signal cycling high and low?
All
Yes
→
Replace and program the ECM in accordance with the Service
Information.
Perform NO START VERIFICATION - VER-1.
No
→
Replace the PCM in accordance with the Service Information.
Perform NO START VERIFICATION - VER-1.
216
STARTING
*NO START CONDITION - DIESEL —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Disconnect the Fuel Injection Pump 10-way harness connector.
Measure the resistance between cavity 8 and cavity 9 of the Fuel Injection Pump
10-way harness connector.
Is the resistance between 0.7 and 1.6 ohms?
All
Yes
→
No
→
Replace the Fuel Injection Pump assembly.
Perform NO START VERIFICATION - VER-1.
8
Turn the ignition off.
Disconnect the ECM harness connector.
Remove the ASD Relay from the PDC.
Connect a jumper wire between ASD Relay connector cavity 30 and cavity 87 in the
PDC.
Turn the ignition on.
Measure the voltage of the Fuel Quantity Actuator circuit at ECM harness connector
C2 cavity 59.
Is the voltage above 1.0 volt?
All
Yes
→
Repair the Fuel Quantity Actuator circuit for a short to voltage.
Perform NO START VERIFICATION - VER-1.
No
→
9
Inspect and fuel system lines for restrictions, leaks or other problems.
Is there any evidence of problems?
All
Yes
→
Repair as necessary.
Perform NO START VERIFICATION - VER-1.
No
→
10
Refer to the Service Information and perform the fuel pressure test.
Is the fuel pressure within specification?
All
Yes
→
No
→
Check the Fuel Injection Pump drive. If the drive is working
properly, replace the Fuel Injection Pump.
Perform NO START VERIFICATION - VER-1.
11
Refer to the Service Information and check the Fuel Injection Pump Timing.
Is the Fuel Injection Pump timing correct?
All
Yes
→
Check the fuel supply for contamination.
Perform NO START VERIFICATION - VER-1.
No
→
Refer to the Service Information to correctly time the Fuel
Injection Pump.
Perform NO START VERIFICATION - VER-1.
217
STARTING
*NO START CONDITION - DIESEL —
Continued
VERIFICATION TESTS
BODY VERIFICATION TEST - VER 1
APPLICABILITY
1. Disconnect all jumper wires and reconnect all previously disconnected components and
connectors.
2. If the Sentry Key Immobilizer Module (SKIM) or the Powertrain Control Module (PCM) was
replaced, proceed to number 5. If the SKIM or PCM was not replaced, continue to the next
number.
3. If the Central Timer Module was replaced, turn the ignition on for 15 seconds (to learn VIN)
or engine may not start (if VTSS equipped). If the vehicle is equipped with VTSS, use the
DRBIII and enable VTSS.
4. Program all RKE transmitters and other options as necessary. Proceed to number 12.
5. Obtain the Vehicle’s unique PIN assigned to it’s original SKIM from either the vehicle’s
invoice or from Chrysler’s Customer Assistance Center (1-800-992-1997).
6. NOTE: Once Secured Access Mode is active, the SKIM will remain in that mode for 60
seconds.
7. With the DRBIII
t, select THEFT ALARM, SKIM, MISCELLANEOUS and select SKIM
REPLACED. Enter the 4 digit PIN to put the SKIM in Secured Access Mode.
8. The DRBIII
t will prompt for the following steps.
9. Using the DRBIII
t, program all customer keys into the SKIM memory. This requires that the
SKIM be in Secured Access Mode, using the 4 digit PIN.
10. Note: If the PCM is replaced, the VIN and the unique Secret Key data must be transferred
from the SKIM to the PCM. This procedure requires the SKIM to be placed in Secured Access
Mode using the 4-digit PIN.
11. Note: If 3 attempts are made to enter Secured Access Mode using an incorrect PIN, Secured
Access Mode will be locked out for 1 hour which causes the DRBIII
t to display 9Bus +\- Signals
Open
9. To exit this mode, turn ignition to Run for 1 hour.
12. Ensure all accessories are turned off and the battery is fully charged.
13. Turn the Ignition on and with the DRBIII, erase all Diagnostic Trouble Codes from ALL
modules. Start the engine and allow it to run for 2 minutes and fully operate the system that
was malfunctioning.
14. Turn the ignition off and wait 5 seconds. Turn the ignition on and using the DRBIII, read
DTC’s from ALL modules.
Are any DTC’s present or is the original complaint still present?
All
Yes
→
Repair is not complete, refer to appropriate symptom.
No
→
Repair is complete.
CHARGING VERIFICATION - VER-3
APPLICABILITY
1. Inspect the vehicle to ensure that all engine components are properly installed and
connected. Reassemble and reconnect components as necessary.
2. If the PCM has been replaced, perform step 3. Otherwise, continue with step 4.
3. If the vehicle is equipped with a factory theft alarm, start the engine at least 20 times in
order to be able to activate the alarm system when desired.
4. With the DRB, erase all diagnostic trouble codes (DTCs).
5. Start the engine.
6. Raise the engine speed to 2000 RPM for at least 30 seconds.
7. Allow the engine to idle.
8. Turn the ignition off for 20 seconds.
9. Turn the ignition on.
10. With the DRB, read ECM and PCM DTCs.
11. If this DTC has reset, or another DTC has set, look for any Technical Service Bulletins
(TSBs) that may relate to this condition. Return to the Symptom List if necessary.
12. If the charging system is functioning correctly and there are no DTCs, the repair is now
complete.
Are any DTCs or symptoms remaining?
All
Yes
→
Repair is not complete, refer to appropriate symptom.
No
→
Repair is complete.
218
VERIFICATION TESTS
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