Dodge Dakota (R1). Manual — part 152
TEST
ACTION
APPLICABILITY
3
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.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Test Complete.
4
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Instrument Cluster.
Measure the resistance between ground and the Wait To Start Lamp Control circuit.
Is the resistance above 100 kohms?
All
Yes
→
No
→
Repair the Wait To Start Lamp Control circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the ECM harness connectors.
Remove the Instrument Cluster.
Measure the resistance of the Wait To Start Lamp Control circuit.
Is the resistance below 5.0 ohms?
All
Yes
→
No
→
Repair the Wait To Start Lamp Control circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
6
NOTE: Ensure the Message Center harness connector is connected.
Turn the ignition off.
Disconnect the ECM harness connectors.
Turn the ignition on.
Connect a jumper wire between ground and the Glow Plug Lamp Control circuit in
ECM harness connector C1.
Did the Glow Plug Lamp illuminate?
All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
143
DRIVEABILITY - DIESEL
P1645-GLOW DISPLAY SHORT CIRCUIT —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Remove and check the Wait To Start Lamp bulb from the Instrument Cluster.
Is the bulb OK?
All
Yes
→
Replace the Instrument Cluster in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Wait To Start Lamp bulb.
Perform ROAD TEST VERIFICATION - VER-2.
144
DRIVEABILITY - DIESEL
P1645-GLOW DISPLAY SHORT CIRCUIT —
Continued
Symptom:
P1660-REDUNDANT EMERG. STOP PLAUSIBILITY IN AFTER-RUN
When Monitored and Set Condition:
P1660-REDUNDANT EMERG. STOP PLAUSIBILITY IN AFTER-RUN
When Monitored:
During after-run, when the engine speed is below 800 RPM and vehicle
speed is below 2.5 MPH.
Set Condition:
The fuel shutdown solenoid is turned off and engine speed does not drop
below 500 RPM.
POSSIBLE CAUSES
INTERMITTENT CONDITION
FUEL SHUTDOWN SOLENOID CONTROL CIRCUIT SHORTED TO VOLTAGE
FUEL SHUTDOWN SOLENOID (FUEL INJECTION PUMP) SHORTED INTERNALLY
INTERNAL FUEL INJECTION PUMP TEST
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, erase ECM DTCs.
Start and stop the engine several times, pausing for 10 seconds at key off each time.
Turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC reset?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the ECM harness connectors.
Disconnect the Fuel Injection Pump harness connector.
Remove the ASD/Diesel Power Relay from the PDC.
Connect a jumper wire between cavity 30 and cavity 87 of the ASD/Diesel Power
Relay connector.
Turn the ignition on.
Measure the voltage on the Fuel Shutdown Solenoid Control circuit.
Is the voltage below 0.5 volt?
All
Yes
→
No
→
Repair the Fuel Shutdown Solenoid Control circuit for a short to
voltage.
Perform ROAD TEST VERIFICATION - VER-2.
NOTE: Remove the jumper wire from the ASD/Diesel Power Relay connec-
tor, reinstall the ASD/Diesel Power Relay in the PDC, and reconnect the
ECM harness connectors.
145
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Fuel Injection Pump harness connector.
Turn the ignition on.
With the DRB, actuate the Fuel Shutdown Solenoid.
Measure the voltage on the Fuel Shutdown Solenoid Control circuit.
Does the voltage cycle from B+ to below 1.0 volt?
All
Yes
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
4
Disconnect the Fuel Injection Pump harness connector.
Measure the resistance between the following cavities in the Fuel Injection Pump
connector (fuel pump side):
Cavity 1 to cavities 4, 5, 6, 7, 8, 9, and 10.
Cavity 4 to cavities 5, 6, 7, 8, 9, and 10.
Cavity 5 to cavities 6, 7, 8, and 9.
Cavity 7 to cavities 6, 8, 9, and 10.
Cavity 8 to cavities 6 and 10.
NOTE: The resistance should be above 100 ohms for all measurements.
Is the resistance above 100 ohms for each of the measurements?
All
Yes
→
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Replace the Fuel Injection Pump in accordance with the Service
Information.
Perform ROAD TEST VERIFICATION - VER-2.
5
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.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→
Repair as necessary
Perform ROAD TEST VERIFICATION - VER-2.
No
→
Test Complete.
146
DRIVEABILITY - DIESEL
P1660-REDUNDANT EMERG. STOP PLAUSIBILITY IN AFTER-RUN —
Continued
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