Dodge Dakota (R1). Manual — part 148
TEST
ACTION
APPLICABILITY
7
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.
127
DRIVEABILITY - DIESEL
P1625-ASD/DIESEL POWER RELAY SHUTS OFF TOO LATE —
Continued
Symptom:
P1625-ASD/DIESEL POWER RELAY SHUTS OFF TOO SOON
When Monitored and Set Condition:
P1625-ASD/DIESEL POWER RELAY SHUTS OFF TOO SOON
When Monitored:
During after-run.
Set Condition:
The internal ECM timer determines that the ASD/Diesel Power Relay has
shut off before the AFTER-RUN mode of operation has been completed.
POSSIBLE CAUSES
CHECK FOR OTHER DTCS
INTERMITTENT CONDITION
SUBSTITUTE ASD/DIESEL POWER RELAY
ASD/DIESEL POWER RELAY CONTROL CIRCUIT OPEN INTERMITTENTLY
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, check for additional DTCs.
Are other DTCs present?
All
Yes
→
Refer to the Symptom List for diagnosis of the other DTCs before
continuing.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
2
Turn the ignition on.
With the DRB, erase ECM DTCs.
Perform several ignition key cycles, pausing for at least 10 seconds between each
cycle.
Turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC reset?
All
Yes
→
No
→
3
Turn the ignition off.
Install a substitute relay in place of the ASD/Diesel Power Relay.
Perform several ignition key cycles, pausing for at least 10 seconds between each
cycle.
Turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC reset?
All
Yes
→
No
→
Replace the ASD/Diesel Power Relay.
Perform ROAD TEST VERIFICATION - VER-2.
128
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
4
Turn the ignition off.
Remove the ASD/Diesel Power Relay from the PDC.
Disconnect the ECM harness connectors.
Measure the resistance of the ASD/Diesel Power Relay Control circuit while wiggling
the wiring harness and connectors between the ECM and the PDC.
Was the resistance above 5.0 ohms at any time while wiggling the wiring harness and
connectors?
All
Yes
→
Repair the ASD/Diesel Power Relay Control circuit for an inter-
mittent open.
Perform ROAD TEST VERIFICATION - VER-2.
No
→
5
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
6
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.
129
DRIVEABILITY - DIESEL
P1625-ASD/DIESEL POWER RELAY SHUTS OFF TOO SOON —
Continued
Symptom:
P1630-SOLENOID VALVE CONTROLLER OPEN CIRCUIT
When Monitored and Set Condition:
P1630-SOLENOID VALVE CONTROLLER OPEN CIRCUIT
When Monitored:
With the ignition on.
Set Condition:
The ECM detects an open or short to ground on the fuel timing solenoid
control circuit.
POSSIBLE CAUSES
FUEL INJECTION PUMP
INTERMITTENT CONDITION
FUEL TIMING SOLENOID CONTROL CIRCUIT SHORTED TO GROUND
FUSED ASD RELAY OUTPUT CIRCUIT SHORTED TO GROUND
FUSED ASD RELAY OUTPUT OPEN
FUEL TIMING SOLENOID CONTROL CIRCUIT OPEN
FUEL TIMING SOLENOID (FUEL INJECTION PUMP) INTERNAL
INTERNAL FUEL INJECTION PUMP TEST
ENGINE CONTROL MODULE
TEST
ACTION
APPLICABILITY
1
Turn the ignition on.
With the DRB, erase ECM DTCs.
Turn the ignition off, wait 30 seconds, then turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC reset?
All
Yes
→
No
→
2
Turn the ignition off.
Disconnect the Fuel Injection Pump harness connector.
Turn the ignition on.
Measure the voltage on the Fused ASD Relay Output circuit.
Is the voltage above 10.5 volts?
All
Yes
→
No
→
130
DRIVEABILITY - DIESEL
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