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P1270-INTAKE PORT SWIRL ACTUATOR OPEN CIRCUIT —
TEST
4
Turn the ignition off.
Disconnect the Swirl Solenoid harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Swirl Solenoid Control circuit.
Is the resistance below 10.0 ohms?
Yes → Go To 5
→ Repair the Swirl Solenoid Control circuit for an open.
No
5
Turn the ignition off.
Install a substitute Swirl Solenoid in place of the vehicle's Swirl Solenoid.
NOTE: Ensure the ECM and Swirl Solenoid harness connectors are con-
nected.
Turn the ignition on.
With the DRBIII , actuate the Swirl Solenoid.
With the DRB, check for this DTC to set again.
Did this DTC set again?
Yes → Replace and program the Engine Control Module in accordance
→ Replace the Swirl Solenoid.
No
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?
Yes → Repair as necessary.
→ Test Complete.
No
ACTION
Perform ROAD TEST VERIFICATION - VER-2.
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
183
Continued
APPLICABILITY
All
All
All
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