TEST
ACTION
APPLICABILITY
3
NOTE: Inspect all air intake and turbocharger related tubes for damage,
restriction or poor connection. Any of these conditions can cause a this DTC
to set.
Turn the ignition off.
Inspect all air intake and turbocharger related tubes and connections.
Were any problems found?
All
Yes
→ Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 4
4
Turn the ignition off.
Remove the Intake Air Temperature Sensor.
Connect smoke machine 84-04 to the Intake Air Temperature Sensor port in the
intake duct and begin injecting smoke into the intake system.
Observe all intake system components for evidence of smoke leakage.
Is there evidence of smoke leakage?
All
Yes
→ Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 5
5
Turn the ignition off.
Replace the Boost Pressure Servo Motor in accordance with the Service Information.
NOTE: Ensure the ECM and Boost Pressure Servo Motor harness connec-
tors are connected.
Test drive the vehicle.
With the DRB, check for this DTC to set again.
Did this DTC set again?
All
Yes
→ Replace the Turbocharger assembly in accordance with the Ser-
vice Information.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Replace the Boost Pressure Servo Motor.
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.
217
DRIVEABILITY - DIESEL
P2359-BOOST PRESSURE TOO HIGH —
Continued