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P0235-BOOST PRESSURE SENSOR SIGNAL VOLTAGE TOO HIGH —
Continued
TEST
7
Turn the ignition off.
NOTE: Ensure all harness connectors are connected.
Turn the ignition on.
Measure the voltage of the Boost Pressure Sensor Signal circuit by back probing
ECM harness connector C1, cavity 11.
Is the voltage above 4.85 volts?
Yes → Replace the Boost Pressure Sensor.
→ Go To 8
No
8
Turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC set again?
Yes → Replace and program the Engine Control Module in accordance
→ Ensure good terminal contact between the Turbocharger Boost
No
9
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.
Pressure Sensor harness connector and the sensor. The repair is
complete.
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
57
APPLICABILITY
All
All
All
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