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DRIVEABILITY - DIESEL
P0235-BOOST PRESSURE SENSOR PLAUSIBILITY —
TEST
3
Turn the ignition off.
Disconnect the Boost Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Sensor Ground circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 4
→ Repair the Boost Pressure Sensor Ground circuit for high resis-
No
4
Turn the ignition off.
Disconnect the Boost Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the 5-Volt Supply circuit.
Is the resistance below 5.0 ohms?
Yes → Go To 5
→ Repair the 5-Volt Supply circuit for high resistance.
No
5
Turn the ignition off.
Replace the Boost Pressure Sensor.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Test drive the vehicle, pausing several times to cycle the ignition.
Monitor the DRB for ECM DTCs.
Did this DTC set again?
Yes → Replace and program the Engine Control Module in accordance
→ The repair is complete.
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
tance.
Perform ROAD TEST VERIFICATION - VER-2.
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.
54
Continued
APPLICABILITY
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All
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