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DRIVEABILITY - DIESEL
Symptom:
P0235-BOOST PRESSURE SENSOR SIGNAL VOLTAGE TOO LOW
When Monitored and Set Condition:
P0235-BOOST PRESSURE SENSOR SIGNAL VOLTAGE TOO LOW
When Monitored: With the ignition on.
Set Condition: The Turbocharger Boost Pressure Sensor Signal voltage is below 0.30 volt
for at least 2 seconds.
INTERMITTENT CONDITION
5-VOLT SUPPLY CIRCUIT OPEN
BOOST PRESSURE SENSOR
BOOST PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
BOOST PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS SHORTED TOGETHER
BOOST PRESSURE SENSOR SIGNAL CIRCUIT OPEN
ENGINE CONTROL MODULE
TEST
1
Turn the ignition on.
With the DRB, read the Turbocharger Boost Pressure Sensor voltage.
Is the voltage below 0.3 volt?
Yes → Go To 2
→ Go To 8
No
2
Turn the ignition off.
Disconnect the Boost Pressure Sensor harness connector.
Turn the ignition on.
Measure the voltage between ground and the 5-volt Supply circuit.
Is the voltage above 4.9 volt?
Yes → Go To 3
→ Repair the 5-volt Supply circuit for an open.
No
3
Turn the ignition off.
Disconnect the Boost Pressure Sensor harness connector.
Turn the ignition on.
Connect a jumper wire between the Boost Pressure Sensor Signal and 5-volt Supply
circuits.
With the DRB, read the Boost Pressure Sensor voltage.
Is the Boost Pressure Sensor voltage above 4.5 volts?
Yes → Replace the Boost Pressure Sensor.
→ Go To 4
No
POSSIBLE CAUSES
ACTION
Perform ROAD TEST VERIFICATION - VER-2.
Perform ROAD TEST VERIFICATION - VER-2.
58
APPLICABILITY
All
All
All
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