TEST
ACTION
APPLICABILITY
3
Turn the ignition off.
Disconnect the Intake Pressure Sensor harness connector.
Turn the ignition on.
Connect a jumper wire between the Intake Pressure Sensor Signal circuit and the
Intake Pressure Sensor 5-Volt Supply circuit.
With the DRB, read the Intake Pressure Sensor voltage.
Is the Intake Pressure Sensor voltage above 4.5 volts?
All
Yes
→ Replace the Intake Pressure Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 4
4
Turn the ignition off.
Disconnect the Intake Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between ground and the Intake Pressure Sensor Signal
circuit.
Is the resistance above 1000 ohms?
All
Yes
→ Go To 5
No
→ Repair the Intake Pressure Sensor Signal circuit for a short to
ground.
Perform ROAD TEST VERIFICATION - VER-2.
5
Turn the ignition off.
Disconnect the Intake Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance between the Intake Pressure Sensor Signal circuit and
Sensor Ground circuit.
Is the resistance above 1000 ohms?
All
Yes
→ Go To 6
No
→ Repair the Intake Pressure Sensor Signal circuit for a short to the
Sensor Ground circuit.
Perform ROAD TEST VERIFICATION - VER-2.
6
Turn the ignition off.
Disconnect the Intake Pressure Sensor harness connector.
Disconnect the ECM harness connectors.
Measure the resistance of the Intake Pressure Sensor Signal circuit.
Is the resistance below 10.0 ohms?
All
Yes
→ Go To 7
No
→ Repair the Intake Pressure Sensor Signal circuit for an open.
Perform ROAD TEST VERIFICATION - VER-2.
7
If there are no possible causes remaining, view repair.
All
Repair
Replace and program the Engine Control Module in accordance
with the Service Information.
Perform ROAD TEST VERIFICATION - VER-2.
32
DRIVEABILITY - DIESEL
P0105-INTAKE PRESSURE SENSOR SIGNAL VOLTAGE TOO LOW —
Continued