P0105-TURBOCHARGER INLET PRESSURE SENSOR SIGNAL VOLTAGE TOO LOW
For a complete wiring diagram Refer to Section 8W
- When Monitored:
With the ignition on.
- Set Condition:
The Boost Pressure Sensor signal voltage is below 0.29 volt for 0.5 seconds.
| Possible Causes |
| BOOST PRESSURE SENSOR 5-VOLT SUPPLY CIRCUIT OPEN |
| BOOST PRESSURE/INTAKE AIR TEMPERATURE 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 |
Diagnostic Test
1.READ THE BOOST PRESSURE SENSOR VOLTAGE ON THE SCAN TOOL
NOTE: If DTC P0641, P0651 or P0697 is present with this DTC, diagnose DTCs P0641, P0651 or P0697 before diagnosing this DTC.
Is the voltage below 0.2 volt?
Yes
- Go To2
No
- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
2.SENSOR REFERENCE VOLTAGE B CIRCUIT OPEN
Is the voltage above 4.9 volts?
Yes
- Go To3
No
- Repair the Boost Pressure Sensor 5-Volt Supply circuit for an open.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
3.BOOST PRESSURE/INTAKE AIR TEMPERATURE SENSOR
Is the Boost Pressure Sensor voltage above 4.5 volts?
Yes
- Replace the Boost Pressure/Intake Air Temperature Sensor.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
No
- Go To4
4.BOOST PRESSURE SENSOR SIGNAL CIRCUIT SHORTED TO GROUND
Is the resistance above 1000 ohms?
Yes
- Go To5
No
- Repair the Boost Pressure Sensor Signal circuit for a short to ground.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
5.BOOST PRESSURE SENSOR SIGNAL AND GROUND CIRCUITS SHORTED TOGETHER
Is the resistance above 1000 ohms?
Yes
- Go To6
No
- Repair the Boost Pressure Sensor Signal circuit for a short to the Sensor Ground circuit.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
6.BOOST PRESSURE SENSOR SIGNAL CIRCUIT OPEN
Is the resistance below 10.0 ohms?
Yes
- Go To7
No
- Repair the Boost Pressure Sensor Signal circuit for an open.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).
7.ENGINE CONTROL MODULE
If there are no possible causes remaining, view repair.
Repair
- Replace and program the Engine Control Module in accordance with the Service Information.
- Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING).