CAT

The Engine Control Module (ECM) detects the following conditions:

•Actual boost is less than desired boost by more than 30 kPa (4.4 psi) for more than eight seconds.
•The current for the turbocharger solenoid is greater than 80% of the maximum value.
•Desired boost is not ZERO.
•The ECM has been powered for at least two seconds.

The wastegate solenoid allows the engine to more precisely regulate the boost pressure to the engine. By closing or partially closing the wastegate solenoid, the ECM can increase the boost pressure. Typical wastegates will limit boost pressure to a preset limit. The wastegate solenoid blocks air from reaching the wastegate and allowing boost pressure to increase. Air is routed from the intake manifold to the wastegate solenoid. Then, the air is directed to the wastegate. A bleed orifice allows air to escape, which allows the wastegate to close when the solenoid is closed.

Probable Causes:

1) Wastegate Solenoid Failure
2) Debris in system causing wastegate solenoid failure
3) Air not reaching wastegate solenoid
4) Bleed orifice is blocked
5) Wategate solenoid o-ring failure
6) Wastegate failure
7) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•The signal voltage from the boost pressure sensor is greater than 4.95 VDC for more than two seconds.
•The ECM has been powered for at least two seconds.
•The engine is not running or the rack position is less than 50 percent with the engine retarder off.

Probable Causes:

1) ECM Connection/Harness
2) Crankcase breather plugged
3) Pressure sensor
4) Pressure sensor harness
5) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•The signal voltage from the boost pressure sensor is greater than 4.95 VDC for more than two seconds.
•The ECM has been powered for at least two seconds.
•The engine is not running or the rack position is less than 50 percent with the engine retarder off.

Probable Causes:

1) ECM Connection/Harness
2) Crankcase breather plugged
3) Pressure sensor
4) Pressure sensor harness
5) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•Actual boost is less than desired boost by more than 30 kPa (4.4 psi) for more than eight seconds.
•The current for the turbocharger solenoid is greater than 80% of the maximum value.
•Desired boost is not ZERO.
•The ECM has been powered for at least two seconds.

The wastegate solenoid allows the engine to more precisely regulate the boost pressure to the engine. By closing or partially closing the wastegate solenoid, the ECM can increase the boost pressure. Typical wastegates will limit boost pressure to a preset limit. The wastegate solenoid blocks air from reaching the wastegate and allowing boost pressure to increase. Air is routed from the intake manifold to the wastegate solenoid. Then, the air is directed to the wastegate. A bleed orifice allows air to escape, which allows the wastegate to close when the solenoid is closed.

Probable Causes:

1) Wastegate Solenoid Failure
2) Debris in system causing wastegate solenoid failure
3) Air not reaching wastegate solenoid
4) Bleed orifice is blocked
5) Wategate solenoid o-ring failure
6) Wastegate failure
7) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•The signal voltage from the atmospheric pressure sensor is greater than 4.9 VDC for more than 30 seconds.
•The ECM has been powered for at least two seconds.

Probable Causes:

1) ECM Connection/Harness
2) Crankcase breather plugged
3) Pressure sensor
4) Pressure sensor harness
5) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•The signal voltage from the atmospheric pressure sensor is less than 0.2 VDC for more than 30 seconds.
•The ECM has been powered for at least two seconds.
•The engine is not running or the engine has been running for more than ten seconds.

Probable Causes:

1) ECM Connection/Harness
2) Crankcase breather plugged
3) Pressure sensor
4) Pressure sensor harness
5) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•The signal voltage from the engine coolant temperature sensor is greater than 4.95 VDC for more than eight seconds.
•The ECM has been powered for at least two seconds.
•The engine has been running for more than seven minutes.

Probable Causes:

1) ECM Connection/Harness
2) If code 232-3 or 232-4 (5 Volt Supply voltage codes) are active, troubleshoot those instead
3) Temperature sensor failure
4) Temperature sensor harness
5) ECM Failure

The Engine Control Module (ECM) detects the following conditions:

•The signal voltage from the engine coolant temperature sensor is less than 0.2 VDC for more than eight seconds.
•The ECM has been powered for at least two seconds.

Probable Causes:

1) ECM Connection/Harness
2) If code 232-3 or 232-4 (5 Volt Supply voltage codes) are active, troubleshoot those instead
3) Temperature sensor failure
4) Temperature sensor harness
5) ECM Failure

The ECM detects the following conditions:

•The duty cycle for the accelerator pedal position sensor is less than 5 percent or the duty cycle is greater than 95 percent for more than two seconds.
•The ECM has been powered for at least three seconds.

Probable Causes:

1) ECM Connection/Harness
2) Accelerator Position Sensor
3) Accelerator Position Sensor Harness
4) ECM Failure