CAT

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

•The difference between desired boost and actual boost is greater than 20 kPa (80 inch of H2O) for more than eight seconds.
•Desired boost is not ZERO.
•The ECM has been powered for at least two seconds.

This engine utilizes a wastegate control valve that is electronically controlled in order to precisely regulate the boost pressure. The Engine Control Module (ECM) monitors the signal from the boost pressure sensor in order to determine the boost pressure in the intake manifold. The ECM uses this information and other information that is related to the current power demand and the current engine operating conditions in order to determine the optimum position of the wastegate valve at the turbocharger.

The turbocharger’s wastegate valve regulates the amount of exhaust gas that is allowed to bypass the turbine wheel of the turbocharger. This allows the ECM to control the speed of the turbocharger and the boost pressure.

Probable Causes:

1) ECM Connection
2) Wastegate control solenoid (Can be replaced instead of the entire valve)
3) Harness between the ECM and the wastegate control solenoid
4) ECM Failure
5) Air inlet system restrictions or exhaust system restrictions
6) Drain orifice plugged

Vehicle speed is greater than 127 mph (204 km/h) for at least two seconds.

Vehicle speed is changing faster than is possible. If the progammed VSL Protection is progammed to 3000 rpm this diagnostic will not occur.

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

•The signal for boost pressure has been more than 172 kPa (25 psi) for more than 0.5 seconds.
•The fuel rate is 80% of the maximum value for the current torque map.
•102-03 diagnostic code is active.

This engine utilizes a wastegate control valve that is electronically controlled in order to precisely regulate the boost pressure. The Engine Control Module (ECM) monitors the signal from the boost pressure sensor in order to determine the boost pressure in the intake manifold. The ECM uses this information and other information that is related to the current power demand and the current engine operating conditions in order to determine the optimum position of the wastegate valve at the turbocharger.

The turbocharger’s wastegate valve regulates the amount of exhaust gas that is allowed to bypass the turbine wheel of the turbocharger. This allows the ECM to control the speed of the turbocharger and the boost pressure.

Probable Causes:

1) ECM Connection
2) Wastegate control solenoid (Can be replaced instead of the entire valve)
3) Harness between the ECM and the wastegate control solenoid
4) ECM Failure
5) Air inlet system restrictions or exhaust system restrictions
6) Drain orifice plugged

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

•The intake manifold air temperature is equal to 90 °C (194 °F) or above 90 °C (194 °F).
•The engine coolant temperature is greater than 99 °C (210.2 °F).
•The engine has been running for at least 30 seconds.

Note: This diagnostic code represents a critical event. This diagnostic code does not represent an electronic system fault.

Possible Causes:

1) Sensor failure
2) Sensor connector/harness
3) Check connection at ECM and harness between sensor & ECM

The Ecm detects one of the following after attempting to actuacte the injector solenoid: – An open circuit in the injector wiring. – An internal open circuit in the injector solenoid.

The Ecm detects one of the following after attempting to actuacte the injector solenoid: – An open circuit in the injector wiring. – An internal open circuit in the injector solenoid.

The ECM detects the following conditions:

•The intake manifold air temperature is greater than 109 °C (228 °F) for more than two seconds.
•The engine has been running for at least 30 seconds.
•The engine coolant temperature is above 99 °C (210 °F).

Probable Causes:

1) Engine coolant low
2) Debris/low air flow in the charge air cooler
3) Heavy load + high ambient air temperature

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.

The Engine Control Module (ECM) continuously creates a pull-up voltage on the signal wire for each sensor. The ECM uses this pull-up voltage in order to detect a problem in the signal circuit. When the ECM detects voltage that is above a threshold on the signal wire, the ECM activates a -3 diagnostic code. When the ECM detects voltage that is below a threshold on the signal wire, the ECM activates a -4 diagnostic code.

Note: When you check for a diagnostic code, be sure to wait at least 30 seconds.

The most likely cause of a code is a problem with an electrical connector or wiring. The least likely cause of a code is the ECM.

The following sensors are included in this code:

Fuel pressure sensor
Injection actuation pressure sensor
Barometric pressure sensor
Boost pressure sensor
Engine oil pressure sensor

Probable Causes:

1) ECM Connection
2) Sensor failure
3) Sensor harness/connector
4) ECM Failure