2008/08/01 Caterpillar

Engine:

C11 (S/N: KCA1-UP)

C13 (S/N: JAM1-UP; KCB1-UP)

C15 (S/N: BXS1-UP; MXS1-UP; NXS1-UP; RKS1-UP)

The test for troubleshooting the intake valve actuators in ACERT engines has been updated. The test has been updated in order to include additional causes and troubleshooting procedures for a 385-1 Low Intake Valve Actuation System Oil Pressure diagnostic code.

The 385-1 Low Intake Valve Actuation System Oil Pressure diagnostic code can be caused by either a mechanical problem or an electrical problem. The updated information will help the technicians determine the cause of the diagnostic code.

Refer to Troubleshooting, SENR9698, "Intake Valve Actuator Response - Test" for the following engines:

• C11 (S/N: KCA)

• C13 (S/N: JAM)

• C13 (S/N: KCB)

• C15 (S/N: BXS)

Refer to Troubleshooting, RENR5088, "Intake Valve Actuator Response - Test" for the following engines:

• C15 (S/N: MXS)

• C15 (S/N: NXS)

• C15 (S/N: RKS)