This CAT C15 actuator troubleshooting document covers diagnostic code 288-05 for intake valve actuator #4 current low on a C15 On-Highway Truck MXS engine. It explains the ECM conditions that generate the code, the engine response, and the linked Intake Valve Actuator Circuit – Test procedure. The file is a 12-page English PDF from the Caterpillar C15 troubleshooting publication RENR5088-10.
Official CAT C15 actuator troubleshooting document details
| Brand | CAT |
|---|---|
| Model coverage | C15 Truck Engine MXS; C15 On-Highway Truck MXS00001-UP |
| System/Group | C15 (MXS, NKS, or RKS) / DTCs; intake valve actuator circuit |
| Publication no. | RENR5088-10 |
| Year/Revision | Publication Date 01/02/2009; Date Updated 25/02/2009 |
| Pages | 12 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- 0288-05 Intake Valve Actuator #4 current low (93)
- Conditions Which Generate This Code
- System Response
- Test Step 1. Perform the following diagnostic procedure: Intake Valve Actuator Circuit – Test
- Intake Valve Actuator Circuit – Test
- System Operation Description
- Intake Valve Actuator Solenoid Test
- C15 schematic
- P2 ECM connector
- Valve cover connectors for C15 engines
- Location of components
- Test Step 1. Inspect Electrical Connectors and Wiring
- Check for Active Diagnostic Codes
- Create a Short Circuit at the Valve Cover Connector
- Create a Short Circuit at the ECM
- Open the Wires of the Suspect Solenoid for the Intake Valve Actuator at the Valve Cover Connector
Applicable truck models
This manual applies to the Product: TRUCK ENGINE, Model: C15 TRUCK ENGINE MXS, Configuration: C15 On-Highway Truck MXS00001-UP. The procedure is valid only if the engine is equipped with an intake valve actuator, and it is used for intake valve actuator current low and current high diagnostic codes 285-05 through 290-06, including 288-05 Intake Valve Actuator #4 current low. For official brand information, visit Caterpillar.
Who needs this CAT C15 actuator troubleshooting manual
Workshop technicians, fleet mechanics, and service managers need this file when Cat ET shows OPEN during the Intake Valve Actuator Solenoid Test or when the check engine lamp is active with low engine power. It supports electrical diagnosis around the J2/P2 ECM connector, valve cover connectors, actuator solenoid circuits, supply wires, return wires, harness shorts, harness opens, and ECM replacement checks.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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