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WORKSHOP MANUAL LIBRARY

CAT 12 pages Actuator Troubleshooting — RENR5088-10 — 12 pages

This 12-page PDF is a CAT 12 pages actuator troubleshooting guide for DTC 0287-06 (Intake Valve Actuator #3 current high) on C15 On-Highway Truck Engines with MXS prefix. The document details the conditions that generate the fault code, the ECM system response, and a complete step-by-step diagnostic procedure covering wiring inspection, solenoid testing, and component replacement.

Official CAT 12 pages actuator document details

Brand Caterpillar (CAT)
Model coverage C15 Truck Engine MXS (C15 On-Highway Truck MXS00001-UP)
System/Group Intake Valve Actuation System — DTCs 285 through 290 (FMI 05 and 06)
Publication no. RENR5088-10
Year/Revision Published 01/02/2009, Updated 25/02/2009
Pages 12
File size 0.3 MB
Format PDF
Language English

Document table of contents

  • 0287-06 Intake Valve Actuator #3 Current High (93) — Conditions Which Generate This Code, System Response
  • Intake Valve Actuator Circuit — Test (System Operation Description)
  • Intake Valve Actuator Solenoid Test prerequisites and procedure
  • C15 schematic, P2 ECM connector pinout, valve cover connector pinout
  • Location of components (check valve, actuator solenoid, face seals, pressure sensor, pressure solenoid)
  • Test Step 1: Inspect Electrical Connectors and Wiring (45 N pull test, torque check 6 N·m)
  • Test Step 2: Check for Active Diagnostic Codes via Cat ET
  • Test Step 3: Create a Short Circuit at the Valve Cover Connector
  • Test Step 4: Create a Short Circuit at the ECM (J2/P2 connector)
  • Test Step 5: Open the Wires of the Suspect Solenoid at the Valve Cover Connector
  • Test Step 6: Verify harness wiring between solenoid connector and ECM connector P2
  • Test Step 7: Solenoid replacement verification and clearing logged diagnostic codes

Applicable truck models

This procedure applies to Caterpillar C15 On-Highway Truck Engines with serial prefix MXS (MXS00001-UP). The intake valve actuation system is specific to engines equipped with intake valve actuators controlled by the ECM via solenoid-operated hydraulic circuits using engine oil. The document covers all six cylinders through DTCs 285-05 through 290-06, though the primary focus is cylinder 3. For additional product support and serial number verification, visit Caterpillar official support.

Who needs this CAT 12 pages actuator manual

Diesel mechanics and workshop owners diagnosing low power complaints or active check engine lamps on C15 MXS engines will need this document. It is essential for anyone performing the Intake Valve Actuator Solenoid Test using Caterpillar Electronic Technician (Cat ET) and tracing short or open circuit faults through ECM connector P2 and valve cover connectors.

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