This 12-page CAT C15 286-07 actuator troubleshooting document provides the official Caterpillar diagnostic procedure for DTC 0286-07 — Intake Valve Actuator #2 Not Responding — on C15 on-highway truck engines (MXS configuration). It details system operation, ECM response behavior, step-by-step electrical testing, and solenoid replacement procedures.
Official CAT C15 286-07 actuator document details
| Brand | Caterpillar (CAT) |
| Model coverage | C15 Truck Engine MXS (MXS00001-UP) |
| System / Group | Intake Valve Actuation System — DTCs (SMCS 5479-038-IL) |
| Publication no. | RENR5088-10 |
| Year / Revision | Published 01/02/2009, Updated 25/02/2009 |
| Pages | 12 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- 0286-07 Intake Valve Actuator #2 Not Responding — Conditions Which Generate This Code, System Response
- Intake Valve Actuator Circuit — Test (System Operation Description)
- Related diagnostic codes: 285-05/06 through 290-05/06 (Actuators #1–#6, current low/high)
- C15 schematic — Illustration 1
- P2 ECM connector pin locations — Illustration 2 (P2-53, P2-61, P2-77, P2-100 through P2-113)
- Valve cover connectors for C15 engines — Illustration 3
- Component locations: check valve, actuator solenoid, face seals, pressure sensor, pressure solenoid — Illustration 4
- Test Step 1: Inspect Electrical Connectors and Wiring (pull test, torque check, abrasion inspection)
- 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
- Test Step 5: Open the Wires of the Suspect Solenoid at the Valve Cover Connector
- Test Step 6–7: Continuity and resistance measurements, solenoid replacement procedures
Applicable truck models
This manual applies to the Caterpillar C15 on-highway truck engine, specifically the MXS serial number prefix (MXS00001-UP). The procedures cover engines equipped with the intake valve actuation system controlled by the Engine Control Module (ECM) through the J2/P2 connector. The document also references companion codes for actuators #1 through #6 (FMI 285 through 290), making it relevant to any C15 MXS engine experiencing intake valve actuator faults. For additional product support, visit Caterpillar’s official support page.
Who needs this CAT C15 286-07 actuator manual
Diesel mechanics and workshop owners servicing Caterpillar C15 truck engines will need this manual when the check engine lamp illuminates for DTC 0286-07 or related intake valve actuator current codes (285 through 290). The step-by-step procedure — from connector inspection and 45 N pull tests through the Intake Valve Actuator Solenoid Test in Cat ET — guides technicians to isolate faults in wiring, harness, solenoid, or ECM without unnecessary part replacement.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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