This 36-page PDF is the official CAT 36 pages actuator troubleshooting procedure for diagnostic code 0288-07 — Intake Valve Actuator #4 Not Responding. It covers the Intake Valve Actuation (IVA) system operation, step-by-step electrical and mechanical diagnostics, oil pressure verification, pressure sensor testing, and leak test procedures for C15 on-highway truck engines with MXS, NKS, or RKS prefix serial numbers.
Official CAT 36 pages actuator document details
| Brand | Caterpillar (CAT) |
| Model coverage | C15 Truck Engine MXS, NKS, RKS configurations |
| System / Group | Intake Valve Actuation (IVA) — DTC 0288-07 |
| Publication no. | RENR5088-10 |
| Year / Revision | Published 01/02/2009, Updated 25/02/2009 |
| Pages | 36 |
| File size | 1.4 MB |
| Format | |
| Language | English |
Document table of contents
- 0288-07 Intake Valve Actuator #4 Not Responding — Conditions Which Generate This Code and System Response
- Intake Valve Actuator Response — Test (System Operation Description)
- Component Location — Control Valve, Pressure Sensor, Check Valve, Actuators (C11/C13 and C15 layouts)
- System Operation During Engine Start — ECM sequence, control valve timing, 283-7 code activation
- System Operation During Engine Operation — Normal operating temperature requirements
- Section View of Components — Actuator, Solenoid, Piston, Rocker Arm, Valve, Rail, Intake Valves
- Troubleshooting Procedure — Diagnostic codes for mechanical and electrical problems (Table 1)
- Engine Oil Pressure Verification — Severity 1 and Severity 2 trip points, VVA pressure minimums (Tables 2 and 3)
- Intake Valve Actuation Oil Pressure Sensor Testing — Fabricated test assembly, air pressure vs. voltage ranges (Table 4)
- Leak Test — Purge orifice inspection, face seal checks, O-ring verification (Illustrations 20–22)
- Actuator Inspection and Replacement — Debris removal, face seal assessment, road test verification
Applicable truck models
This document applies to Caterpillar C15 on-highway truck engines in configurations MXS00001-UP, NKS, and RKS. Several reference illustrations and pressure tables also cover C11 and C13 engines sharing the same IVA architecture. The Engine Control Module (ECM) controls the system using pressurized engine oil and electrically commanded solenoids within each actuator. Diagnostics require the Caterpillar Electronic Technician (Cat ET) service tool for code clearing, snapshot review, and live monitoring of engine oil pressure and rail pressure. For official parts and service support, visit Caterpillar Support.
Who needs this CAT 36 pages actuator manual
Diesel mechanics and workshop owners servicing CAT C15 trucks that display DTC 0288-07 or related IVA fault codes (such as 283-7) will need this document. It provides the complete test sequence — from initial ECM response through oil pressure verification, sensor bench testing, hydraulic leak isolation, and final road-test confirmation under load.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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