This 12-page 12 pages DTCs actuator troubleshooting document provides the complete diagnostic procedure for DTC 0288-06 (Intake Valve Actuator #4 Current High) on Caterpillar C15 on-highway truck engines (MXS prefix). It details how the ECM detects a high current short circuit condition, system responses including low power and default torque map activation, and the full Intake Valve Actuator Circuit Test procedure with step-by-step electrical checks and repair instructions.
Official 12 pages DTCs actuator document details
| Brand | Caterpillar (CAT) |
| Model coverage | C15 Truck Engine MXS (On-Highway, 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
- 0288-06 Intake Valve Actuator #4 Current High (93) — Conditions Which Generate This Code
- System Response — Default torque map, low power, check engine lamp behavior
- Intake Valve Actuator Circuit – Test — System Operation Description
- Related diagnostic codes: 285-05/06 through 290-05/06 (Cylinders 1–6, current low and current high)
- C15 schematic — Illustration 1
- P2 ECM connector pin identification — Illustration 2 (supply and return wiring for actuators 1–6)
- Valve cover connector terminal layout — Illustration 3
- Component locations — check valve, actuator solenoid, face seals, pressure sensor, pressure solenoid
- Test Step 1: Inspect Electrical Connectors and Wiring (45 N pull test, torque check, abrasion inspection)
- Test Step 2: Check for Active Diagnostic Codes using 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 at the Valve Cover Connector
- Test Step 6: Remove Supply and Return Wires from P2 ECM Connector — resistance measurement procedure
- Test Step 7: Verify solenoid connector and harness wiring to ECM connector P2
- Repair procedures: wire replacement, solenoid replacement, ECM replacement
Applicable truck models
This document applies to Caterpillar C15 on-highway truck engines with the MXS serial number prefix (configuration MXS00001-UP). It is valid only for engines equipped with an intake valve actuator system. The procedure covers all six cylinder actuator circuits (cylinders 1 through 6) with DTCs ranging from 285-05 through 290-06. Mechanics working on NKS or RKS prefix C15 engines should verify applicability through the Caterpillar official support portal.
Who needs this 12 pages DTCs actuator manual
Diesel technicians and workshop owners diagnosing low power complaints, check engine lamp illumination, or Cat ET solenoid test results showing “SHORT” on C15 truck engines need this document. It walks through every test step from connector inspection and pull tests through jumper wire fault isolation to ECM replacement decisions.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
Related manuals library
Sản phẩm liên quan cho hãng này
Cùng brand theo taxonomy hiện có trong catalog WooCommerce.
CAT Perkins Pack – Premium Power & Performance by Caterpillar
CAT SIS
