This CAT C15 289-06 actuator troubleshooting document provides the official Caterpillar diagnostic procedure for fault code 0289-06 — Intake Valve Actuator #5 Current High (94) — on C15 on-highway truck engines (MXS prefix). The 12-page PDF walks technicians through electrical connector inspections, solenoid tests using Cat Electronic Technician (ET), short-circuit verification at the valve cover and ECM connectors, and component replacement steps.
Official CAT C15 289-06 actuator document details
| Brand | Caterpillar (CAT) |
| Model coverage | C15 Truck Engine MXS (On-Highway, MXS00001-UP) |
| System / Group | Intake Valve Actuation System — DTCs 285 through 290 (current high & current low) |
| 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
- 0289-06 Intake Valve Actuator #5 Current High (94) — 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 (Illustration 1), P2 ECM connector pin-out (Illustration 2), valve cover connectors (Illustration 3)
- Location of components — check valve, actuator solenoid, face seals, pressure sensor, pressure solenoid (Illustration 4)
- 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 Wires of the Suspect Solenoid at the Valve Cover Connector
- Test Step 6: Resistance measurement — supply and return wires to P1, P2, and engine ground
- Test Step 7: Temporarily connect new solenoid to verify repair
Applicable truck models
This procedure applies to Caterpillar C15 on-highway truck engines with serial prefix MXS (configuration MXS00001-UP) equipped with intake valve actuators. The diagnostic codes covered span all six cylinders: DTCs 285-05/06 through 290-05/06. The ECM uses the P2 connector with dedicated supply pins (P2-53, P2-61, P2-77) and return pins (P2-100 through P2-113) for actuators 1–6. Workshops servicing CAT-powered Class 8 trucks — including Kenworth, Peterbilt, and Freightliner models fitted with the C15 MXS engine — will find this guide directly relevant. For additional engine support resources visit Caterpillar official support.
Who needs this CAT C15 289-06 actuator manual
Diesel mechanics and workshop owners diagnosing low-power complaints or check-engine-lamp illumination tied to intake valve actuator solenoid faults on C15 engines need this manual. It is essential for anyone performing the Cat ET “Intake Valve Actuator Solenoid Test” and tracing wiring between the valve cover connectors and the ECM.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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