This 14-page troubleshooting guide provides the official CAT C15 speed calibration procedures for diagnostic trouble code 0022-11 — Primary to Secondary Engine Speed Signal Calibration. Published by Caterpillar as media number RENR5088-10, the document walks technicians through systematic test steps covering cluster gear inspection, camshaft backlash verification, engine speed/timing sensor circuit testing, and ECM connector diagnostics for C15 on-highway truck engines.
Official CAT C15 speed calibration document details
| Brand | Caterpillar (CAT) |
| Model coverage | C15 Truck Engine MXS (MXS00001-UP) |
| System / Group | Engine Speed/Timing Sensor Circuit — SMCS 1439-038-VF; 1912-038 |
| Publication no. | RENR5088-10 |
| Year / Revision | Published 01/02/2009, Updated 25/02/2009 |
| Pages | 14 |
| File size | 0.3 MB |
| Format | |
| Language | English |
Document table of contents
- 0022-11 Primary to Secondary Engine Speed Signal Calibration (42) — Conditions Which Generate This Code, System Response
- Test Step 1: Engine Overspeed — Cluster gear alignment and damage inspection
- Test Step 2: Accident — Cluster gear damage assessment after collision
- Test Step 3: Cylinder Head — Camshaft backlash specification check
- Test Step 4: Engine Speed/Timing Sensors — Installation and wiring verification
- Engine Speed/Timing Sensor Circuit – Test — System Operation Description
- Test Step 1: Check for Active Diagnostic Codes using Caterpillar Electronic Technician (Cat ET)
- Test Step 2: Inspect Sensor Installation — O-ring seals, bracket, mounting surface
- Test Step 3: Inspect the Electrical Connectors and the Wiring — P2 ECM connector pinouts
- Test Step 4: Measure the Sensor Resistance through the Engine Harness — Primary (110–200 Ohms), Secondary (1000–1200 Ohms)
- Sensor Replacement Procedure — O-ring lubrication, seating, bracket bolt torque, harness routing
Applicable truck models
This document applies exclusively to the Caterpillar C15 on-highway truck engine, configuration MXS00001-UP. It addresses the primary and secondary engine speed/timing sensors that monitor the crankshaft gear timing ring and camshaft gear timing ring respectively. The guide also references related diagnostic codes 64-08 (Secondary Engine Speed loss of signal) and 190-08 (Primary Engine Speed loss of signal). Connector pin assignments covered include P2-25, P2-35, P2-46, and P2-47 on the ECM harness. For additional product support and parts information, visit Caterpillar Official Support.
Who needs this CAT C15 speed calibration manual
Diesel mechanics and workshop owners troubleshooting DTC 22-11 on C15 engines will find this guide essential. It is also required when diagnosing rough running conditions, check engine lamp illumination related to speed sensor misalignment, or when verifying sensor resistance values after cylinder head removal or vehicle accident repairs.
The full PDF is available in the DiagTechPro manuals library, free account required to download.
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