The PACCAR MX P1335 crankshaft diagnostic guide is the official 2013 EPA service manual covering fault code P1335: Crankshaft speed signal—Disturbed or no signal during engine start. Published by PACCAR, this 6-page technical document provides mechanics and workshop owners with complete troubleshooting procedures, wiring diagrams, electrical specifications, and step-by-step repair validation for the MX engine family.
This manual is essential for diagnosing and resolving crankshaft sensor failures, flywheel damage, and wiring harness issues that trigger the P1335 fault code on PACCAR MX diesel engines.
Document details and specifications — PACCAR MX P1335
| Brand | PACCAR |
| Model coverage | MX Engines (EPA 2013) |
| System/Group | DTCs / MX Engines (EPA2013) |
| Publication number | Not specified |
| Year/Revision | 2013 |
| Pages | 6 |
| File size | 0.6 MB |
| Format | |
| Language | English |
Table of contents
- Code number and fault code description
- Fault code information (MIL trips, drive cycle recovery)
- Description of components and system effects
- Location of components
- Diagnostic conditions and set/reset procedures
- Electrical diagrams and wiring harness connector details (D420.A, F552)
- Technical data: crankshaft sensor component checks and resistance/voltage specifications
- Possible causes and additional information
- Diagnostic step-by-step procedure (11 steps: 1335a through 1335k)
- Verification drive cycle and repair validation
Applies to these models
This PACCAR MX P1335 manual applies to 2013 EPA-compliant PACCAR MX diesel engines equipped with the PCI ECU (D420) and crankshaft sensor (F552). The guide covers the crankshaft speed signal monitoring system used in PACCAR medium and heavy-duty trucks, including diagnostic steps for sensor resistance checks, AC voltage measurements at engine start, idle, and 1200 rpm operation. For official PACCAR engine and truck documentation, visit PACCAR official website.
Who needs this PACCAR MX P1335 crankshaft manual
Diesel mechanics, heavy-truck technicians, and workshop owners diagnosing crankshaft signal faults on PACCAR MX engines need this manual. The PACCAR MX P1335 crankshaft guide is indispensable for identifying sensor failures, flywheel damage, wiring continuity issues, and connector pin corrosion that prevent proper engine start and cause reduced torque operation.
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