The PACCAR axle oil code document is the official PACCAR technical reference covering DTCs / Cab (2011 & Newer). This 5-page resource explains rear Drive Axle Oil Temperature Gauge Inoperative – DTC 7703 and DTC 7704, giving technicians factory-accurate information instead of guesswork.
Working directly from the manufacturer’s own document keeps terminology, part numbers, and procedure order consistent with what a dealership or fleet audit expects, instead of relying on a third-party summary that can drop a step or mislabel a component. The preview pages below show the exact layout a technician sees once the file is downloaded, so there are no surprises about scope or formatting before registering for access.
Short factory bulletins like this one are meant to be read alongside the rest of the same document group rather than in isolation: cross-check the surrounding pages and any related codes before ordering parts or signing off a repair, since a single sheet rarely tells the whole diagnostic story on its own.
PACCAR axle oil code: document details
| Brand | PACCAR |
| Model coverage | 2011 and newer trucks |
| System/Group | DTCs / Cab Instrumentation |
| Publication number | PM819003 / KM815056 |
| Year/Revision | 09/16/2011 |
| Pages | 5 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Table of contents
- Rear Drive Axle Oil Temperature Gauge Inoperative – DTC 7703 and DTC 7704
- Symptom description and thermistor sensor overview
- Step-by-step diagnostic procedures using ESA Monitor and Diagnose functions
- CVSG data link wiring checks and continuity testing
- Sensor connector pin verification (Pin A ground, Pin B signal)
- Chassis Node pinout reference and jumper wire testing
- Open circuit diagnosis (DTC 7703) and signal wire continuity
- Short circuit diagnosis (DTC 7704) and ground faults
- Oil temperature sensor resistance table (thermistor values -40°F to 392°F)
- Resistor decade box simulation method for sensor testing
- Known good gauge and test CECU replacement procedures
Applies to the PACCAR axle oil code
The axle oil code applies to DTCs / Cab (2011 & Newer) documented by PACCAR. For complete manufacturer documentation, see PACCAR official website.
Who needs this axle oil code guide
Diesel technicians, fleet maintenance staff, and workshop owners need this axle oil code to diagnose faults and complete repairs using the manufacturer’s own factory data rather than guesswork.
The complete axle oil code PDF is available in the DiagTechPro manuals library. Free account registration is required to download this document.
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