This is the official PACCAR transmission oil temperature diagnostic manual covering DTC codes 17703 and 17704. Published by PACCAR under publication number PM819003/KM815056, this 5-page electrical system service manual provides step-by-step troubleshooting procedures for mechanics diagnosing inoperative PACCAR transmission oil temperatures on 2011 and newer cab models.
The document is designed for technicians using the Electronic Service Analyst (ESA) hardware and software diagnostic tool to identify multiplexed instrumentation faults affecting the transmission oil temperature gauge circuit.
Document details and specifications — PACCAR transmission oil
| Brand | PACCAR |
| Model coverage | 2011 & Newer cabs |
| System/Group | DTCs / Cab Electrical |
| Publication number | PM819003/KM815056 |
| Revision date | 09/16/2011 |
| Pages | 5 |
| File size | 0.1 MB |
| Format | |
| Language | English |
Table of contents
- Transmission Oil Temperature Gauge Inoperative
- DTC 17703 and DTC 17704 overview
- Thermistor sensor measurement principles
- ESA diagnostic procedure — Monitor function
- ESA diagnostic procedure — Simulate function
- CVSG data link wiring verification
- DTC 17703 diagnosis — Open circuit in transmission oil temp circuit
- DTC 17704 diagnosis — Short circuit in transmission oil temp circuit
- Sensor harness connector continuity testing
- Oil temperature sensor resistance and temperature reference table
- Jumper wire testing procedures
- Sensor replacement verification
Applies to these models
This PACCAR transmission oil temperature diagnostic manual applies to all PACCAR trucks equipped with 2011 and newer cab electrical systems using the CECU (Cab Electronic Control Unit) and multiplexed instrumentation clusters. The procedures cover 52-pin CECU connector diagnostics and CVSG daisy-chain gauge wiring configurations. Visit the PACCAR official website for additional technical resources and truck specifications.
Who needs this transmission oil temperature manual
Heavy-duty truck mechanics and workshop owners diagnosing and repairing inoperative transmission oil temperature systems should reference this manual. Technicians performing electrical system repairs on 2011 and newer PACCAR cabs and possessing ESA diagnostic software experience will find the detailed DTC 17703 and DTC 17704 troubleshooting procedures essential for efficient fault isolation and component replacement decisions.
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