RX Module 87340-4403 WST Star Gauge System Data Star Beginning in April 2005, the PX and PX-A modules were replaced by air lines that are routed to each individual Star Gauge. These gauges convert the air pressure into an electrical signal. The Star Gauge databus supplies power, ground, and backlighting information for these gauges. Star Gauges 87340-4404 Star Gauges are secured in place with a lock ring, which can be removed easily using a removal key that fits into the lock ring. These tools can be ordered through your WS dealership Beginning with EPA10 vehicles, the engine controller no longer offers a J1587 databus.
The engine, transmission, ABS, and most of the other optional electronic devices on the vehicle now communicate using J1939 protocol. 2” Gauge removal tool 87340-4404 3” Gauge removal tool 87340-4403 The EPA10 RX module EPA 2007 PX Module This new redesigned module, incorporates the functions of the earlier RX and PX modules in one unit that also performs a gateway function. The EPA10 RX module performs the following functions. EPA 2007 RX Module * Converts sensor and voltage inputs into J1587 (PI bus) data. ECC * Converts four air pressure inputs into J1587 (PI bus) data.
* Gateway Function converts J1939 data that is required for the DataStar and the Star Gauges into J1587 protocol (PI bus) data. NOTE: The J1587 data network is also called the PI bus in some instances. The speedometer uses the J1587 data from the RX module as the source of data for the Star Gauges. 2010 RX Module The Datastar is also on the J1587 (PI bus) network and uses this data. The RX gateway module is located on the underside of the cab below the steering shaft, near the clutch linkage. 24 to 12 Volt Converter The 24 to 12 volt converter is used on vehicles with 24 volt electrical systems.
It is connected between the speedometer and the dash wiring harness and reduces voltage to 13.5 volts which is needed by the Starguage and Datastar system Page 1A-7 Rev (2.3) - Feb 2015