RAM 3500 Truck 2WD V10-8.0L VIN W (1997)
Oxygen Sensor: Description and Operation
When the Automatic Shut Down (ASD) relay contacts CLOSE, they connect circuits A16 and K125. Circuit K125 splices to supply voltage to the heated
oxygen sensors.
Vehicles with this engine built for use in California uses four heated oxygen sensors. All other V-10 engines use two heated oxygen sensors.
Circuit K141 delivers the signal from the left heated oxygen sensor to the Powertrain Control Module. Circuit K141 connects to cavity A24 of the PCM.
Circuit K41 delivers the signal from the right sensor and connects to cavity A26 of the PCM.
On California vehicles Circuit K441 delivers the signal from the pre-catalyst heated oxygen sensor to the PCM. Circuit K441 connects to cavity A29 of
the PCM. Circuit K341 delivers the signal from the post catalyst sensor and connects to cavity A25 of the PCM.
The PCM provides a ground for the heated oxygen sensor signals (circuits K41, K141, K341 and K441) through circuit K4. Circuit K4 connects to
cavity A4 of the PCM connector.
Circuit Z11 provides a ground for the heater circuit in the sensors.
