Question about 1995 Dodge Ram 2500
Codes 37 - rear wheel sensor signal eratic circut open
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Posted on Jan 02, 2017
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Nov 22, 2016 | Cars & Trucks
Oct 23, 2013 | 2006 Mini Cooper
Oct 24, 2012 | 1990 Dodge Ram
The Vehicle Speed
Sensor 1 (output shaft rotation sensor) is mounted to the extension case
(from the outside of the case). The sensor outputs a pulse signal which
is transmitted to the TCM where it is converted to vehicle speed.
The transfer clutch
drum is connected directly to the rear wheel driving propeller shaft.
Vehicle speed sensor 1 on the AWD model detects rear-wheel speed.
Speed Sensor 2 provides vehicle road speed information to the ECM. The
ECM uses this data to properly determine ignition and fuel delivery
curves. The sensor consists of a reed switch and magnetic rotor turned
by the speedometer cable.
One rotation of the
magnetic rotor opens and closes the reed switch four times, producing a
digital signal which is converted to vehicle speed by the ECM. The
sensor operates whenever the vehicle is moving with ignition ON. As the
transmission rotates, the speed sensor sends a pulsed on/off signal to
The speedometer uses VSS 2 for it's signal.
Hope this helps (remember to rate this answer).
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