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How-to: Speedometer Calibration for the 1998-2006 Dodge Ram
This how-to covers DRBIII scan toolcalibration forspeedometers on 1998-2006
Dodge Ram trucks—plusmany Jeep models of this
(If bandwidth permits,view this video in 'full-screen' mode and HD 1080P
the OBD-1 and OBD-2 diagnostics era, the Chrysler DRBIII™ scan tool is the ultimate calibration and diagnostic scan
tool. While StarScan™ and TechConnect™ have become more recent tools, a DRBIII scanner is optimal for servicing
1987-2006 Jeep and Dodge Ram trucks!
American Axle & Manufacturing ("AAM") builds OEM
axles for popular trucks like the 2003-up Dodge Ram. Our '05 Ram 3500 4WD came with an AAM 11.5" ("Corporate")
rear axle and an AAM 9.25" front axle. The tone ring, sandwiched between the ring gear and differential case, is
the signal for the ABS sensor and speedometer.
At the upper left of the differential housing
cavity, in line with the tone ring, is the ABS and speed signal sensor. The sensor sends a signal to the ABS
module and PCM. The speedometer and powertrain functions depend upon an accurately calibrated speed
The DRBIII scan tool enables speedometer calibration on 1998-2006 Chrysler vehicles. For
models with a tone ring ABS sensor, the calibration involves changes in tire revolutions per mile. (See
the HD video how-to for details.)
Bible™by Moses Ludel—available for more than
two decades and a best
seller! Each of Moses Ludel's Jeep® books earned an official Mopar® part
number!For 4x4 Jeep®, Truck and SUVtechnical information, make this magazine your professional
Ludel's Ford F-truck and GM truck books earned official Ford Motor Company 'SVO' and GM Motorsport part
numbers! The Toyota Truck and Land
Cruiser book by
Moses Ludel is a classic among vintage Toyota pickup and FJ40 Land Cruiser