Question about 2003 Toyota Highlander
Check speedo drive gears in extension , if cable driven check inner cable.
Posted on Nov 13, 2014
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Posted on Jan 02, 2017
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Feb 08, 2017 | Ford Cars & Trucks
May 01, 2014 | Cars & Trucks
The engine and automatic transmission in this vehicles drive train are fully electronically controlled by a computer called the PCM (Power Train Control Module). Whenever a problem like this occurs the computer stores a record of the problem (there are of course some exceptions to this, like the fuel pump, engine coolant temperature sensor and MAF sensor for instance) in the form of a fault code in its memory, to read these fault codes you must have the systems memory scanned with a special tool. Once the fault code(s) are read you then must perform the appropriate diagnostic testing to find and resolve the problem(s) DO NOT REPLACE ANY PARTS UNTIL A TRAINED TECHNICAIN HAS DIAGNOSED THE PROBLEM TO AVOID SPENDING YOUR HARD EARNED MONEY ON PARTS THAT MAY NOT CORRECT THE PROBLEM
Aug 24, 2012 | 1999 Chevrolet Malibu
Feb 24, 2012 | 2002 Hyundai Accent
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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