198
DTC 522712 ETC TPS 1 Range
Conditions for Setting the DTC
Pedal Position Voltage Table
Code Definition Condition Limit Comment
91-2
Pedal Sensor 1 to Pedal Sensor 2
Coherence
Differ by more
Then
12 to
25 %
Varies with Pedal
Position
522712-3 Pedal Sensor 1 Short to Ground Less then 0.09 volts
522712-4 Pedal Sensor 1 Short to High Greater Then 4.97 volts
522713-3 Pedal Sensor 2 Short to Ground Less then 0.09 volts
5227132-4 Pedal Sensor 2 Short to High Greater Then 2.49 volts
Circuit Description
There are two pedal position sensors on the electronic foot pedal to signal to the ECU exactly how much
throttle the driver has requested. The sensors are Hall Effect type not variable resistance sensors. The two
sensors are provided as a safety feature in case one sensor fails. While the system looks at both sensors,
sensor 1 is used to operate the system. The diagnostic tool allows the technician to monitor three signals
which relate to the foot pedal. The first is pedal position, the system automatically scales the full travel of
the pedal to equal 0 to 100 percent pedal position. The second and third signals are sensor 1 and sensor 2
voltages. Sensor 1 voltage can range from 0.66 to 4.95 volts but will usually be in the range of 1.0 to 3.6
volts. Sensor 2 voltage can range from 0.33 to 2.48 volts but will usually be in the range of 0.5 to 1.8 volts.
(Sensor 2 should read ½ of sensor 1).
To Next Page
Loading...