Sensor Information Rover 820 Models
Lucas Hotwire Multipoint EFI
values measured on 1990 Model 820SI
Throttle Position Sensor (TPS)
(Information for general guidance only)
Location: On the side of the throttlebody.
Description: Simple track potentiometer 5.5 K Ohm, 3 connections - earth , output and 5 Volt supply.
| Function |
Wire Colour on Sensor |
| 5 V Supply |
Yellow |
| Output Signal to ECU |
Red |
| Earth |
Green |
| Tests |
| Check supply voltage. |
| Check earth connection. |
| Check output voltage varies smoothly as throttle is operated. |
| Check output voltage with throttle in idle position |
| Disconnect plug and check resistance of sensor between supply pin (yellow wire) and earth pin (green wire) is 5.5 K Ohms. |
| |
Volts |
Remarks |
| Supply Voltage |
5.00 |
|
| Output Voltage at Idle Position |
0.325 +/- 0.010 |
To set turn ignition on and with throttle closed slacken the small Torx which hold the sensor to the throttlebody, rotate sensor body until correct voltage is obtained on the output wire |