TPS Calibration (With Pics) for Honda Lovers - Mechanical Jun 22, 2012Adjustment of TPS Sensor, Honda City 2004- 2007 using 5 Volts Phone Adopter. I am sorry, information provided earlier regarding Honda City TPS Sensor was wrong. According to the link provided by @ coolsmart . Output Voltage should be .5 Volts once Throttle is fully closed and value should be 4.8 Volts at WOT. Fuel and Emissions System Description Technical Information K20 Swap Wiring - Hondata Technical Information K20 Swap Wiring. For those with short reading spans. You must use a main relay. Do not wire the main relay (E7) or fuel pump (E1) to 12V. This will damage the ECU. Both E1 and E7 are outputs which switch on relays by grounding the ECU output and do not like being forced to eat 12V.