What wire color is the signal return for the ECT, TP, and EVP sensors on the 5.8L California engine?

Circuit 359, colored GY/R (gray/red), runs to the ECT sensor, TP sensor, and EVP sensor through splice S161.

Which PCM pins connect to the EGR and sensor circuits on this diagram?

Top-row PCM pins shown are 2, 33, 5, 7, 47, and 27; bottom-row pins are 4, 16, 36, 56, 20, 48, 26, and 13. Circuit 360 BR/PK (EGR solenoid) goes to pin 33, 354 LG/R (ECT) to pin 7, 355 GY/W (TP) to pin 47, and 352 BR/LG (EVP) to pin 27.

What does the Throttle Position (TP) sensor do according to this diagram?

It is a potentiometer with a DC output that varies with throttle plate angle. By monitoring TP sensor output, the PCM calculates fuel delivery requirements based on driver demand.

What connector is used for the Throttle Position sensor?

The TP sensor connects through connectors C1024M and C1024F.

Where does the PCM ground on this circuit?

Circuit 57 BK from PCM pin 20 goes to ground G104; the diagram references 'See Grounds Page 10-2'.

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1995 Ford Bronco 5.8L California Engine Controls Wiring Diagram - EGR, TP, ECT

Engine Controls 5.8L California wiring diagram page 25-9 with ECT, TP and EGR sensor circuits

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Wiring diagram of California 5.8L sensor circuits including coolant temp, throttle position, EGR control, and EGR valve position sensors.

AI caption February 2011 · Photo 471 of 1799

This document is page 25-9 of a Ford factory wiring diagram set, covering Engine Controls for the 5.8L engine (California emissions calibration). It shows the wiring between the Powertrain Control Module (PCM) and four EGR/engine-management components: the EGR Control Solenoid (connector C180), the Engine Coolant Temperature (ECT) Sensor (C183), the Throttle Position (TP) Sensor (C1024M/C1024F), and the EGR Valve Position (EVP) Sensor (C182). Explanatory callouts describe each component's function: the ECT thermistor's resistance drops as coolant temperature rises, the TP sensor is a potentiometer indicating throttle plate angle, and the EVP sensor reports EGR valve position to the PCM. Wire circuits and colors are labeled, including 361 R, 359 GY/R (signal return), 360 BR/PK, 354 LG/R, 355 GY/W, 351 BR/W, and 352 BR/LG, with pass-through connectors C101F/C101M, splices S161 and S135, and PCM connector C185. PCM pin numbers (2, 33, 5, 7, 47, 27 and 4, 16, 36, 56, 20, 48, 26, 13) are identified, along with circuits leading to the ignition system (page 21-1), data link connectors (DLC), grounds (G104, page 10-2), and the brake pedal circuit (511 LG) used with the E4OD transmission. Cross-references to pages 25-8, 90-2, 21-1, and 10-2 are included.

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Frequently asked questions

What wire color is the signal return for the ECT, TP, and EVP sensors on the 5.8L California engine?: Circuit 359, colored GY/R (gray/red), runs to the ECT sensor, TP sensor, and EVP sensor through splice S161.
Which PCM pins connect to the EGR and sensor circuits on this diagram?: Top-row PCM pins shown are 2, 33, 5, 7, 47, and 27; bottom-row pins are 4, 16, 36, 56, 20, 48, 26, and 13. Circuit 360 BR/PK (EGR solenoid) goes to pin 33, 354 LG/R (ECT) to pin 7, 355 GY/W (TP) to pin 47, and 352 BR/LG (EVP) to pin 27.
What does the Throttle Position (TP) sensor do according to this diagram?: It is a potentiometer with a DC output that varies with throttle plate angle. By monitoring TP sensor output, the PCM calculates fuel delivery requirements based on driver demand.
What connector is used for the Throttle Position sensor?: The TP sensor connects through connectors C1024M and C1024F.
Where does the PCM ground on this circuit?: Circuit 57 BK from PCM pin 20 goes to ground G104; the diagram references 'See Grounds Page 10-2'.