What size fuse protects the starter circuit in the engine compartment fuse/relay box?

A 40 A fuse in the engine compartment fuse/relay box feeds the starter relay on circuit 1050 (LG/P).

What does the DTR sensor do in the starting circuit?

Per the diagram's note, the DTR (Digital Transmission Range) sensor completes the start circuit in Park and Neutral, and also completes the back-up lamp circuit.

What wire color goes from the starter relay to the starter solenoid?

Circuit 33, a W/PK (white/pink) wire, runs from the starter relay through connectors C130M/C130F and C148 to the starter motor/solenoid.

Which fuse in the interior fuse panel is in the start circuit?

Fuse 7, a 10 A fuse in the I/P fuse panel (page 13-10), carries ignition switch start feed on circuit 32 (R/LB) to circuit 262 (BR/PK) toward the DTR sensor.

What does the starter relay do?

Per the callout, when energized it provides voltage and current to the starter motor internal relay (solenoid) coil, which then closes a switch to apply battery voltage to the starter motor.

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Ford Taurus 3.0L 2V Starting System Wiring Diagram - Starter Relay & DTR Sensor

3.0L 2V starting-system wiring diagram with battery, starter relay and ignition switch

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Starting-system wiring diagram showing battery, starter motor relay, DTR sensor and ignition switch circuits.

AI caption June 2003 · Photo 45 of 388

This document is a starting system wiring diagram for a Ford vehicle with the 3.0L 2V engine (noted "per Ford Powertrain"). It shows the complete starter circuit: battery power feeds through a 40 A fuse in the engine compartment fuse/relay box on circuit 1050 (LG/P) through connector C129 to the starter relay. The relay output travels on circuit 33 (W/PK) through connectors C130M/C130F and C148 to the starter motor/solenoid, which contains pull-in and hold windings. The ignition switch (hot at all times) feeds circuit 32 (R/LB) through connector C293 to fuse 7 (10 A) in the I/P fuse panel, then on circuit 262 (BR/PK) to the Digital Transmission Range (DTR) sensor via connector C171. The DTR sensor completes the start circuit in Park and Neutral (and the back-up lamp circuit), returning on circuit 1039 (T/R) and *33 (W/PK) to the starter relay coil. Grounds are at G104 (circuit 57 BK), with references to grounds pages 10-2, 10-4, and 14-4, power distribution pages 13-1 and 13-5, and component pages 13-3, 13-9, 13-10, and 29-4. Callout notes explain the starter relay and solenoid switch operation.

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Frequently asked questions

What size fuse protects the starter circuit in the engine compartment fuse/relay box?: A 40 A fuse in the engine compartment fuse/relay box feeds the starter relay on circuit 1050 (LG/P).
What does the DTR sensor do in the starting circuit?: Per the diagram's note, the DTR (Digital Transmission Range) sensor completes the start circuit in Park and Neutral, and also completes the back-up lamp circuit.
What wire color goes from the starter relay to the starter solenoid?: Circuit 33, a W/PK (white/pink) wire, runs from the starter relay through connectors C130M/C130F and C148 to the starter motor/solenoid.
Which fuse in the interior fuse panel is in the start circuit?: Fuse 7, a 10 A fuse in the I/P fuse panel (page 13-10), carries ignition switch start feed on circuit 32 (R/LB) to circuit 262 (BR/PK) toward the DTR sensor.
What does the starter relay do?: Per the callout, when energized it provides voltage and current to the starter motor internal relay (solenoid) coil, which then closes a switch to apply battery voltage to the starter motor.