Toyota prius 3rd Gen Crankshaft Position Sensor (D27)

Toyota Prius 3 ^rd Generation (XW30)

Crankshaft Position Sensor Assembly Wiring Guide: DIY Pinout Diagram

What is: The Crankshaft Position Sensor (CKP) Assembly is a critical engine component that monitors the position and rotational speed of the crankshaft. It sends this information to the engine control unit (ECU), allowing precise control of fuel injection and ignition timing. Proper CKP function ensures smooth engine operation, optimal performance, and fuel efficiency, while a faulty sensor can cause misfires, stalling, or failure to start.

Crankshaft Position Sensor Assembly (90919-05070)

OEM Crankshaft Position Sensor 90919-05070 for 3rd Generation Prius.

Crankshaft Position Sensor 90919-05070 for Toyota Prius 3rd Gen engine.

Toyota Prius 3rd Gen Crankshaft Position Sensor Assembly 90919-05070 installed.

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1. Introduction

      The  Toyota Prius 3rd Generation The Toyota Prius 3rd Generation Crankshaft Position Sensor Assembly (90919-05070) is a crucial component of the engine management system that precisely monitors the crankshaft’s position and rotational speed. By sending real-time signals to the Engine Control Unit (ECU), it enables accurate control of fuel injection and ignition timing, ensuring optimal engine performance, fuel efficiency, and smooth operation. This sensor is located near the crankshaft and plays a key role in reducing emissions while supporting the hybrid system functionality of the Prius.

      When the sensor malfunctions, the ECU can detect irregularities and store Diagnostic Trouble Codes (DTCs) such as P0335 (Crankshaft Position Sensor “A” Circuit Malfunction), P0336 (Crankshaft Position Sensor “A” Range/Performance), and P0339 (Crankshaft Position Sensor “A” Circuit Intermittent). Faulty operation can lead to engine misfires, stalling, or even a failure to start. Designed specifically for the 3rd generation Prius, this assembly ensures reliable performance and full compatibility with Toyota’s hybrid powertrain.

Related parts and Accessories

• Engine Control Unit (ECU / ECM) :- Receives signals from the sensor to control fuel injection, ignition timing, and engine performance.
• Camshaft Position Sensor:-Works together with the crankshaft sensor for precise timing of valve operation and ignition.
• Fuel Injectors:-Rely on ECU timing based on crankshaft position for proper fuel delivery.
• Ignition System:-Spark plugs and coils are triggered according to signals from the crankshaft sensor.
• Hybrid Control Unit (HCU):-In Prius, it may use crankshaft data for hybrid system coordination.
• Timing Components (Chain/Gears):-The sensor monitors crankshaft movement in relation to the timing system.
• Diagnostic Systems:-Onboard diagnostics (OBD-II) monitor sensor output and generate DTCs if faults occur.

2. Crankshaft Position Sensor Assembly Wiring Diagram & Pinout

A. Connector Location

• Crankshaft Position Sensor Assembly Position:


• Connector Type:
  • D14 (2 pin) White housing

B. Wiring Table

Crankshaft Position Sensor (D27)

D27 TERMINALS OF Crankshaft Position Sensor CONECTOR

Terminal No	Symbol (Pin Definition)	Wiring (Color Code) & Color	Electrical Paths
D27-1	NE	(B) Black	➔ D28 74 (NE+) [Engine Control Module]
D27-2	NE-	(W) White	➔ D28 120 (NE-) [Engine Control Module]

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