Crank position sensor (CKP) — removal and installation (Harley Sportster XL1200)

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The CKP sensor is a variable reluctance (VR) sensor. It generates an AC signal by sensing the passing of 30 teeth cast into the left side flywheel. Two consecutive teeth are missing in the flywheel to establish a reference point. The CKP sensor sends a signal to the ECM. This signal is used to reference engine position (TDC) and engine speed. The CKP sensor is located near the lower front left corner of the engine crankcase.

Note. This part cannot be repaired. Replace upon failure.

Removal

Warning! To prevent accidental vehicle start-up, which could cause death or serious injury, remove main fuse before proceeding.

1. Remove main fuse.

2. See Figure 6-88. Disconnect CKP sensor harness connector [79A] from wiring harness connector [79B] (4), located along left frame downtube.



3. Remove CKP wire harness from j-clip (3).

4. Remove screw (2). Carefully remove CKP sensor (1) and O-ring from engine crankcase.

Installation

FASTENER	TORQUE VALUE
CKP screw	90-120 in·lbs	10.3-13.6 Nm

Note. The CKP sensor O-ring has a blue teflon coating that provides lubrication during installation. No other lubrication is needed..

1. See Figure 6-88. Carefully install CKP sensor (1) and Oring into engine crankcase with screw (2). Tighten to 90-120 in·lbs (10.3-13.6 Nm).

2. Route CKP sensor wiring harness through j-clip (3).

3. Attach CKP sensor harness connector [79A] to wiring harness connector [79B] (4).

4. Install main fuse.

5. Start engine and verify operation.

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Article about repair motorcycles «Harley Sportster XL1200» (2012-2023): «Crank position sensor (CKP) — removal and installation»: https://motoinstruction.ru/en/Harley/Sportster/XL_2012/electric/equipment/113124 <a href="https://motoinstruction.ru/en/Harley/Sportster/XL_2012/electric/equipment/113124">Crank position sensor (CKP) — removal and installation</a> - article about repair motorcycles «Harley Sportster XL1200» (2012-2023) from section «Equipment and devices». [url=https://motoinstruction.ru/en/Harley/Sportster/XL_2012/electric/equipment/113124]Crank position sensor (CKP) — removal and installation[/url] - article about repair motorcycles «Harley Sportster XL1200» (2012-2023) from section «Equipment and devices».