Parts for your 2001 Toyota Hilux-Crank angle sensor

2001 Toyota Hilux crank angle sensor: what it does and how to look after it

Is a crank-angle sensor used on a 2001 Toyota Hilux? Yes—on the vast majority of 2001 Hilux models sold in AU/NZ it’s a relevant, fitted component. Toyota’s factory repair manuals and parts catalogues list a crankshaft position (crank angle) sensor for the EFI petrol engines (3RZ‑FE 2.7 and 5VZ‑FE 3.4) and for electronically controlled diesels such as the 1KZ‑TE. See Toyota Hilux/4Runner Repair Manual engine control sections for 3RZ‑FE, 5VZ‑FE and 1KZ‑TE, plus the Toyota Electronic Parts Catalog for AU/NZ market models RZN1##/VZN1##/KZN1## (circa 2000–2002). Note: some purely mechanical 5L diesels of the era may not have a separate crank sensor, as timing is governed within the mechanical injection pump—on those, a stand‑alone crank‑angle sensor isn’t applicable.

On a 2001 Hilux that does have one, the crank angle sensor (often called the crankshaft position sensor) is the ECU’s key reference for engine speed and the exact position of the crank. It’s how the ECU knows when to fire the coils and when to inject fuel, and it’s used to detect misfires. If it drops out, you’ll usually get hard starting, a stall under load, or a no‑start with a check engine light—commonly storing codes like P0335/P0336.

It’s a low‑maintenance bit of kit, but it does live in a harsh spot—typically by the crank pulley or timing cover—so heat, oil seepage, or a frayed loom can upset the signal. It isn’t a scheduled replacement item, but it’s smart to give it attention when other front‑of‑engine work is on the cards (e.g., timing belt on 1KZ‑TE) or every few years during servicing.

• Signs it’s crook: long crank when hot, sudden cut‑out, rough idle, poor fuel economy, or DTCs P0335/P0336.
• Quick checks: inspect the connector for green crusties, cracked insulation near the plug, and ensure the sensor mounting face is clean and fully seated.

Replacing it is pretty straightforward: disconnect the battery, unplug the sensor, remove the small retaining bolt, ease out the sensor, wipe the bore clean, lightly oil the O‑ring on the new unit, refit and nip the bolt to around 8–10 Nm. On engines that specify an air gap, follow the repair manual spec. Clear any fault codes and go for a drive, no relearn is usually required.

For long life, keep oil leaks sorted so the connector stays dry, secure the loom away from belts, and use a quality OE or reputable aftermarket sensor. A quick look under the bonnet each 10,000 km during regular servicing can save a roadside headache later.

Where is the crank angle sensor on a 2001 Hilux?

On the 3RZ‑FE petrol, it’s mounted at the front of the engine near the crank pulley/oil pump housing. On the 5VZ‑FE V6, it’s also down by the crank pulley. On the 1KZ‑TE diesel, it’s positioned near the timing belt area at the front of the block. Access varies by engine and accessories, sometimes removing a splash shield or the fan shroud makes life easier.

What fault codes point to a bad crank angle sensor on this model?

Typical ECU codes are P0335 (Crankshaft Position Sensor “A” circuit) and P0336 (range/performance). Intermittent versions can be triggered by a loose connector or heat‑soaked sensor. Always check the wiring and the sensor mounting before assuming the sensor itself has failed.

Does it need a relearn after replacement?

Generally no. On these Hilux variants, the ECU uses the live signal and doesn’t require a special crank relearn. Clear any stored codes, confirm stable RPM and timing data on a scan tool, and take it for a test drive. If a code returns, recheck connector pin tension, sensor air gap (if specified), and engine earths.