Parts for your 2002 Toyota Hilux-Camshaft sensor

2002 Toyota Hilux camshaft sensor — what’s fitted and what isn’t

On a 2002 Toyota Hilux, whether there’s a camshaft sensor depends on the engine. Toyota’s workshop literature and parts catalogues note a Camshaft Position Sensor (CMP, often called the “G” signal) on EFI petrol models like the 3RZ‑FE, while the popular diesel options of the day (5L mechanical-injection and 1KZ‑TE) don’t use a separate cam sensor — they rely on crank and/or injection-pump timing signals instead. See Toyota’s Electrical Wiring Diagram for Hilux KZN/LN/RZN platforms (CMP shown on petrol circuits only), the Toyota Electronic Parts Catalogue listings for RZN-series Hilux (3RZ‑FE) showing a CMP, and general references such as Haynes HiLux Diesel & Petrol manuals covering 1997–2005, which describe the “G/NE” sensor strategy on petrol and pump/crank sensing on diesels.

Given a large number of Aussie and Kiwi 2002 Hilux utes run the 3RZ‑FE petrol, the camshaft sensor is very much a relevant part on those vehicles.

If it’s a 3RZ‑FE petrol Hilux, the camshaft sensor’s job is to tell the ECU where the cam is in its rotation so it can sync fuel injection and spark. It’s the timing referee — helping the engine fire smoothly, start crisply, and keep emissions tidy. When it goes crook, owners may notice hard starting (especially warm), rough idle, misfires, a flat spot off the mark, poor fuel economy, or a check-engine light with codes like P0340/P0341.

There’s no set replacement interval, but it’s smart to treat the CMP as “inspect and clean” during major services. On the 3RZ‑FE it sits at the cylinder head/timing area — easy to get to. A quick check for oil seeping into the connector, brittle wiring from heat, or metal fuzz on the sensor tip can save headaches. If contamination is minor, a careful clean with electronics-safe cleaner can help. If the sensor is cracked, oil-soaked internally, or triggering repeat codes, replacement is the go.

Handy servicing pointers:

• Confirm your engine code (e.g., 3RZ‑FE vs 5L/1KZ‑TE) before ordering parts.
• Use a quality OEM-equivalent sensor and a fresh O‑ring/seal to prevent future leaks.
• Disconnect the battery, unplug the connector, remove the retaining bolt, swap the sensor, lightly lube the O‑ring, and refit. Don’t overtighten the bolt into the alloy head.
• Clear fault codes and check live data, the ECM usually doesn’t need special relearns on the 3RZ‑FE.
• If symptoms persist, inspect the crank sensor, timing condition, and wiring harness — a bad earth or chafed loom can mimic a dud CMP.

Note: If the ute is a 5L or 1KZ‑TE diesel, there’s no dedicated camshaft sensor to replace — diagnosis should focus on crank/pump timing sensors, glow system, fuel supply, and pump control hardware instead.

Popular questions

Where is the camshaft sensor on a 2002 Toyota Hilux?
On 3RZ‑FE petrol models it’s mounted on the cylinder head/timing cover area, with a small two- or three‑pin connector. On 5L and 1KZ‑TE diesels there isn’t a separate cam sensor, the ECU uses crank and injection‑pump timing inputs instead.

What fault codes point to a bad camshaft sensor?
Common codes are P0340 and P0341. They can be caused by a failed sensor, but also by wiring issues, poor connectors, incorrect cam/crank correlation, or a stretched timing chain/belt. Always rule out harness and timing problems before slinging a new sensor.

Can a camshaft sensor be cleaned or must it be replaced?
If the tip has light debris or there’s minor oil ingress at the plug, a careful clean and reseal can restore it. If it’s internally failed, cracked, or throwing recurring codes after cleaning, replacement is the reliable fix.