Parts for your 2010 Daihatsu Bego-Camshaft sensor

2010 Daihatsu Bego Camshaft Sensor

The 2010 Daihatsu Bego (also sold as the Toyota Rush/Daihatsu Terios J200-series) is fitted with a camshaft position sensor. Technical references that confirm this include the Daihatsu Terios J200/J210 Workshop Manual (Engine Control System, EM section), Toyota/Daihatsu Electronic Parts Catalogue listings for the 3SZ‑VE/ K3‑VE engines, and the factory DTC index that includes P0340/P0341 for the camshaft position sensor circuit. On these DOHC VVT‑i engines, the cam sensor is essential for sequential fuel injection and intake cam phasing, so it’s absolutely relevant to the model.

On a 2010 Bego, the camshaft sensor’s job is to tell the ECU exactly where the intake cam is in its rotation. That lets the ECU fire the injectors at the right time, stabilise idle, and command VVT‑i to sharpen response and fuel economy. When the sensor goes out of whack, the ECU loses phase information, which can lead to hard starting, sluggish performance, rough running, and a flashing or steady check‑engine lamp. Because the sensor reads a target on the cam, clean oil and a healthy timing system help it do its best work.

There’s no scheduled replacement for the camshaft sensor, but there are a few smart maintenance habits for a Bego owner:

• Keep engine oil and filters fresh, dirty oil can contaminate the sensor and its O‑ring.
• Inspect the wiring and connector under the bonnet for heat hardening, oil weep, or loose pins.
• If chasing a P0340/P0341, check the crank sensor and timing chain condition too, as correlation matters.

Replacement is straightforward for a home mechanic with a basic tool kit. Disconnect the battery, unclip the connector, remove the small retaining bolt, and gently twist the sensor free from the cylinder head near the intake cam area. Lightly oil the new O‑ring, seat the new sensor squarely, and tighten the bolt to factory spec (typically around 8–10 N·m for an M6 fastener, confirm in the service manual for your engine code). Clear the codes, then start the engine and verify there’s no leak and the idle is stable. Genuine or quality aftermarket parts are fine, avoid no‑name sensors that can cause intermittent faults. If a relearn is needed, a short road drive with a few steady‑state kilometres usually lets the ECU resync cam/crank signals.

• Common symptoms of a failing cam sensor on a Bego:
  • Hard starting, especially hot
  • Stumbling idle or stalling at lights
  • Poor fuel economy and flat spots
  • Check‑engine light with P0340/P0341

Technical sources: Daihatsu Terios J200/J210 Workshop Manual (Engine Control System), Toyota/Daihatsu EPC (Engine > Sensor, Cam Position), 3SZ‑VE/K3‑VE DTC listings for P0340/P0341.

FAQs

Where is the camshaft sensor on a 2010 Daihatsu Bego?
It’s mounted on the cylinder head near the intake cam gear end, accessible from the top of the engine bay. Look for a small two‑wire or three‑wire sensor with a single retaining bolt and an O‑ring seal. On right‑hand‑drive Begos, you’ll typically find it toward the front left of the engine under the plastic cover.

Remove the engine cover, unplug the connector, and you can see the retaining bolt. Always check for oil weep around the seal, which can hint at a tired O‑ring rather than a failed sensor.

Do I need a relearn after changing the camshaft sensor?
Most Begos will not need a special scan‑tool relearn. The ECU generally re‑establishes cam/crank correlation after a clean start and a short drive cycle. Clear any stored codes, idle the engine until warm, then take it for a gentle run with steady throttle for a few kilometres.

If a code returns immediately, recheck the connector, wiring integrity, and timing chain condition, as a correlation fault isn’t always the sensor itself.

What else should be checked if P0340/P0341 keeps coming back?
Along with the cam sensor, inspect the crankshaft sensor, the harness between both sensors and the ECU, and the timing chain for stretch or misalignment. Low battery voltage and poor engine grounds can also trigger correlation codes.

On higher‑kilometre cars, a stretched chain or worn tensioner can cause phase drift. Fixing the underlying timing issue will usually stop the cam sensor codes from reappearing.