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Parts for your 2009 Daihatsu Bego-Camshaft sensor
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2009 Daihatsu Bego camshaft sensor: fitted, what it does, and how to look after it
Yes, the 2009 Daihatsu Bego uses a camshaft position sensor. This is confirmed by factory documentation for the J200-series Bego/Terios/Toyota Rush fitted with the 3SZ‑VE 1.5-litre DOHC VVT‑i engine. Technical sources that list and describe the sensor include: Daihatsu J200/J210 Series Service Manual (Engine Control System, 3SZ‑VE, model years circa 2006–2010), Toyota Rush/Terios J200 service data, and the Daihatsu Electronic Parts Catalogue (EPC), all of which specify a camshaft position sensor on the cylinder head for this engine.
On the 2009 Daihatsu Bego, the camshaft sensor keeps the engine control unit in the loop about the exact position of the intake cam. That lets the ECU sync fuel injection with the crank signal, run VVT‑i accurately, and detect misfires. When it’s healthy, cold starts are crisp, idle is smooth, power delivery is tidy, and fuel use stays in check. When it’s not, the Bego can be a bit of a grump: long cranking, rough idle, flat spots, sudden loss of power, and the MIL lighting up with codes like P0340, P0341 or P0343 are common gives.
- Typical symptoms: hard starting, stumble or stall at idle, hesitant acceleration, reduced economy, and the check engine lamp on.
- Common causes: heat-soaked or oil-contaminated sensor, brittle wiring near the head, poor connector contact, or a leaking O‑ring.
It’s not a scheduled replacement item in Australia or New Zealand, but it’s smart to give it a look during routine servicing. Under the bonnet, the sensor sits on the cylinder head near the timing chain end. Check the connector and loom for chafing, make sure there’s no engine oil wicking into the plug, and replace the O‑ring if there’s any seepage. Keeping to regular oil and filter changes helps too, because clean oil is friendlier to VVT‑i control and sensor health.
- If replacement is needed, choose an OEM‑quality part compatible with the 3SZ‑VE.
- Disconnect the battery, unplug the sensor, remove the retaining bolt, and withdraw the sensor carefully to avoid nicking the O‑ring seat.
- Lightly oil a new O‑ring, refit the sensor, and tighten the bolt to workshop‑manual spec. Reconnect, then clear codes and road test. Most vehicles won’t need programming, the ECU relearns cam/crank sync after a short drive cycle.
Done right, a fresh camshaft sensor restores clean starts and smooth running, and keeps the 2009 Daihatsu Bego’s VVT‑i doing what it should.
Popular questions about the 2009 Daihatsu Bego camshaft sensor
Where is the camshaft sensor located on a 2009 Bego?
It’s mounted on the cylinder head at the timing chain end, near the top of the engine. Look for a small sensor with a single retaining bolt and a two‑ or three‑pin connector. Access is from above with basic hand tools.
What fault codes point to a camshaft sensor issue?
Common codes include P0340 (camshaft position circuit), P0341 (range/performance), and P0343 (circuit high). Occasional crank/cam correlation faults can also pop up if the timing chain has excessive slack, so it’s worth checking mechanical timing if codes persist after replacement.
Do I need to program a new camshaft sensor?
Generally, no. On the 3SZ‑VE the ECU will resynchronise the cam and crank signals once the engine is started and warmed. After fitting, clear any stored codes, let it idle for a few minutes, and take a short drive so the ECU can relearn.
