Parts for your 2002 Daihatsu Terios-Crank angle sensor

2002 Daihatsu Terios crank angle sensor – what it does and how to look after it

Technical sources confirm the 2002 Daihatsu Terios is fitted with a crank angle sensor (also called a crankshaft position sensor). The Daihatsu Terios J100/J102 Series Workshop Manual (Engine Control – EFI) lists the NE (crank) sensor and G (cam) sensor as primary inputs for ignition and injection on the K3‑VE engine used in 2002 models. This aligns with DENSO engine management documentation used by Daihatsu, which relies on the crank sensor to calculate engine speed and exact crank position for spark and fuel timing. So yes—on a 2002 Terios, the crank angle sensor is absolutely relevant and in service.

On the road, that little sensor is the timing anchor. It reads a toothed wheel on the crankshaft and tells the ECU exactly when each cylinder is ready. If it goes out of spec, drivers can see hard starting, random stalling, misfires, sluggish performance, or the check engine light with codes like P0335/P0336.

As part of routine servicing, it’s worth a quick look whenever the front of the engine is accessible. The sensor on the K3‑VE sits low at the timing cover, reading the crank wheel just behind the harmonic balancer. Heat, oil mist and road grime can cake on the tip, light cleaning can help restore a clean signal if the sensor is otherwise healthy.

• Tell-tale symptoms: intermittent no‑start when hot, uneven idle, sudden cut‑out, poor fuel economy, and stored P0335/P0336.
• Basic checks: inspect the connector for green corrosion or a loose fit, trace the loom for chafing, ensure the sensor’s O‑ring isn’t weeping oil.

Replacement is straightforward: disconnect the battery, raise the front safely, unplug the sensor, remove the single retaining bolt, swap in a new sensor with a fresh O‑ring, and refit the connector. Avoid levering on the plastic body and don’t overtighten the fastener into the alloy cover. After refitting, clear fault codes and let the ECU relearn idle by allowing it to settle at operating temperature without accessories on. No programming is normally required—if the wiring and trigger wheel are good, it’ll fire right up.

Choosing parts? A quality OEM‑equivalent sensor is fine for most Terios drivers in Australia and New Zealand. If the vehicle does higher kilometres on corrugated roads or sees creek crossings, prioritise a well‑sealed unit and refresh the connector boot to keep moisture out under the bonnet.

• Where is the crank angle sensor on a 2002 Daihatsu Terios?
  On the K3‑VE engine, it’s mounted low on the front timing cover, reading a toothed wheel on the crankshaft behind the harmonic balancer. Access is typically from underneath or through the right‑hand wheel arch. It’s held by a single small bolt and sealed with an O‑ring.
• Does a new crank angle sensor need programming?
  No. The Terios ECU self‑adapts. After installation, clear any codes and perform a simple idle relearn by letting the engine warm up and idle with accessories off.
• Can a faulty crank angle sensor be cleaned instead of replaced?
  Sometimes. If the magnetic tip has fine metal filings or grime and the wiring checks out, a careful clean can restore the signal. If faults return, internal degradation or heat soak usually means replacement is the reliable fix.