Parts for your 1999 Daihatsu Terios-Camshaft sensor

1999 Daihatsu Terios camshaft sensor: is it fitted, and what to know

Based on factory documentation and parts catalogues, the 1999 Daihatsu Terios (J100 series, 1.3-litre HC-EJ SOHC) does not use a separate, bolt-on camshaft position sensor. Instead, the engine’s phase (cam) signal is generated inside the distributor via an internal pick-up (often referred to in manuals as the G/NE signals). That means there’s no standalone camshaft sensor on the cylinder head or timing cover for this model year/engine. Later or alternate-market Terios models with the K3-VE DOHC engine do use a dedicated camshaft position sensor, but that engine generally appears from around 2000 onward in most markets.

Technical references supporting this: the Daihatsu Terios J100/J102 Service Manual (Engine Electrical—EFI/Ignition) details the distributor-based cam/engine speed signalling and does not list a separate camshaft position sensor for HC-EJ. The Daihatsu Electronic Parts Catalogue (EPC) for 1999 J100 shows a distributor assembly and no camshaft position sensor item. Conversely, the Daihatsu/Toyota K3-VE Engine Repair Manual shows a distinct camshaft position sensor fitted to the DOHC head—relevant to later J102 variants.

• Daihatsu Terios J100/J102 Service Manual, Engine Electrical (EFI/Ignition) — distributor with G/NE signals, no standalone CMP on HC-EJ.
• Daihatsu Electronic Parts Catalogue (EPC), 1999 J100 — distributor assembly listed, no camshaft position sensor part listed for HC-EJ.
• Daihatsu/Toyota K3-VE Engine Repair Manual — illustrates a dedicated camshaft position sensor on DOHC applications used in later Terios variants.

Why isn’t a separate camshaft sensor used on the 1999 HC-EJ? It’s simply the way the ignition and injection system was engineered at the time: the distributor houses the pick-up that gives the ECU both engine speed and cam phase information. It keeps the system compact, reduces parts count, and was common across many late-’90s small Japanese engines.

If the Terios is showing tell-tales that feel like a “bad cam sensor”, owners should look to the distributor assembly and its wiring. Typical symptoms include hard starting, random misfires, rough idle, stalling at junctions, and intermittent loss of power, especially when hot. On OBD scan tools you might see a loss-of-sync or distributor/NE/G signal fault rather than a classic camshaft sensor code on the HC-EJ. On K3-VE engines, a P0340-style camshaft position code is possible.

Good maintenance here means keeping the distributor cap and rotor clean and crack-free, ensuring the internal pick-up isn’t oil-soaked from a leaking shaft seal, checking the connector for corrosion, and making sure the shaft has no excessive play. If the internal sensor fails, many workshops in AU/NZ simply replace the distributor with a quality reman or new unit. Always reset base timing to spec after distributor work, and verify with a scan tool that the ECU sees a clean sync signal. A quick road test over a few kilometres seals the deal.

Does a 1999 Daihatsu Terios have a camshaft position sensor?

On the common 1999 HC-EJ SOHC version, there isn’t a separate camshaft position sensor. The cam signal comes from the distributor’s internal pick-up. If the vehicle happens to be a late ’99 with the K3-VE DOHC engine in a specific market, that engine does have a dedicated camshaft sensor on the head or timing cover area.

Where does the ECU get the cam signal on a 1999 Terios?

From the distributor assembly. The internal G/NE pick-ups provide both speed and phase information. If that pick-up or the wiring goes crook, the engine can be hard to start, misfire, or stall.

What should be checked if there are “cam sensor” type symptoms on a 1999 Terios?

Inspect the distributor cap and rotor, look for oil inside the distributor, check the internal pick-up, confirm good earths and clean connectors, and verify timing. Many issues are resolved by repairing or replacing the distributor and setting timing correctly.