Parts for your 2001 Daihatsu Gran move-Knock sensor

2001 Daihatsu Gran Move knock sensor — is it fitted?

Short answer: the 2001 Daihatsu Gran Move (also sold as the Pyzar, G3 series) is not equipped with a knock sensor from factory when fitted with the HE‑EG 1.5-litre EFI engine. That’s not a guess — it lines up with Daihatsu technical documentation and parts listings for this model and engine family.

Technical references that support this:

• Daihatsu Gran Move/Pyzar G3 Workshop Manual (1998–2002), Engine Control (EFI) section — the sensor list and ECU pinout show coolant temp, intake air temp, MAP, throttle position, O2 sensor, and a distributor-mounted crank angle signal, but no knock sensor circuit.
• Daihatsu Electronic Parts Catalogue (EPC) for G303/G311 with HE‑EG engine — there’s no knock sensor part number, no block-mounted sensor boss, and no harness lead or connector for a KS on these variants.
• Factory wiring diagrams for the same models — no dedicated KS wiring, and the ignition control strategy is mapped timing via the ECU using load and rpm, referenced to the distributor signal.

Why it’s not used on this vehicle? The HE‑EG is a relatively low‑to‑mid compression SOHC 16‑valve engine running conservative ignition timing and a MAP‑based fuel/ignition map. For its era and emissions targets, Daihatsu managed spark control without knock feedback to keep costs and complexity down. Many aftermarket listings that claim a Gran Move “knock sensor” are actually for different Daihatsu/Toyota engines (like K3‑VE or some Toyota E‑series) that do use one. On a 2001 Gran Move HE‑EG, there’s no mounting point on the block and no plug in the loom, so there’s nothing to replace or maintain.

If the engine pings under load, the fix isn’t a knock sensor swap — the car doesn’t have one. Look instead at essentials: correct base ignition timing at the distributor, good quality petrol, clean throttle body and MAP vacuum line, no intake leaks, healthy coolant temperature sensor, proper spark plugs and leads, and carbon build‑up in the chambers. A timing light and a quick vacuum/air leak check under the bonnet will get most owners pointed the right way.

FAQs

Does my 2001 Daihatsu Gran Move have a knock sensor?
No. The HE‑EG 1.5 EFI used in the 2001 Gran Move doesn’t have a knock sensor, and the ECU/harness don’t support one. Ignition timing is managed via mapped control using the distributor’s crank angle signal and the MAP sensor.

Can I retrofit a knock sensor to reduce pinging?
It’s not practical. There’s no threaded boss in the block, no ECU input pin, and no wiring. If it’s rattling under load, address base timing, fuel quality, carbon build‑up, vacuum leaks, and sensor health (MAP, coolant temp) — those are the usual culprits on this engine.

Where would a knock sensor be located if it had one?
On engines that use them, they’re typically screwed into the block near the middle cylinders. The Gran Move’s HE‑EG block lacks that provision, so you won’t find a spare plug or loose connector there.