Parts for your 2010 Isuzu D-max-Crank angle sensor

2010 Isuzu D‑MAX crank angle sensor: purpose, service and replacement

It’s relevant and it’s fitted. Technical references including the Isuzu D‑MAX 2008–2012 Workshop Manual (Engine Control System for 4JJ1/4JK1), the Isuzu 4JJ1 Engine Diagnostic Manual, and Bosch common‑rail diesel control literature all describe a crankshaft position (crank angle) sensor used by the ECU to read engine speed and top‑dead‑centre on the 2010 D‑MAX. On the 3.0‑litre 4JJ1 and 2.5‑litre 4JK1 engines, the sensor reads a toothed wheel at the rear of the crank/flywheel area to synchronise injection timing.

On this ute, the crank angle sensor is the ECU’s eyes on the crank. It tracks every degree of rotation so the ECU can time injection events precisely, keep idle smooth, and manage cold starts and emissions. If it goes out to lunch, expect hard starting, a no‑start, misfires at low revs, or the odd stall. The check engine light often tags along with codes like P0335 or P0336.

It’s not a scheduled service item, so owners don’t replace it by the kilometres, they deal with it when symptoms show. Smart servicing does include a quick look: check the sensor connector for oil ingress or corrosion, make sure the harness isn’t rubbing on the bellhousing or starter, and keep any sump or rear main oil leaks sorted so they don’t soak the plug. A clean, snug connector and undamaged loom go a long way.

Replacement is a straightforward driveway job for many: disconnect the battery, raise and support the front safely, then access the sensor on the rear/right side of the block near the bellhousing (location may vary slightly by engine). Unplug, remove the retaining bolt, ease the sensor out, lightly oil the new O‑ring, fit, and torque the bolt to spec per the workshop manual. Clear fault codes and crank, the ECU will re‑sync on its own. No special relearn is usually required on these models, but a scan tool check for CKP/CMP synchronisation is a tidy final step.

Use an OEM‑quality sensor, cheapies can introduce intermittent heat‑soak faults. If a new sensor doesn’t fix it, inspect the wiring back to the ECU and consider the reluctor (flywheel teeth) condition. With quality parts and a careful fit‑up, most D‑MAX owners are back on the road in under an hour.

• Common symptoms: long crank/no‑start, random stalling, rough idle, poor economy, CEL with P0335/P0336
• Good practice: keep connectors clean and dry, secure the loom, fix oil leaks early

FAQs

Where is the crank angle sensor on a 2010 D‑MAX?
On most 4JJ1 (3.0L) and 4JK1 (2.5L) engines it’s mounted low on the rear/right side of the engine block, reading the flywheel/ring gear through the bellhousing area. Access is typically from underneath with the ute safely supported.

Does the sensor need routine replacement?
No. It’s replaced on condition. During servicing, a quick visual of the connector and loom is plenty. If codes like P0335 appear or starting gets patchy, test it and replace with an OEM‑quality unit if confirmed faulty.

After replacement, is an ECU relearn required?
For these models the ECU generally synchronises automatically on the first crank. Clear any stored codes and verify with a scan tool if available. Some workshops also perform an idle learn if the battery has been disconnected, but it’s not usually mandatory just for a crank sensor swap.