Parts for your 2004 Daihatsu Yrv-Crank angle sensor

2004 Daihatsu YRV crank-angle sensor: what it does and how to look after it

Technical documentation confirms the 2004 Daihatsu YRV is fitted with a crank-angle sensor (commonly called a crankshaft position sensor). It’s part of the engine’s EFI system on both the K3-VE (1.3) and K3-VET (1.3 turbo) engines, providing the ECU with the NE signal for timing and engine speed.

Referenced technical sources:

• Daihatsu YRV Service Manual (M201G/M211G, 2000–2005), Engine Control (EFI) section – lists and diagrams the Crankshaft Position Sensor (NE) alongside the Camshaft Position Sensor (G).
• Daihatsu K3-VE/K3-VET Engine Repair Manual, SFI/Engine Control chapter – functional description and location of the crankshaft position sensor.
• Daihatsu Electronic Parts Catalogue (EPC) for M201G – Engine/Fuel group identifying the “Crankshaft Position Sensor (NE)” as a fitted component on K3-VE/K3-VET engines.
• DENSO Engine Control Systems technical training materials – NE/G sensor strategy used on Daihatsu/Toyota engines of this era.

On the 2004 YRV, the crank-angle sensor’s job is to tell the ECU exactly where the crank is and how fast it’s spinning. That info drives spark timing, injector sequencing, idle control and even helps with variable valve timing logic on the K3-VE family. If this sensor drops out, the YRV can crank but won’t fire, or it may stumble, misfire, or stall at lights. OBD-II codes commonly seen when it’s unhappy include P0335 and P0336.

Replacement isn’t a routine service item, but it’s smart to give it a once-over during major services—especially on higher-kilometre cars. It sits at the rear of the block near the bellhousing, so it cops heat, road grime and the odd oil mist. Owners and workshops should:

• Inspect the connector and loom for brittle insulation or green crusties, clean with proper electrical contact cleaner.
• Check for oil leaks wicking down the harness, fix sources at the rocker cover or rear main before they contaminate the sensor.
• Scan live data to confirm a steady RPM signal during crank, no signal usually points to the sensor, wiring, or a poor ground.
• If replacing, use a quality OEM-equivalent sensor, fit a new O-ring, lightly oil it, and route the harness in the factory clips away from the exhaust. The sensor is non-adjustable—no shims or gapping required.
• After installation, clear codes and perform a warm idle check. No special relearn is typically needed on this model.

For DIYers under the bonnet, allow the engine to cool, pop the splash guard off, and have a good torch handy. If the YRV shows intermittent no-starts when hot, random stalls, or an erratic tacho, it’s worth testing the crank sensor and wiring before throwing coils or injectors at it. A quick check with a scan tool and, if available, an oscilloscope can save a lot of guesswork—and a few bucks.

Popular questions

Where is the crank-angle sensor on a 2004 Daihatsu YRV?
On K3-VE and K3-VET engines it’s mounted at the rear of the engine block by the gearbox bellhousing, reading a reluctor on the crank. Access is usually from underneath—remove the front splash guard and look where the block meets the transmission.

What are the symptoms of a failing crank-angle sensor on a YRV?
Hard starting, random stalling at idle, misfires under load, a dead or jumpy tacho, and the engine cranking without firing are common. The check engine light may log P0335/P0336. Heat-soak faults are typical—runs fine cold, plays up hot.

Should the crank-angle sensor be replaced as preventive maintenance?
It’s not a scheduled replacement item. However, on high-kilometre cars it’s sensible to inspect it at major services. Replace if there’s physical damage, oil contamination, corroded pins, or if tests show a poor signal. Always verify wiring integrity before condemning the sensor.