Parts for your 2007 Toyota Caldina-Camshaft sensor

2007 Toyota Caldina Camshaft Sensor — What It Does and When to Replace It

Based on Toyota’s own technical literature, the 2007 Toyota Caldina is fitted with a camshaft position sensor. The T24# series Caldina engines — 1ZZ-FE (1.8 VVT-i), 1AZ-FSE (2.0 D-4 VVT-i), and the ST246 3S-GTE in the GT-Four — all use a camshaft sensor (CMP) to provide “G” signals for sequential injection and VVT-i control. This is documented in Toyota Repair Manuals and New Car Features (NCF) for the 1ZZ-FE/1AZ-FSE, plus the ST246 Engine Control section and Toyota EWDs covering the Caldina’s ECM inputs.

On this model, the CMP sits on the cylinder head (typically on the intake cam for 1ZZ-FE and 1AZ-FSE), reading a trigger wheel to tell the ECU which stroke each cylinder is on. That lets the ECU fire injectors and coils precisely, trims idle nicely, and keeps VVT-i angles where they should be. If it drops out, the ECU can often limp on crank signals, but starts get longer, power softens, fuel economy suffers, and a MIL pops on with a code like P0340/P0341.

There’s no fixed replacement interval, it’s a “replace-on-fault” item. As part of regular servicing, it’s smart to:

• Scan for stored or pending cam/crank correlation codes after any timing-chain or VVT work.
• Inspect the sensor plug and harness for oil wicking or brittle insulation, especially around the head and rear of the cover.
• Address oil leaks promptly — hot oil on connectors can cause intermittent signals.

If replacement is needed, go for quality (OE or Denso). On the 1ZZ-FE/1AZ-FSE, access is straightforward: disconnect battery, unplug the connector, remove the single hold-down bolt, twist the old sensor free, light smear of clean engine oil on the new O-ring, seat it, and torque the bolt to the factory spec (around 9 N·m on typical M6 Toyota hold-downs — confirm in the exact engine manual). Clear codes and verify live data shows stable cam angle and sync. For the ST246 3S-GTE, packaging is tighter, so allow a bit more time and follow the engine EWD/EM steps.

Symptoms worth a closer look include hard starting when hot, surging idle, sudden drop in fuel economy, hesitation on take-off, and those cam sensor DTCs. A healthy CMP keeps the Caldina’s VVT-i crisp, the starts clean, and the fuel bill friendly — well worth keeping in top nick.

Popular questions

Where is the camshaft sensor on a 2007 Caldina?
On most 1ZZ-FE and 1AZ-FSE cars it’s on the cylinder head at the timing chain end, reading the intake cam. The GT-Four (3S-GTE) also uses a dedicated cam signal, but access differs due to turbo gear and intake layout. A quick peek under the engine cover near the cam gear end usually spots it.

If unsure which engine is fitted, check the build plate or the rocker cover stamping, then follow the relevant Toyota EM section for the exact location.

What are the signs the camshaft sensor is failing?
Common tells are longer cranking, rough idle, misfire-like stumble, worse fuel use, and the MIL with codes like P0340/P0341. Sometimes it’s just a dirty or oil-soaked connector causing intermittent sync loss.

Rule out wiring first — a simple connector clean and harness repair can save replacing a good sensor.

Is it okay to drive with a camshaft sensor fault?
The Caldina may still run using the crank sensor, but performance and fuel economy can take a hit, and it can stall at awkward times. Best practice is to fix it sooner rather than later, especially on VVT-i engines where accurate phasing matters.

Keep trips short until it’s diagnosed and repaired to avoid getting caught out.