Parts for your 2006 Toyota Blade-Tx valve

2006 Toyota Blade TX-Valve: What It Does and When to Service It

Based on Toyota service literature for the E150 platform and the Toyota Electronic Parts Catalogue (covering Blade model codes such as AZE156 and GRE156), the 2006 Toyota Blade is built with a thermal expansion valve (TX-valve/TXV) in its air-conditioning system. DENSO air-conditioning training materials for Toyota passenger cars also describe this layout: a variable-displacement compressor working with an evaporator-mounted TXV rather than an orifice tube. So yes, the TX-valve is relevant and fitted on the 2006 Toyota Blade.

The TX-valve meters refrigerant into the evaporator, reacting to evaporator outlet temperature and pressure to keep superheat in the sweet spot. That balance helps deliver cold air at the vents while preventing the evaporator from icing up. On the Blade, the TXV is mounted at the evaporator inlet inside the HVAC box behind the glovebox, with short hard lines and O-rings sealing it to the core. When it’s doing its job, vent temps are crisp even on a stinking-hot arvo, and compressor workload stays efficient.

Owners and workshops usually address the TX-valve when the air-con shows tell-tale behaviour. Common signs include:

• Warm or inconsistent vent temperatures, worse at idle or in traffic
• Audible hissing at the dash area, or line frosting near the firewall
• High or unbalanced pressures on the gauges, or slow pull-down after start

Replacement is straightforward for a pro but fiddly for DIY because the glovebox area and lines must be carefully removed. Best-practice on the Blade includes:

• Recover the R134a properly, don’t vent. Replace O-rings with the correct sizes and use the right PAG oil.
• If the system’s been open or contaminated, renew the receiver–drier element (often integrated with the condenser on this era of Toyota) and evacuate for a solid 30–45 minutes.
• Flush lines if there’s evidence of compressor debris, a sticky or blocked TXV can be a symptom, not the root cause.
• Check the cabin filter and ensure the evaporator core is clean—airflow matters as much as refrigerant flow.
• Charge by weight to the spec on the under-bonnet label, “cold by feel” is a mug’s game.

With correct diagnosis (always check for low charge and leaks first), a fresh TXV can bring the Blade’s air-con back to frosty, reliable performance for many kilometres. It’s a small part that does a big job, and on these Toyotas it pairs perfectly with the DENSO compressor design.

Does a 2006 Toyota Blade have a TX-valve or an orifice tube?

It uses a thermal expansion valve. Toyota’s E150-platform A/C design for the Blade specifies a TXV at the evaporator inlet, matched to a variable-displacement compressor for stable superheat control and efficient cooling.

Where is the TX-valve located on a 2006 Toyota Blade?

It’s mounted on the evaporator inside the HVAC unit behind the glovebox area. Access typically involves removing the glovebox, disconnecting the A/C lines at the firewall, and carefully separating the valve from the evaporator with new O-rings fitted on reassembly.

When should the TX-valve be replaced on a Blade?

Replace it if there’s confirmed TXV sticking or blockage, persistent poor cooling with correct charge, or metal debris after compressor failure. Whenever the system is opened for major work, consider a new TXV and drier to protect the fresh repair and keep pressures in check.