Parts for your 2005 Mitsubishi Pajero-Throttle position sensors

2005 Mitsubishi Pajero throttle position sensor (TPS)

Based on technical references, a throttle position sensor is relevant and used on the 2005 Mitsubishi Pajero. The Mitsubishi Pajero/Montero 2003–2006 Factory Service Manual (Engine and MFI sections) specifies a TPS on petrol 6G75 models, mounted on the throttle body and used by the ECU to track throttle angle. The Mitsubishi ASA electronic parts catalogue for NP/NS Pajero also lists a dedicated throttle position sensor for petrol variants. For the 3.2‑litre 4M41 Di‑D diesel, the factory manual and Bosch EDC16 documentation describe an electronically controlled intake throttle/air control valve with a built‑in position sensor. While the diesel doesn’t meter engine load with a throttle plate like a petrol, its throttle valve and position sensor are used for EGR flow management and smooth shutdown, so a TPS‑type signal is still part of the system.

On a 2005 Pajero, the TPS reports the exact angle of the throttle plate to the ECU. On petrol V6 models this helps determine fuelling, ignition timing and transmission behaviour, and supports idle control and cruise. On diesel 4M41 models, the throttle valve position sensor lets the ECU position the valve for EGR efficiency and anti‑shudder on shutdown. When the TPS signal goes off, owners can see symptoms like erratic idle, flat spots, hesitation, harsh shifts, cruise dropping out, higher fuel use and an engine light with codes such as P0120–P0124.

As part of routine servicing, it’s smart to check live data for a smooth throttle angle sweep and inspect the connector under the bonnet for corrosion or a loose fit. If cleaning the throttle body, avoid soaking the sensor itself. On cable‑throttle petrol setups, TPS adjustment may be required after replacement—set per the workshop manual using a scan tool or multimeter, then perform the ECU idle/throttle learn. Drive‑by‑wire or diesel throttle bodies are typically replaced as an assembly, budget for a new gasket and carry out the relearn procedure afterwards.

• Typical replacement triggers: repeatable dead spots in the sweep, voltage out of range, stored TPS codes, or water ingress at the plug.
• Helpful tips: disconnect the battery before unplugging, use contact cleaner on the connector, clear codes and complete a short relearn drive cycle.
• If unsure, a technician can scope the signal to confirm a clean, linear output from closed to wide open throttle.

Popular questions about 2005 Mitsubishi Pajero throttle position sensors

Where is the TPS on a 2005 Pajero?
On petrol 6G75 models, it’s on the side of the throttle body at the intake plenum. On 4M41 diesel models, the position sensor is integrated with the throttle/air control valve assembly in the intake tract. Access is under the bonnet, removing the engine cover usually makes it easier to see.

Do I need to program or “relearn” after replacing the TPS?
Yes—most Pajeros benefit from an idle/throttle relearn. With a scan tool this is straightforward, without one, a battery reset followed by a prescribed idle and gentle drive cycle often works. Diesel throttle valve assemblies also require the ECU to relearn stop positions for smooth EGR control.

What are the signs my TPS is failing?
Owners often report hesitation on tip‑in, hunting idle, unexpected downshifts, cruise control dropping out and the MIL on. A scan will usually show TPS range/performance faults or a throttle signal that jumps rather than sweeping smoothly.