Parts for your 1997 Mitsubishi Pajero-Throttle position sensors

1997 Mitsubishi Pajero throttle position sensor (TPS): what it is, and why it matters

Based on Mitsubishi’s Factory Service Manual for the V20-series Pajero/Montero (1991–1999) and the Mitsubishi ASA/CAPS parts catalogue, a throttle position sensor is fitted to 1997 Mitsubishi Pajero models. On the petrol engines (6G72 3.0L and 6G74 3.5L EFI), the TPS is mounted on the throttle body and feeds the engine control unit (ECU). On the 2.8L diesel (4M40) used in many markets, an accelerator/throttle position sensor is fitted on the injection pump’s control lever to inform the ECU for EGR, timing and, where fitted, automatic transmission control. Technical references: Mitsubishi Pajero/Montero Factory Service Manual (1997, Engine Electrical and Diesel Control sections) and Mitsubishi ASA/CAPS parts listings for TPS/APS assemblies.

For the ’97 Pajero, the TPS is a quiet achiever. It tells the ECU exactly how far the driver’s right foot has asked the throttle to open, so fueling, ignition timing (petrol), EGR and idle control land right on the money. That’s what keeps the big wagon smooth off idle, crisp through the mid-range and tidy on fuel. On autos, the signal also helps shift quality.

Over time, a TPS can wear its internal track or lose calibration. That shows up as a shaky idle, flat spots on take-off, hunting revs, kickdown quirks, or even a check engine light with TPS or throttle angle codes. If the Pajero’s feeling a bit doughy, it’s worth a look under the bonnet.

Service advice that makes sense in Aussie and Kiwi conditions:

• Inspection interval: give the TPS and connector a once-over every 20,000–30,000 km during routine servicing, particularly if the vehicle sees dust or river crossings.
• Cleaning: unplug and clean the connector with contact cleaner, check for green corrosion, loose pins or chafed wiring near the throttle body or injection pump.
• Testing: with a multimeter, confirm smooth resistance/voltage change through the full sweep—no dead spots or sudden jumps. Follow the factory pin-out and specs for your engine code.
• Adjustment: many Pajero TPS units are slotted. After installation, set base voltage/angle to spec with feeler gauge or scan data, then lock to the correct torque.
• Replacement: use quality parts, transfer the O-ring or gasket if required, and clear ECU codes. A quick road test to verify idle, tip-in and kickdown is worth the extra few minutes.

Looking after the TPS isn’t glamorous, but it pays back with better drivability, cleaner running and fewer surprises on trips.

Popular questions

Where is the TPS on a 1997 Mitsubishi Pajero?
On petrol models (6G72/6G74), it’s bolted to the throttle body on the intake manifold, opposite the throttle cable linkage. On many 2.8L 4M40 diesels, the accelerator/throttle position sensor sits on the injection pump’s control lever and reads pedal/throttle movement for the ECU.

What are common signs the TPS is failing on this model?
Tell-tales include erratic idle, hesitation on tip-in, flat spots under light throttle, hunting revs, harsh or delayed shifts on autos, and a check engine light with throttle angle/TPS codes. A scan tool may show an inconsistent throttle angle percentage or a voltage that doesn’t rise smoothly.

Can the TPS be adjusted or does it need programming?
Many Pajero TPS units are adjustable via slotted mounting holes. Set base voltage/angle to factory spec and tighten to the correct torque. No programming is usually required, just clear any stored codes and confirm operation with a short drive and live data check.