Parts for your 2007 Mitsubishi Lancer-Throttle position sensors

2007 Mitsubishi Lancer Throttle Position Sensor (TPS) — What it does and how to look after it

The 2007 Mitsubishi Lancer does use a throttle position sensor. Mitsubishi workshop manuals for the late CS/CT and early CJ Lancer platforms list TPS-related diagnostics (DTCs P0120–P0124, P2135) and test procedures, and Mitsubishi’s ASA parts catalogue shows a replaceable TPS for cable-throttle engines (e.g., MD628074 on 4G-series) and an integrated dual-sensor in the electronic throttle body on 4B11-equipped models. These technical sources confirm the TPS is relevant and fitted on 2007 Lancer variants.

On this Lancer, the TPS tells the engine control unit exactly how far the throttle plate is open. That live angle data lets the ECU sort fuelling, ignition timing, transmission shift strategy, and idle control, keeping the car smooth in city traffic and punchy on the open road. Cable-throttle cars use a standalone, adjustable TPS on the throttle shaft. Drive-by-wire cars use a throttle body with twin position sensors for redundancy, matched to an electronic motor and a separate accelerator pedal sensor.

When a TPS starts to go crook, common signs include:

• Flat spots, hesitation, or a hunting idle
• Sudden loss of power or limp-home behaviour
• Poor fuel economy and an illuminated check engine light
• Harsh or late shifts on autos

As part of routine servicing, it’s smart to inspect the TPS connector and loom for corrosion or chafing, and keep the throttle body clean. On cable-throttle Lancers, the TPS can be tested and adjusted so closed-throttle voltage is in spec (typically around 0.45–0.6 V) using a scan tool or multimeter. On drive-by-wire models, the TPS is not adjustable, if readings are out of range or inconsistent between Sensor A/B, the throttle body assembly is replaced as a unit.

Replacement isn’t a scheduled item—do it when faults are confirmed. Practical tips Aussie and Kiwi techs follow include disconnecting the battery before unplugging the sensor, avoiding any force on the throttle shaft, replacing gaskets when removing the throttle body, and torquing small screws gently to avoid cracking the housing. After replacement, perform a throttle/idle relearn. On cable-throttle cars that’s usually a base idle and TPS reset via scan data, on drive-by-wire, use a scan tool routine or the manufacturer’s specified learn procedure. Clear codes, take it for a proper road test, and check freeze-frame data if the light returns. Done right, the Lancer’s throttle response stays crisp and reliable for many more kilometres.

Q: Where is the throttle position sensor on a 2007 Mitsubishi Lancer?

On cable-throttle engines (common on late CS/CT cars), the TPS sits on the side of the throttle body, keyed to the throttle shaft. On drive-by-wire 4B11 models (early CJ era), the TPS is integrated inside the electronic throttle body, it isn’t serviced separately.

Q: Does a TPS replacement need calibration or relearning on this Lancer?

Yes. Cable-throttle TPS units usually need their base voltage set in spec and the ECU allowed to relearn idle control. Drive-by-wire throttle bodies require a throttle/idle learn using a scan tool or the specified learn procedure so the ECU trusts the new sensor pair.

Q: Is it safe to keep driving with a dodgy TPS?

It might still run, but it’s not wise. A failing TPS can cause surging, stalling, or limp mode, which isn’t ideal in traffic or on a wet Kiwi backroad. Fixing the root cause early protects the catalytic converter and saves fuel.