Parts for your 2000 Nissan Navara-Throttle position sensors

2000 Nissan Navara throttle position sensor (TPS)

Based on the Nissan D22 Factory Service Manual (1997–2001, EC and EGI sections) and the Nissan FAST parts catalogue for D22 configurations common to Australia and New Zealand, the 2000 Nissan Navara is fitted with a throttle position sensor or throttle/throttle-valve switch across its key engine options. The KA24DE petrol engine uses a TPS on the throttle body to report throttle angle to the ECU. Diesel variants of the era (such as QD32 and early YD25) employ a throttle sensor or switch to support EGR control, idle-up and smoke limitation. So yes—TPS is relevant and used on the 2000 Navara.

The TPS is a small but important piece of kit. It tells the engine computer exactly how much the driver is asking for, helping dial in fuelling, ignition timing and, on autos, shift behaviour. On diesels it also feeds the ECU for EGR and idle control. When it goes off, the ute can feel flat, surge at cruise, idle hunt, or throw fault codes like P0120–P0123.

As part of a regular service, it’s smart to give the TPS and throttle body some attention. Inspect the connector for green crusties, cracked insulation or loose terminals. With a scan tool or multimeter, confirm a steady 5 V reference, robust earth, and a smooth signal that rises evenly from closed to wide-open throttle. On adjustable units, set closed-throttle voltage around the typical 0.45–0.55 V (check the FSM spec for the exact figure for your engine) and lock the screws while holding the sensor steady. After replacement or adjustment, clear codes and perform the idle learn procedure as per the D22 manual.

• Clean the throttle bore and plate with throttle-body safe cleaner (not MAF cleaner on the TPS).
• Check harness routing so it doesn’t chafe on the manifold.
• If the sweep shows dead spots or jumps, replace the sensor—cleaning won’t fix worn tracks.
• Use quality OEM-equivalent (often Hitachi) parts to avoid flaky signals.

There’s no strict replacement interval—treat the TPS like a “inspect and test” item every 40–60,000 km or whenever drivability changes. A correctly set TPS makes a noticeable difference to cold starts, throttle response and fuel economy on a well-kept 2000 Navara.

Popular questions about 2000 Nissan Navara throttle position sensors

Where is the TPS located on a 2000 Navara?
On KA24DE petrol models it’s bolted to the side of the throttle body, opposite the throttle cable linkage. On diesel variants it may be on the throttle valve assembly or integrated as a throttle/accelerator position sensor near the pump or pedal, depending on the exact engine. A quick look at the throttle body or a glance in the D22 FSM will confirm the spot.

How can someone tell if the TPS is failing?
Common giveaways include a hesitant take-off, flat spots mid-throttle, an erratic or high idle, poor economy, or the check-engine light. A scan tool may show codes like P0120–P0123. Back-probing the signal wire should reveal a smooth voltage sweep, any spikes, dropouts or dead zones point to a worn sensor.

Can a TPS be cleaned, or does it need replacing?
The TPS is a sealed sensor, cleaning won’t repair internal wear. Clean the throttle body and connector, then retest. If the signal is still noisy or the idle switch doesn’t toggle correctly at closed throttle, replacing the TPS is the proper fix. After fitting, set the base position and complete the idle learn.