Parts for your 2002 Suzuki Jimny-Camshaft sensor

2002 Suzuki Jimny Camshaft Sensor — what it does and when to replace it

Based on factory references — Suzuki Jimny Workshop Manual for JB33/JB43 (Engine Control System sections for G13BB and M13A, including DTC P0340/P0341 diagnostics and component location diagrams) and Suzuki Electronic Parts Catalogue listings for 1998–2005 Jimny — the 2002 Suzuki Jimny is fitted with a camshaft position sensor (CMP). The manual details CMP signal checks and fault codes, and the EPC lists the CMP as a serviceable part for both the G13BB and M13A engines used in this model year.

On a 2002 Jimny, the camshaft sensor tells the ECU exactly where the cam is in its rotation so the engine can fire the injectors in the right order and time the spark cleanly. It works with the crank sensor to keep everything in sync, helping cold starts, smooth idle and decent fuel economy. On M13A variants, the CMP signal also assists variable valve timing control where fitted.

It’s not a “service item” like oil or filters, but a tired CMP can cause grief. Typical give‑aways include:

• Hard starting, especially hot restarts
• Rough idle, flat spots, misfires or stalling at lights
• Check Engine Light with codes such as P0340 or P0341
• Higher fuel use and a general lack of go

Location-wise: on G13BB engines the sensor is usually mounted at the rear of the cylinder head, on M13A it’s commonly at the front of the head near the cam sprocket. Either way, access is straightforward with basic hand tools. Replacement is simple: disconnect the battery, unplug the connector, remove the retaining bolt, ease the old sensor out, lightly oil the new O‑ring and seat it squarely, then refit the bolt (small M6 bolts typically torque to about 8–10 N·m), reconnect and clear codes. If the ECU supports it, perform an idle relearn.

There’s no real “maintenance” for the sensor itself, but two things really help it live a long life:

• Keep the rocker cover area dry — oil leaks can wick into connectors
• Inspect the loom over the timing cover for chafe or heat damage during major services (say each 100,000 km)

When replacing, go for a known OEM-quality part and don’t forget the O‑ring. If a Jimny is lifted or sees a lot of corrugated roads, it’s smart to add a quick connector check at regular services — vibration can loosen tired terminals and mimic a failing sensor.

Popular questions about 2002 Suzuki Jimny camshaft sensors

Where is the camshaft sensor on a 2002 Jimny?
On G13BB engines it’s typically at the back of the cylinder head, near the firewall. On M13A engines it’s usually up front on the head by the cam sprocket. If unsure, check the engine code on the VIN plate and match it to the workshop manual’s component location diagram.

Can a camshaft sensor be cleaned, or does it need replacing?
The sensing face isn’t really serviceable. What can help is cleaning the connector and checking the wiring for damage. If the sensor itself is failing electrically and logging P0340/P0341, replacement is the proper fix.

Is it safe to drive with a failing camshaft sensor?
Often the Jimny will still run, but starting can be hit‑and‑miss and fuel economy may suffer. Prolonged driving with intermittent sync can stress the catalytic converter. Best to diagnose and sort it promptly.