Parts for your 1985 Suzuki Jimny-Crank angle sensor

1985 Suzuki Jimny crank angle sensor — is it fitted, and what to know

Short answer: a crank angle sensor isn’t used on the 1985 Suzuki Jimny. The 1985 AU/NZ-market Jimny (SJ410/SJ413) runs a carburetted G10 or G13A engine with a distributor-based, breakerless ignition. Technical sources including the Suzuki SJ410/SJ413 Service Manual (1984–1989, Ignition System section), the Haynes Suzuki SJ/Samurai 1981–1997 manual, and Suzuki parts catalogues show a distributor with a magnetic pickup (often called the “pickup coil” or “ignition signal generator”) and an ignitor module, but no separate crankshaft position/crank angle sensor.

Why no crank angle sensor? These Jimnys pre-date widespread EFI and distributorless ignition. Engine position and timing are handled inside the distributor: a reluctor wheel passes a magnetic pickup to generate the trigger signal, while mechanical (centrifugal) and vacuum advance handle timing changes. Because there’s no ECU monitoring a dedicated crank sensor, the separate crank-angle/CKP hardware simply isn’t required on this generation.

What to look at instead if you’re chasing a no-start or misfire labelled as a “crank sensor” fault on an ’85 Jimny? Focus on the distributor and its ancillaries. The same sources list service procedures for:

• Pickup coil (ignition signal generator) condition and resistance, and the air gap to the reluctor
• Ignitor module and coil connections, grounds, and wiring continuity
• Vacuum advance diaphragm integrity and hose routing
• Centrifugal advance weights/springs moving freely under the rotor
• Distributor shaft bush wear and cap/rotor condition

It’s also common for aftermarket listings to call the distributor pickup a “crank angle sensor”. Different name, same job on this model. If you’re replacing parts, match them to the distributor type and engine (SJ410 vs SJ413) and follow the factory spec for air gap and timing. If you really need a crankshaft sensor, you’re looking at later EFI Jimny generations that adopted a dedicated CKP at the timing case or flywheel.

Bottom line for a 1985 Jimny: there’s no separate crank angle sensor fitted. Keep the distributor assembly healthy and the ignition timing set to spec, and it’ll run sweet as.

Popular questions

Does a 1985 Suzuki Jimny have a crank angle sensor?
No. Technical manuals for the SJ410/SJ413 show a distributor with a magnetic pickup and ignitor, not a separate crankshaft position/crank angle sensor. Timing and engine position are managed inside the distributor.

What should be checked instead of a crank angle sensor on an ’85 Jimny?
Inspect the distributor pickup coil, ignitor module, coil and earths, the reluctor air gap, and the mechanical and vacuum advance. Cap, rotor, and wiring condition are also common culprits for misfires and no-starts.

Why did later Jimnys get a crankshaft sensor when the 1985 model didn’t?
Later EFI engines use an ECU that needs precise crank (and often cam) position data for injection and spark control. The 1985 carburetted setup relies on the distributor’s internal trigger and mechanical/vacuum advance, so a separate sensor wasn’t necessary.