Relearn the Idle (Idle Air Volume Learning)

Last updated: June 10, 2026

If your Nissan Juke (F16, 2019–present) idles unevenly, surges, or hangs high after a 12-volt battery disconnect or a throttle-body clean, the turbocharged HR10DDT (1.0 DIG-T) petrol engine has lost its learned idle-air setting. The F16 uses an electronic throttle with no idle adjustment screw — the ECM teaches itself the idle-air volume, and that value is erased whenever power is cut to the throttle actuator or the engine computer. The cure is Nissan’s Idle Air Volume Learning relearn, and on the petrol Juke it is an owner pedal sequence that needs no diagnostic tool.

When you need the idle relearn

• The 12-volt battery was disconnected or fully discharged (see our Juke F16 battery disconnect/reconnect guide).
• The throttle body was cleaned, removed, or unplugged.
• The ECM was replaced or its connector disturbed.
• Idle is hunting or sitting high, or you have a stored P0507 high-idle code.

This applies only to the petrol DIG-T Juke. It is non-destructive — a missed step just means the relearn doesn’t complete, and you start over with nothing harmed.

Pre-conditions — all must be true

• Engine fully warmed to operating temperature (70–100 °C) — drive 10–15 minutes first.
• Battery above 12.9 V at idle. The F16’s battery-management system means a weak battery will block the relearn; the auto Stop/Start also needs a healthy battery.
• Selector in P or N (the F16 is CVT or dual-clutch automatic), handbrake on.
• All loads OFF: A/C, lights, heated screen, blower, radio.
• Front wheels straight ahead.
• A stopwatch ready — five pedal presses inside five seconds is the critical window.

The full Idle Air Volume Learning relearn

1. Stage 1 — Accelerator Pedal Released Position Learning. Pedal fully released, ignition ON (engine not running), wait at least 2 seconds, ignition OFF, wait at least 10 seconds. Repeat the ON/OFF cycle once more.
2. Stage 2 — Throttle Valve Closed Position Learning. Pedal released, ignition ON, then OFF, wait at least 10 seconds. You should hear the throttle motor cycling during those 10 seconds — that confirms it took.
3. Stage 3 — Idle Air Volume Learning (the pedal dance). Start the warm engine and idle it, then turn ignition OFF and wait at least 10 seconds. Confirm the pedal is fully released, turn ignition ON and wait exactly 3 seconds. Fully press and fully release the accelerator 5 times within 5 seconds — floor it and lift completely each time, on the stopwatch. Wait about 7 seconds, then hold the pedal flat to the floor. After roughly 20 seconds the blinking engine warning light stops blinking and glows steady. Release the pedal within 3 seconds of it going steady.
4. Start the engine and let it idle. Blip the throttle two or three times and confirm idle settles smoothly to about 700 rpm.

If the idle is still rough

• The warning light never blinked in Stage 3 — a timing window was missed. Switch off and restart from Stage 1.
• Weak battery — charge fully above 12.9 V and retry. On the F16 this is the most common failure.
• Slight drift for the first minutes, then settles — normal; drive a short mixed cycle.
• Persistent surging on this turbo engine — check the charge-air and PCV hoses for a leak disturbed during the work, and confirm the throttle plate is clean.

Frequently Asked Questions

Does the Juke F16 need a scan tool for the idle relearn?

No. The pedal-sequence Idle Air Volume Learning is the official owner method for the petrol HR10DDT Juke and needs no CONSULT or aftermarket tool.

Why does my F16 Juke idle high after a battery change?

Disconnecting the battery wipes the ECM’s learned idle-air volume. Until it relearns, the throttle defaults to a higher opening, so the engine hangs at 1,200 rpm or more and may hunt. The relearn restores the proper value.

Does Stop/Start need to be relearned too?

Stop/Start re-arms on its own once the battery-management system has re-sampled state of charge through driving — allow 30 minutes of mixed driving and an overnight rest. The idle relearn above is separate and fixes the idle quality itself.

The relearn finished but idle still wanders slightly. Normal?

A brief wander for the first few minutes is normal while fuel trims re-adapt. A 10-minute drive clears it. Lasting surge points to a boost/vacuum leak or a dirty throttle.

Can I damage the turbo engine by getting the pedal timing wrong?

No. A mistimed sequence simply fails to complete — the light won’t go steady — and you start over. The relearn writes only the idle-air value.

If a throttle or idle code such as P0507 or a throttle-position fault stays stored after the relearn, find out what it means and which part it points to at autodtcs.com.