HLA Troubleshooting

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

Item

Occurrence

Possible cause

Action

After replacing oil, sound occurs when starting engine

Oil shortage in oil passage

Maintain the engine speed between 2, 000 to 3, 000 RPM for approx. 2 s and 10 min ⁽¹⁾, and verify that the sound disappears.
- If the sound disappears, the HLA is normal.
  - If the sound does not disappear, go to item 5.

Sound occurs at instant when engine is started on vehicle left for 1 day

Starter cranked for 3 s or more and sound occurs directly after engine is started

HLA oil shortage

Sound occurs directly after engine is started with newly replaced HLA

Sound occurs continuously for 10 min or more

Insufficient oil pressure

Inspect the oil pressure. (See OIL PRESSURE INSPECTION .)
- If less than the specification, inspect each part of the engine.

HLA malfunction

Inspect the HLA. (See HLA Inspection .)

Sound occurs during idling after high-speed driving

Incorrect engine oil level

Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION .)

Engine oil deterioration

Replace the engine oil. (See ENGINE OIL REPLACEMENT .)

⁽¹⁾	Period of time engine oil flows to the HLA, this value includes tolerance caused by the ambient temperature and the oil used.