Load compensation inspection

WARNING: This page is about a different car, the 2018 Mazda CX-9. However, it is still accessible from the selected car via links, so may be relevant.

Start the engine and let it idle.
Connect the M-MDS to the DLC-2.
Select the RPM PID.
NOTE:
- Excludes temporary idle speed drop just after the loads are turned on.
Verify that the engine speed is within specification under each load condition.
- If the load condition is not as specified, inspect the following:
  - A/C switch and related wiring harness system (A/C request signal is always on or off) (See NO. 23 A/C Does Not Work Sufficiently .) (See NO. 24 A/C Is Always On Or A/C Compressor Runs Continuously .)
  - Electrical load
  - Charging system (See BATTERY INSPECTION .) (See GENERATOR INSPECTION .)
Idle-up speed (P position or N position)

A/C on: 650-800 RPM

Electrical loads on: 650-800 RPM