Load compensation inspection

Start the engine and let it idle.
Connect the M-MDS to the DLC-2.
Verify that DTC P0506:00 or P0507:00 is not displayed. (See DTC INSPECTION .)
- If DTC P0506:00 or P0507:00 is displayed, perform the DTC inspection. (See DTC P0506:00 [PCM (VIN Y)] .) (See DTC P0507:00 [PCM (VIN Y)] .)
- Select the ENG_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 A/C DOES NOT WORK SUFFICIENTLY .) (See A/C IS ALWAYS ON OR A/C COMPRESSOR RUNS CONTINUOUSLY .)
  - Electrical load
  - Charging system (See BATTERY INSPECTION (US) .) (See GENERATOR INSPECTION [VIN Y (US)] .)
    Idle-up speed (P, N position)
    
    No load: 650-750 rpm
    
    A/C on: 650-850 rpm
    
    Electrical loads on: 650-850 rpm