Load compensation inspection

1. Start the engine and let it idle.
2. Connect the M-MDS to the DLC-2.
3. 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 (VINs 7, L, M)] .) (See DTC P0507:00 [PCM (VINs 7, L, M)] .)
4. Select the PCM PID [ENG_RPM].
   NOTE:

   • Excludes temporary idle speed drop just after the loads are turned on.
5. 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 M)] .) (See GENERATOR INSPECTION [(VIN 7 & VIN L)] .)

Idle-up speed [VIN 7] (MTX: Neutral position, ATX: P, N position) 

No load: 500-600 rpm (MTX), 550-650 rpm (ATX)

A/C on: 650-800 rpm

Electrical loads on: 600-750 rpm

Idle-up speed [VIN L &, M] (MTX: Neutral position, ATX: P, N position) 

No load: 560-660 rpm (MTX), 550-650 rpm (ATX)

A/C on: 650-800 rpm

Electrical loads on: 600-750 rpm