Load compensation inspection

1. Start the engine and idle it.
2. Connect the M-MDS to the DLC-2.
3. Verify that P0506:00 or P0507:00 is not displayed.
   • If P0506:00 or P0507:00 are displayed, perform DTC inspection. (See DTC P0506:00 .) (See DTC P0507:00 .)
4. Access the RPM PID.
   NOTE:

   • Excludes temporary idle speed drop just after the loads are turned on.
5. Verify that the engine speed is within the specification under each load condition.
   • If load condition is not as specified, inspect the following:
     • A/C switch and related wiring harness (See CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER] .) (See CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER] .)
     • Fan switch and related wiring harness (See FAN SWITCH INSPECTION [MANUAL AIR CONDITIONER] .)

Idle speed (ATX: P, N position, MTX: Neutral position) 

600-700 RPM (MTX), 650-750 (ATX) 

Idle-up speed (ATX: P, N position, MTX: Neutral position) 

A/C on and refrigerant pressure sensor (middle pressure) is off: 700-800 RPM (MTX), 650-750 (ATX) 

A/C on and refrigerant pressure sensor (middle pressure) is on: 700-800 RPM (MTX), 670-770 (ATX) 

Electrical loads on: 650-800 RPM