Load compensation inspection
- Start the engine and idle it.
- Connect the M-MDS to the DLC-2.
- Verify that P0506 or P0507 is not displayed.
- If P0506 or P0507 are displayed, perform DTC inspection. (See DTC TABLE .)
- Access the RPM PID.NOTE:
- Excludes temporary idle speed drop just after the loads are turned on.
- 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 CLIMATE CONTROL UNIT INSPECTION [FULL-AUTO AIR CONDITIONER] .)
(See CLIMATE CONTROL UNIT INSPECTION [MANUAL AIR CONDITIONER] .)
- A/C switch and related wiring harness
- If load condition is not as specified, inspect the following:
Engine speed: MTX
LOAD STATUS (MTX)
| Load status | Idle speed (rpm) | |
|---|---|---|
| Neutral | ||
| No load | 600-700 | |
| A/C on | Refrigerant pressure switch (middle pressure) is off | 700-800 |
| Refrigerant pressure switch (middle pressure) is on | ||
| Electrical loads on | Generator generating current value | 650-800 |
Engine speed: ATX
LOAD STATUS (ATX)
| Load status | Idle speed (rpm) | ||
|---|---|---|---|
| N range | D range | ||
| No load | 650-750 | 550-650 | |
| A/C on | Refrigerant pressure switch (middle pressure) is off | 650-750 | |
| Refrigerant pressure switch (middle pressure) is on | 670-770 | ||
| Electrical loads on | Generator generating current value | 600-800 | |