Idle-Up Operation Check

1. Before inspection and adjustment, set vehicle in the following condition:
- Engine coolant temperature: 80 - 90 °C (176.0 - 194.0 °F)
- Lights, electric cooling fan and accessories: Set to OFF
- Transmission: Neutral ("N" or "P" for vehicles with A/T)
- Steering wheel: Straightforward

2. Check whether or not the idle speed is the standard value. Refer to On-vehicle Service - Basic Idle Speed Adjustment.

Standard value: .......................700 + 50 r/min

3. When the A/C is running after turning the A/C switch to ON, and the blower switch to the 3(MH) or 4(HI) position, check to be sure that the idle speed is at the standard value.

Standard value
At low pressure: ...................700 ± 50 r/min
At high pressure: ....................840 ± 50 r/min

NOTE: The powertrain control module determines whether the A/C load is low or high according to the output signal from the A/C-ECU.

NOTE: It is not necessary to make an adjustment, because the idling speed is automatically adjusted by the ISC system. If, however, a deviation from the standard value occurs for some reason, check the ISC system.

NOTE: Check 4 minutes after idling begins.