Idle Speed: Testing and Inspection
INSPECT ENGINE IDLE SPEEDa. Warm up and stop the engine.
NOTICE: A warmed up engine should have an engine coolant temperature of over 80°C (176°F), and an engine oil temperature of 60°C (140°F), and the engine rpm should be stabilized.
b. When using the intelligent tester:
1. Connect the intelligent tester to the DLC3.
NOTICE: Switch off all accessories and A/C before connecting the intelligent tester.
2. Race the engine speed at 2,500 rpm for approximately 90 seconds.
3. Push the intelligent tester main switch ON.
4. Enter these items: powertrain/Engine and ECT/Data list/Engine SPD.
Idle speed: 650 to 750 rpm
NOTICE: When checking the idle speed, the transmission should be in the neutral.
HINT: Refer to the intelligent tester operator's manual for further details. If the idle speed is not as specified, check the air intake system.
5. Disconnect the intelligent tester from the DLC3.
c. When not using the intelligent tester:
1. Using SST, connect the tachometer probe to terminal TAC of the DLC3.
SST 09843-18040
NOTICE: Confirm the terminal numbers before connecting them. Connecting the wrong terminals can damage the engine.
2. Race the engine speed at 2,500 rpm for approximately 90 seconds.
3. Check the idle speed.
Idle speed (Transmission neutral position): 650 to 750 rpm
If the speed is not as specified, check the air intake system.
4. Disconnect the tachometer from the DLC3.