On-Vehicle Inspection

ON-VEHICLE INSPECTION
1. INSPECT IAC VALVE OPERATION
- Initial conditions:
- Engine at normal operating temperature
- Idle speed set correctly
- Transmission in neutral position





- Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
- After engine rpm is kept at 900 - 1,300 rpm for 5 seconds, check that it returns to idle speed.
- If the rpm operation is not as specified, check the IAC valve, wiring and ECM.
- Remove the SST form the DLC1. SST 09843-18020
2. INSPECT IAC VALVE RESISTANCE

NOTICE: Cold and Hot in these sentences express the temperature of the coils themselves.
"Cold" is from - 10°C (14°F) to 50°C (122°F) and
"Hot" is from 50°C (122°F) to 100°C (212°F).

- Disconnect the IAC valve connector.





- Using an ohmmeter, measure the resistance between terminal +B and other terminals (ISCC, ISCO).

Resistance:
Cold: 17.0 - 24.5 Ohms
Hot: 21.5 - 28.5 Ohms

- If resistance is not as specified, replace the IAC valve.
- Reconnect the IAC valve connector.