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EFI Main Relay <--> [Main Relay (Computer/Fuel System)] > < Diagnostic Trouble Code Tests and Associated Procedures|Page 3125

Celica GT Liftback L4-2164cc 2.2L DOHC (5S-FE) MFI (1999)

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Idle Up Control Valve: Testing and Inspection

INSPECTION

1. TURN AIR CONDITIONING SWITCH OFF
2. CHECK IDLE-UP

a. Start the engine and run it at idle.
b. Fully turn the steering wheel.
c. Check that the engine rpm decreases when the vacuum hose of the air control valve is pinched.
d. Check that the engine rpm increases when the hose is released.

EFI Main Relay <--> [Main Relay (Computer/Fuel System)] > < Diagnostic Trouble Code Tests and Associated Procedures|Page 3125