Mirage Sedan LS L4-1834cc 1.8L SOHC MFI (1999)
Idle Speed/Throttle Actuator - Electronic: Component Tests and General Diagnostics
Oscilloscope Testing
IDLE AIR CONTROL (STEPPER) MOTOR
Measurement Method
1. Disconnect the IAC motor connector, and connect the special tool (test harness: MD998463) in between.
2. Connect the analyzer special patterns pickup to the IAC motor-side connector terminal 1 (red clip of special tool), terminal 3 (blue clip), terminal 4
(black clip) and terminal 6 (yellow clip) respectively.
Alternate Method Test harness not available)
1. Connect the analyzer special patterns pickup to ECM terminal 4, connection terminal 5, connection terminal 17, and connection terminal 18
respectively.
Standard Wave Pattern
Observation conditions
Standard wave pattern
Wave Pattern Observation Points
Check that the standard wave pattern appears when the IAC motor is operating.
