RL V6-3474cc 3.5L (1998)
Variable Induction Control Solenoid: Description and Operation
Intake Air Bypass (IAB) Low Control Solenoid Valve, Intake Air Bypass (IAB) High Control Solenoid Valve
When engine speed is below 3,200 rpm, the IAB High Control Solenoid Valve and IAB Low Control Solenoid Valve are activated by a signal from the
PCM. Intake air flows through a long chamber path, increasing torque at low RPM. When engine speed is 3,200 - 3,800 rpm, the IAB Low Control
Solenoid Valve is deactivated by the PCM. Intake air flows through a short chamber path, increasing mid-range torque.
When the engine rpm is above 3,800 rpm, the IAB Low Control Solenoid Valve and IAB High Control Solenoid Valve are deactivated by the PCM.
This creates a very short intake path and increases high-speed torque.
