Secondary Shutter Valve (Ssv) Switch Construction/Operation; Auxiliary Port Valve (Apv) Position Sensor Function; Auxiliary Port Valve (Apv) Position Sensor Construction/Operation - Mazda RX-8 2004 Service Highlights

SECONDARY SHUTTER VALVE (SSV) SWITCH CONSTRUCTION/OPERATION

• The SSV switch is installed on the position close
to the SSV actuator.
• When the SSV is closed, the SSV switch contact
closes (ON) and the PCM detects a voltage of 0
V. When the SSV is open, the SSV switch contact
opens (OFF) and the PCM detects a voltage of 12
V.
PUSH ON
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AUXILIARY PORT VALVE (APV) POSITION SENSOR FUNCTION

• The APV position sensor detects the APV fully-closed position to monitor the APV motor operation condition.
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AUXILIARY PORT VALVE (APV) POSITION SENSOR CONSTRUCTION/OPERATION

• The APV position sensor is built into the APV motor.
• The Hall element, used for the sensor, detects the APV fully-closed position and sends a voltage signal to the
PCM.
• When the APV closes, the APV position sensor outputs a voltage of 1.5 V or more.
CONTROL SYSTEM
SSV SWITCH
(ILLUSTRATION SHOWS 13B-MSP (HIGH POWER))
SSV OPEN
(OFF)
SSV CLOSED
(ON)
SSV OPEN
P C M
(OFF)
SSV CLOSED
(ON)
12 V
CHU014018660S02
01–40
CHU0140S044
CPU
0 V
CHU0140S045
CHU014018990S03
CHU014018660S03
01–40–45