Mazda RX-8 Workshop Manual page 975

Open circuit
If there is no continuity, the circuit is open. Repair or replace the wiring harness.
Throttle body terminal A and PCM terminal 2A
Throttle body terminal B and PCM terminal 2B
Short circuit
If there is no continuity, the circuit is shorted. Repair or replace the wiring harness.
Throttle body terminal A and power supply
Throttle body terminal A and body GND
Throttle body terminal B and power supply
Throttle body terminal B and body GND
Throttle Valve Inspection
1. Remove the throttle body. (See
2. Open the throttle valve from the closed position to open the fully position by hand.
3. Verify that the throttle valve moves smoothly.
If cannot be verified, replace the throttle body. (See
4. Release hand from the throttle valve when at the fully open position.
5. Verify that the throttle valve returns to the closed position smoothly by spring force.
If cannot be verified, replace the throttle body. (See
6. Press the throttle valve from the closed position to the fully closed position by hand.
7. Verify that the throttle valve move approx. 5°.
INTAKE-AIR SYSTEM REMOVAL/INSTALLATION [13B-MSP].)
INTAKE-AIR SYSTEM REMOVAL/INSTALLATION
INTAKE-AIR SYSTEM REMOVAL/INSTALLATION
[13B-MSP].)
[13B-MSP].)