Mazda RX-8 Workshop Manual page 4138

3 Using the SST (Fuel and thermometer checker) or resistor, input 80 ohms between instrument
cluster terminals 2T and 2R, and 2T and 2P.
4 Using the SST (Fuel and thermometer checker) or resistor, input 160 ohms between instrument
cluster terminals 2T and 2R, and 2T and 2P.
5 Using the SST (Fuel and thermometer checker) or resistor, input 240 ohms between instrument
cluster terminals 2T and 2R, and 2T and 2P.
Check code 23
Check code 23
INSPECTION CONDITION
After selecting check code 23, wait
approx. 2 s.
Fuel gauge operation signal
DISPLAY
The fuel gauge indicates status in the following order
approx. every 2 s.
F → 1/2 → E → F (fixed)
Except above
Replace the instrument cluster.
Except above Replace the
instrument cluster.
Go to the next step.
Except above Replace the
instrument cluster.
Go to the next step.
Except above Replace the
instrument cluster.
Inspect the fuel
gauge sender unit.
Except above Replace the
instrument cluster.
ACTION
The fuel gauge is
normal.
Replace the instrument
cluster.