#1 : Diagnostic trouble codes depend on the diagnostic test mode
#2 : Controlled by the PCM
#3 : In some models, there is a fuel pump relay that controls pump speed. That relay is now called the fuel pump relay (speed).
#4 : Device that controls engine and powertrain
#5 : Directly connected to exhaust manifold
#6 : Part name of diesel engine
Mazda 6 Service Manual: Radiator cap
Warning
Never remove the radiator cap while the engine is running, or when
the engine and radiator are hot. Scalding coolant and steam may shoot out
and cause serious injury. It may also damage the engine and cooling system.
Turn off the engine and wait until it is cool. Even then, be ve ...
Mazda 6 Service Manual: Three-way catalytic converter (twc) inspection
Note
Make sure that no HO2S DTCs have been detected. If detected, this
inspection is not applicable for TWC inspection.
1. Connect the WDS or equivalent and monitor PIDs as following.
Monitor the right TWC using O2S11 PID for upstream HO2S and O2S12 PID
for downstream HO2S.
2. Be ...