
Diagnostic procedure

Dtc 21
Dtc 31Mazda 6 Service Manual: Oil cooler flushing
Note
The contaminated cooler line (oil pipes and hoses) and auxiliary
cooler must be flushed completely when ATX is overhauled or replaced.
1. Remove the two oil cooler line hoses and apply air pressure of 196 kPa
{2.0 kgf/cm2, 28 psi} from the return hose (pipe) side.
Caution
Power ...
Mazda 6 Service Manual: Egr valve inspection
Operation Test
Carry out the EGR Control Inspection. (See EGR Control System
Inspection.
If not as specified, perform the further inspection for the EGR valve.
Resistance Inspection
Note
Perform the following test only when directed.
1. Disconnect the negative battery cable.
2. In ...