
Diagnostic procedure

Dtc b1231
Dtc b1869, b1870Mazda 6 Service Manual: Variable intake-air system (vis) control solenoid valve inspection (l3)
1. Remove the VIS control solenoid valve. (See INTAKE-AIR SYSTEM
REMOVAL/INSTALLATION.)
2. Inspect airflow between the ports under the following conditions.
If not as specified, replace the VIS control solenoid valve.
If as specified, carry out the Circuit Open/Short Inspection.
Circ ...
Mazda 6 Service Manual: Torque formulas
When using a torque wrench-SST or equivalent combination, the
written torque must be recalculated due to the extra length that the SST
or equivalent adds to the torque wrench.
Recalculate the torque using the following formulas. Choose the formula that
applies to you.
A : The leng ...