
Diagnostic procedure

Dtc p0117
Dtc p0121Mazda 6 Service Manual: Engine control system operation inspection
Main Relay Operation Inspection
Verify that the main relay clicks when the ignition switch is turned to ON
position and off.
If there is no operation sound, inspect the following.
- Main relay (See RELAY INSPECTION.)
- Harness and connector between ignition switch and main relay termi ...
Mazda 6 Service Manual: Noise filter inspection
Brake Light Noise Filter
1. Inspect for resistance and continuity between the noise filter terminals
using an ohmmeter.
If not as specified, replace the noise filter.
Rear Window Defroster Noise Filter
Inspect for resistance and continuity between the noise filter terminals
using an ...