1. Disconnect the negative battery cable.
2. Remove the radiator grille. (See RADIATOR GRILLE REMOVAL/INSTALLATION.)
3. Remove in the order indicated in the table.


4. Install in the reverse order of removal.
Solar radiation sensor inspection
Ambient temperature sensor inspectionMazda 6 Service Manual: Dtc c1955, c1956
Caution
When attaching the tester lead to the DSC HU/CM connector the SST
(49 G066 004) must be used.
Diagnostic procedure
...
Mazda 6 Service Manual: Theft-deterrent control module inspection
1. Remove the theft-deterrent control module without disconnecting the
connectors.
2. Measure the voltage at the theft-deterrent control module terminals as
indicated below.
3. Disconnect the theft-deterrent control module connector before inspecting
for continuity at terminals L, Q, S, T, a ...