

Diagnostic procedure


Dtc p0340
Dtc p0420Mazda 6 Service Manual: Lcd unit removal/installation
1. Disconnect the negative battery cable.
2. Remove the center panel module. (See CENTER PANEL MODULE
REMOVAL/INSTALLATION.)
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
LCD Unit Removal Note
1. Pull up the front part of the LCD unit.
2. Wh ...
Mazda 6 Service Manual: Engine Coolant Temperature Gauge
Displays the engine coolant temperature. The blue gauge indicates that the engine
coolant temperature is low, and the red gauge indicates that the engine coolant
temperature is high and overheating.
CAUTION
If the high engine coolant temperature warning light (red) turns on, there
is a pos ...