
Diagnostic procedure

Dtc 09:er20
Dtc 03:er10Mazda 6 Service Manual: Engine coolant temperature (ect) sensor inspection
Note
Perform the following inspection only when directed.
ECT Sensor Resistance Inspection
1. Drain the engine coolant. (See COOLING SYSTEM SERVICE WARNINGS.)
2. Remove the ECT sensor (located above the starter).
3. Place the ECT sensor in water with a thermometer, and heat the water
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Mazda 6 Service Manual: Schedule 2
Chart symbols:
I
: Inspect: Inspect and clean, repair, adjust, fill up, or replace if necessary.
R
: Replace
L
: Lubricate
C
: Clean
T
: Tighten
Remarks:
*1 Use of FL-22 is recommended when replacing engine coolant. Using engine coolant other than FL ...