Mazda 6 - Dtc P0117

F2–74
ON-BOARD DIAGNOSTIC
DTC P0117
B6E407000100111
DTC P0117 Engine coolant temperature (ECT) sensor circuit low input
DETECTION
CONDITION
• The PCM monitors the input signal from the engine coolant temperature sensor. If the voltage from the
engine coolant temperature sensor is less than 0.14 V, the PCM determines that there is a malfunction in
the engine coolant temperature sensor circuit.
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition in the first drive cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
POSSIBLE
CAUSE
• ECT sensor malfunction
• Connector or terminal malfunction
• Short to GND in wiring harness between ECT sensor terminal A and PCM terminal 87
• PCM malfunction
87
91
A
B
4
4
5
6
7
7
ECT SENSOR PCM
ECT SENSOR
WIRING HARNESS-SIDE
CONNECTOR
PCM
WIRING HARNESS-SIDE
CONNECTOR
AB
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