Dtc P0116 - Mazda 6 Workshop Manual

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DTC P0116

DTC P0116 Engine coolant temperature (ECT) sensor range/performance problem
• The PCM monitors the input signal from the engine coolant temperature sensor. If the difference between
the maximum and the minimum value of the ECT is less than 3 ° ° ° ° C {5.4 ° ° ° ° F}, the PCM determines that there
is a malfunction in the engine coolant temperature sensor characteristic.
Diagnostic support note
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or
DETECTION
CONDITION
in one drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if the PCM detects the above malfunction condition during the first drive
cycle.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
• ECT sensor malfunction
POSSIBLE
• Connector or terminal malfunction
CAUSE
• PCM malfunction
ECT SENSOR
WIRING HARNESS-SIDE
CONNECTOR
B A
F2–72
ON-BOARD DIAGNOSTIC
ECT SENSOR
4
A
5
4
B
26 25 24 23
52 51 50
78 77 76 75
104 103 102 101
6
87
6
91
WIRING HARNESS-SIDE
CONNECTOR
22 21 20 19 18 17 16 15 14
49 48 47 46 45 44 43 42 41 40
74 73 72 71 70 69 68 67 66
100 99 98 97 96 95 94 93 92
PCM
PCM
13 12 11 10 9 8 7
39 38 37 36 35 34 33
65 64 63 62 61 60 59 58
91 90 89 88 87 86 85
B6E407000100110
6 5 4 3 2 1
32 31 30 29 28 27
57 56 55 54 53
84 83 82 81 80 79