Dtc P0108 - Mazda 6 Workshop Manual

DTC P0108

DTC P0108 Boost sensor circuit high input
• The PCM monitors the input signal from the manifold absolute pressure sensor. If the voltage from the
manifold absolute pressure sensor is more than 4.8 V, the PCM determines that there is a malfunction in
the manifold absolute pressure sensor circuit.
DETECTION
Diagnostic support note
CONDITION
• 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.
• Boost sensor malfunction
• Connector or terminal malfunction
• Short to power supply in wiring harness between boost sensor terminal B and PCM terminal 36
POSSIBLE
• Short to power supply in wiring harness between boost sensor terminal C and PCM terminal 90
CAUSE
• Open circuit in wiring harness between boost sensor terminal A and PCM terminal 91
• PCM malfunction
6
BOOST SENSOR
WIRING HARNESS-SIDE
CONNECTOR
C B A
F2–64
ON-BOARD DIAGNOSTIC
BOOST SENSOR
4
C
4
B
4
A
26 25 24 23
52 51 50
78 77 76 75
104 103 102
7
90
5
7
36
7
8
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
101 100 99 98 97 96 95 94 93 92
PCM
PCM
13 12 11 10 9 8 7 6
39 38 37 36 35 34 33 32
65 64 63 62 61 60 59 58
91 90 89 88 87 86 85 84
B6E407000100106
5 4 3 2 1
31 30 29 28 27
57 56 55 54 53
83 82 81 80 79