Dtc P0850 - Mazda 6 Workshop Manual

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DTC P0850

DTC P0850 Neutral switch circuit malfunction
• The PCM monitors the input signal from the neutral switch when shifting. If the neutral switch signal is not
input even once even when vehicle speed is more than 10 km/h {6.2 mph} the shift lever is operated
more than five times, the PCM determines that there is a malfunction in the neutral switch circuit.
Diagnostic support note
DETECTION
• The MIL illuminates if the PCM detects the above malfunction condition in two consecutive drive cycles or
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.
• FREEZE FRAME DATA is available.
• The DTC is stored in the PCM memory.
• Neutral switch malfunction
• Connector or terminal malfunction
• Short to GND in wiring harness between neutral switch terminal A and PCM terminal 56
POSSIBLE
• Open circuit in wiring harness between neutral switch terminal B and GND
CAUSE
• Open circuit in wiring harness between neutral switch terminal A and PCM terminal 56
• PCM malfunction
NEUTRAL SWITCH
7
NEUTRAL SWITCH
WIRING HARNESS-SIDE
CONNECTOR
B A
F2–164
ON-BOARD DIAGNOSTIC
4 5 9
A
4 6
B
26 25 24 23 22 21 20 19
52 51 50 49 48 47 46
78 77 76 75 74 73 72 71
104 103 102 101 100 99 98
PCM
8
56
PCM
WIRING HARNESS-SIDE
CONNECTOR
18 17 16 15 14 13 12 11
45 44 43 42 41 40 39 38
70 69 68 67 66 65 64 63
97 96 95 94 93 92 91 90
B6E407000800101
10 9 8 7 6 5 4 3 2
37 36 35 34 33 32 31 30 29 28
62 61 60 59 58 57 56 55 54
89 88 87 86 85 84 83 82 81 80
1
27
53
79