Dtc P0193 - Mazda 6 Workshop Manual

STEP
12 VERIFY AFTER REPAIR PROCEDURE
• Perform the Repair Verification Drive Mode.
(See F2–39 OBD DRIVE
• Are any DTCs present?
End Of Sie

DTC P0193

DTC P0193 Fuel pressure sensor circuit high input
• The PCM monitors the input voltage from the fuel pressure sensor while the engine is running. If the input
voltage from the fuel pressure sensor is more than 4.86 V, the PCM determines that there is a malfunction
in the fuel 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.
• Fuel pressure sensor malfunction
• Connector or terminal malfunction
• Fuel pressure sensor power and signal circuits are shorted to each other.
POSSIBLE
• Short to power supply in wiring between fuel pressure sensor terminal B and PCM terminal 61
CAUSE
• Open circuit in wiring between fuel pressure sensor terminal A and PCM terminal 91
• PCM malfunction
FUEL PRESSURE SENSOR
FUEL PRESSURE SENSOR
WIRING HARNESS-SIDE
CONNECTOR
C B A
F2–90
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
4
C
4
6 B
4
A
26 25 24 23 22
52 51 50 49 48
78 77 76 75 74
104 103 102 101 100
Yes Go to the applicable DTC inspection.
(See F2–40 DTC
No Troubleshooting completed.
7
90
7
5
61
7
8
91
PCM
WIRING HARNESS-SIDE CONNECTOR
21 20 19 18 17 16 15 14
47 46 45 44 43 42 41 40
73 72 71 70 69 68 67 66
99 98 97 96 95 94 93 92
ACTION
TABLE.)
PCM
13 12 11 10 9 8 7 6 5
39 38 37 36 35 34 33 32 31
65 64 63 62 61 60 59 58 57 56
91 90 89 88 87 86 85 84 83
B6E407000100119
4 3 2 1
30 29 28 27
55 54 53
82 81 80 79