Dtc P0628 - Mazda 6 Workshop Manual

DTC P0628

DTC P0628 Suction control valve circuit low input
• The PCM monitors the suction control valve circuit current while the engine is running. If the PCM detects
the circuit current is less than 1 A when the suction control valve is on, the PCM determines that there is a
malfunction in the suction control valve 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.
• Suction control valve malfunction
• Connector or terminal malfunction
• Short to GND in wiring harness between suction control valve terminal A and PCM terminal 93
POSSIBLE
• Short to GND in wiring harness between suction control valve terminal B and PCM terminal 94
CAUSE
• Open circuit in wiring harness between suction control valve terminal A and PCM terminal 93
• Open circuit in wiring harness between suction control valve terminal B and PCM terminal 94
• PCM malfunction
SUCTION CONTROL VALVE
6
SUCTION CONTROL VALVE
WIRING HARNESS-SIDE CONNECTOR
B A
F2–150
ON-BOARD DIAGNOSTIC
4
5 8
A
4
5 8
B
26 25 24 23
52 51 50
78 77 76 75
104 103 102
PCM
7
93
7
94
WIRING HARNESS-SIDE CONNECTOR
22 21 20 19 18 17 16 15 14
49 48 47 46 45 44 43 42 41
74 73 72 71 70 69 68 67 66
101 100 99 98 97 96 95 94 93
PCM
13 12 11 10 9 8 7
40
39 38 37 36 35 34 33
65 64 63 62 61 60 59
92 91 90 89 88 87 86 85
B6E407000600105
6 5 4 3 2
1
32 31 30 29 28 27
58 57 56 55 54 53
84 83 82 81 80 79