Dtc P0103 - Mazda 6 Workshop Manual

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

DTC P0103

DTC P0103 Mass air flow (MAF) sensor circuit high input
• The PCM monitors the input signal from the air flow sensor. If the voltage from the air flow sensor is more
than 4.9 V, the PCM determines that there is a malfunction in the intake air temperature sensor No. 2
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.
• MAF sensor malfunction
• Connector or terminal malfunction
POSSIBLE
• Short to power supply in wiring harness between MAF/IAT sensor terminal C and PCM terminal 9
CAUSE
• Open circuit in wiring harness between MAF/IAT sensor terminal B and PCM terminal 14
• PCM malfunction
PCM CONTROL
RELAY WIRING
MAF/IAT SENSOR
HARNESS-SIDE
WIRING HARNESS-SIDE
CONNECTOR
A E
C E
D
F2–58
ON-BOARD DIAGNOSTIC
INSPECTION
MODE.)
MAF SENSOR
(MAF/IAT SENSOR)
A
6
C
B
CONNECTOR
26 25
52
D C B A
78 77
104 103
Yes Go to the applicable DTC inspection.
(See F2–40 DTC
No DTC troubleshooting completed.
PCM CONTROL
RELAY
TERMINAL C
4
4 5
4 8
WIRING HARNESS-SIDE
24 23 22 21 20 19 18 17 16
51 50 49 48 47 46 45 44 43 42
76 75 74 73 72 71 70 69 68
102 101 100 99 98 97 96 95 94 93
ACTION
TABLE.)
PCM
9
14
PCM
CONNECTOR
15 14 13 12 11 10 9 8
41 40 39 38 37 36 35 34
67 66 65 64 63 62 61 60
92 91 90 89 88 87 86
B6E407000100103
7 6 5 4 3 2 1
33 32 31 30 29 28 27
59 58 57 56 55 54 53
85 84 83 82 81 80 79