Mazda Mazda6 - Dtc P0122

F2–116
ON-BOARD DIAGNOSTIC
End Of Sie
DTC P0122
A6E407001082217
5 INSPECT POOR CONNECTION OF PCM
CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
Yes Repair or replace suspected terminal, go to next step.
No Go to next step.
6 VERIFY TROUBLESHOOTING OF DTC P0121
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS or
equivalent.
• Start engine.
• Is same DTC present?
Yes Replace PCM, go to next step.
(See F2–64 PCM REMOVAL/INSTALLATION)
No Go to next step.
7 VERIFY AFTER REPAIR PROCEDURE
• Perform “After Repair Procedure”.
(See F2–86 AFTER REPAIR PROCEDURE)
• Is there any DTC present?
Yes Go to applicable DTC inspection.
(See F2–87 DTC TABLE)
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC P0122 Accelerator position sensor No.1 circuit low input
DETECTION
CONDITION
• PCM monitors input voltage from accelerator position sensor No.1 while engine is running. If input voltage
from accelerator position sensor No.1 is below 0.3 V, PCM determines accelerator position sensor No.1
circuit low input.
POSSIBLE
CAUSE
• Accelerator position sensor No.1 malfunction
• Connector or terminal malfunction
• Open circuit in wiring between accelerator position sensor terminal A and PCM terminal 90
• Short to GND in wiring between accelerator position sensor terminal B and PCM terminal 10
• Accelerator position sensor No.1 signal and GND circuits short each other
• PCM malfunction
ACCELERATOR POSITION SENSOR NO.1
A
B
D
90
10
91
PCM
D
C
B
A
91
90
10
7
5
4
3
6
2
2
2
5
7
7
ACCELERATOR POSITION SENSOR
HARNESS SIDE CONNECTOR
PCM
HARNESS SIDE CONNECTOR