Dtc P0123 - Mazda Mazda6 Workshop Manual Supplement

DTC P0123

DTC P0123 Accelerator position sensor No.1 circuit high input
• PCM monitors input voltage from accelerator position sensor No.1 while engine is running. If input voltage
DETECTION
from accelerator position sensor No.1 is above 4.7 V, PCM determines accelerator position sensor No.1
CONDITION
circuit high input.
• Accelerator position sensor No.1 malfunction
• Connector or terminal malfunction
• Accelerator position sensor No.1 power and signal circuits short each other
POSSIBLE
• Open circuit in wiring between accelerator position sensor terminal B and PCM terminal 10
CAUSE
• Open circuit in wiring between accelerator position sensor terminal D and PCM terminal 91
• PCM malfunction
ACCELERATOR POSITION SENSOR NO.1
ACCELERATOR POSITION SENSOR
HARNESS SIDE CONNECTOR
Diagnostic procedure
STEP
1 PERFORM DTC CONFIRMATION PROCEDURE
• Perform "DTC Confirmation Procedure".
(See F2–85 DTC CONFIRMATION
PROCEDURE)
• Is same DTC present during KOEO or KOER
self-test?
F2–118
ON-BOARD DIAGNOSTIC
A
4
B
D
D C
B
A
INSPECTION
3
5
90
5
6
3
10
6 5
91
HARNESS SIDE CONNECTOR
Yes Go to next step.
No Intermittent concern exists. Go to "Intermittent Concern
Troubleshooting".
(See F2–227 INTERMITTENT CONCERN
TROUBLESHOOTING)
PCM
PCM
91 90 10
ACTION
A6E407001082218