Mazda Mazda6 Workshop Manual Supplement page 269

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?
2 INSPECT POOR CONNECTION OF
ACCELERATOR POSITION SENSOR NO.1
CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
3 INSPECT ACCELERATOR POSITION SENSOR
NO.1 POWER CIRCUIT FOR OPEN
• Turn engine switch to ON. (Engine OFF)
• Inspect voltage at accelerator position sensor
terminal A (harness side).
• Is voltage below 1.0 V?
4 INSPECT ACCELERATOR POSITION SENSOR
NO.1 SIGNAL CIRCUIT FOR SHORT TO GND
• Turn engine switch to OFF.
• Inspect continuity between accelerator position
sensor terminal B and body GND.
• Is there continuity?
5 INSPECT ACCELERATOR POSITION SENSOR
NO.1 CIRCUIT FOR SHORT WITH EACH OTHER
• Turn engine switch to OFF.
• Inspect continuity between accelerator position
sensor terminals B and D.
• Is there continuity?
6 INSPECT ACCELERATOR POSITION SENSOR
NO.1
• Inspect accelerator position sensor No.1.
(See F2–72 ACCELERATOR POSITION
SENSOR INSPECTION)
• Is there any malfunction?
7 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?
8 VERIFY TROUBLESHOOTING OF DTC P0122
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS or
equivalent.
• Perform KOEO/KOER self-test.
(See F2–86 KOEO/KOER SELF-TEST
PROCEDURE)
• Is same DTC present?
9 VERIFY AFTER REPAIR PROCEDURE
• Perform "After Repair Procedure".
(See F2–86 AFTER REPAIR
• Is there any DTC present?
End Of Sie
ON-BOARD DIAGNOSTIC
INSPECTION
PROCEDURE)
Yes Go to next step.
No Intermittent concern exists. Go to "Intermittent Concern
Troubleshooting".
(See F2–227 INTERMITTENT CONCERN
TROUBLESHOOTING)
Yes Repair or replace suspected terminal, go to Step 8.
No Go to next step.
Yes Repair or replace harness for open, go to Step 8.
No Go to next step.
Yes Repair or replace harness for short to GND, go to Step 8.
No Go to next step.
Yes Repair or replace harness for short with each other, go to
Step 8.
No Go to next step.
Yes Replace accelerator position sensor, go to Step 8.
(See F2–44 ACCELERATOR PEDAL COMPONENT
DISASSEMBLY/ASSEMBLY)
No Go to next step.
Yes Repair or replace suspected terminal, go to next step.
No Go to next step.
Yes Replace PCM, go to next step.
(See F2–64 PCM REMOVAL/INSTALLATION)
No Go to next step.
Yes Go to applicable DTC inspection.
(See F2–87 DTC TABLE)
No Troubleshooting completed.
ACTION
F2–117
F2