Mazda Mazda6 Workshop Manual Supplement page 313

STEP
3 INSPECT NEUTRAL SWITCH FOR CLOSE
STUCK
• Turn engine switch to ON (Engine OFF).
• Disconnect neutral switch connector.
• Access CPP/PNP PID using WDS or
equivalent.
• Is CPP/PNP PID OFF?
4 INSPECT NEUTRAL SWITCH SIGNAL CIRCUIT
FOR SHORT TO GND
• Turn engine switch to OFF.
• Inspect continuity between neutral switch
terminal A and body GND.
• Is there continuity?
5 INSPECT POOR CONNECTION OF NEUTRAL
SWITCH CONNECTOR
• Turn engine switch to OFF.
• Inspect for poor connection (damaged, pulled-
out terminals, corrosion, etc.).
• Is there any malfunction?
6 INSPECT NEUTRAL SWITCH FOR OPEN
STUCK
• Turn engine switch to ON (Engine OFF).
• Disconnect neutral switch connector.
• Connect jumper wire between neutral switch
connector terminals.
• Access CPP/PNP PID using WDS or
equivalent.
• Is CPP/PNP PID ON?
7 INSPECT NEUTRAL SWITCH GND CIRCUIT
FOR OPEN
• Turn engine switch to OFF.
• Inspect continuity between neutral switch
terminal B and body GND.
• Is there continuity?
8 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?
9 INSPECT NEUTRAL SWITCH SIGNAL CIRCUIT
FOR OPEN
• Turn engine switch to OFF.
• Inspect continuity between neutral switch
terminal A and PCM terminal 56.
• Is there continuity?
10 VERIFY TROUBLESHOOTING OF DTC P0850
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Clear DTC from PCM memory using WDS or
equivalent.
• Start engine.
• Is same DTC present?
11 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 Replace neutral switch, go to Step 10.
No Go to next step.
Yes Repair or replace harness for short to GND, go to Step 10.
No Go to next step.
Yes Repair or replace suspected terminal, go to Step 10.
No Go to next step.
Yes Replace neutral switch, go to Step 10.
No Go to next step.
Yes Go to next step.
No Repair or replace harness for open, go to Step 10.
Yes Repair or replace suspected terminal, go to Step 10.
No Go to next step.
Yes Go to next step.
No Repair or replace harness for open, 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
F2–161
F2