Mazda 6 2002 - Dtc P0850

F160
ON-BOARD DIAGNOSTIC
End Of Sie
DTC P0850
A6E397001089W03
13 INSPECT CLUTCH SWITCH SIGNAL CIRCUIT
FOR SHORT TO GROUND
• Inspect continuity between clutch switch
terminal B and ground.
• Is there any continuity?
Yes Repair or replace harness for short to ground, then go to
Step 14.
No Go to Next step.
14 VERIFY TROUBLESHOOTING OF DTC P0704
COMPLETED
• Make sure to reconnect all disconnected
connectors.
• Start engine.
• Clear DTC from PCM memory using WDS or
equivalent.
• Operate clurch pedal during drive vehicle
below 30 km/h {19 mph} 8 times altemetely.
• Is same DTC present?
Yes Replace PCM, then go to next step.
(See F43 PCM REMOVAL/INSTALLATION.)
No Go to next step.
15 VERIFY AFTER REPAIR PROCEDURE
• Perform After Repair Procedure.
(See F66 AFTER REPAIR PROCEDURE.)
• Is there any DTC present?
Yes Go to applicable DTC troubleshooting.
(See F67 DTC TABLE.)
No Troubleshooting completed.
STEP INSPECTION ACTION
DTC P0850 Neutral switch circuit malfunction
DETECTION
CONDITION
• PCM monitors changes in input voltage from neutral switch. If PCM does not detect PCM terminal 1W
voltage changes while running vehicle with vehicle speed above 30 km/h {19 mph} and clutch pedal turns
press and depress 10 times repeatedly, PCM determines that neutral switch circuit has malfunction
Diagnostic support note
• This is a continuous monitor (CCM).
• MIL illuminates if PCM detects the above malfunction condition in two consecutive drive cycles or in one
drive cycle while the DTC for the same malfunction has been stored in the PCM.
• PENDING CODE is available if PCM detects the above malfunction condition during first drive cycle.
• FREEZE FRAME DATA is available.
• DTC is stored in PCM memory.
POSSIBLE
CAUSE
• Neutral switch malfunction
• Poor connection of neutral switch connector or PCM connector.
• Short to ground between neutral switch terminal B and PCM connector terminal 1W.
• Open harness between neutral switch terminal B and PCM connector terminal 1W.
• Open harness between ground and brake switch terminal A.
• PCM malfunction