Mazda MX-6 1998, Руководство по ремонту

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TROUBLESHOOTING [ENGINE CONTROL KL]
STEP INSPECTION
ACTION
3 CHECK CONTINUITY OF PURGE
SOLENOID VALVE SIGNAL CIRCUIT
• Key off.
• Purge solenoid valve disconnected.
• Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires,
etc. Service as necessary.
• Install breakout box. Leave PCM
disconnected.
• Measure resistance between Test Pin 67 at
breakout box and purge solenoid valve
signal circuit at solenoid vehicle harness
connector.
• Is resistance less than 5.0 ohms?
Yes Go to next step.
No SERVICE open in harness circuit.
REMOVE breakout box.
RECONNECT all components.
VERIFY symptom no longer exists.
RESET PCM to completely clear DTCs.
rr After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
4 CHECK PURGE SOLENOID VALVE SIGNAL
CIRCUIT FOR SHORT GROUND CIRCUIT
• Key off.
• Purge solenoid valve disconnected.
• Breakout box installed.
• Disconnect NGS tester from DLC.
• Measure resistance between Test Pin 67
and Test Pins 24 and 103 at breakout box.
• Is each resistance greater than 10,000
ohms?
Yes
Go to next step.
No SERVICE harness short circuit.
REMOVE breakout box.
RECONNECT all components.
VERIFY symptom no longer exists.
RESET PCM to completely clear DTCs.
tr After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
5 COMPLETED KEY ON ENGINE OFF (KOEO)
AND KEY ON ENGINE RUNNING (KOER)
SELF TEST
• Was DTC P0443 generated in either
KOEO or KOER self test?
Yes RETURN to step 1 and address cause of DTC.
No Go to next step.
6 CHECK FOR INTERMITTENT FAULT IN
HARNESS AND CONNECTOR
• Key off.
• Disconnect PCM. Inspect for damaged or
pushed out pins, corrosion, loose wires,
etc.
• Install breakout box.
• Connect DVOM to Test Pin 67 and Test Pin
71 at breakout box.
• Key on, engine off.
• Observe DVOM display for an indication of
fault (changing voltage) while performing
following:
• Lightly tap on purge solenoid valve.
• Wiggle purge solenoid valve connector.
• Grasp purge solenoid valve vehicle har­
ness connector and wiggle wires
between solenoid and PCM.
• Is fault detected?
Yes ISOLATE fault and SERVICE as necessary.
REMOVE breakout box.
RECONNECT all components.
RERUN OBD Test.
No Unable to duplicate and/or identify fault at this time.
Intermittent poor connection or component malfunction
(Repair as necessary.).
Go to ENGINE SYMPTOM TROUBLESHOOTING No.27.
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