TROUBLESHOOTING [ENGINE CONTROL FS]
STEP
INSPECTION
ACTION
4
CHECK FOR UNMETERED AIR LEAKS
Fuel calculations can be affected by
unmetered air leaks.
•
Carefully inspect the following areas for
potential air leaks.
•
Hoses connecting to MAF sensor
•
Hoses connecting to throttle body
•
Intake manifold gasket leaks
•
Positive crankcase ventilation (PCV)
disconnected
•
Vacuum lines disconnected
•
Improperly seated engine oil dipstick
and tube
•
Exhaust leaks at flanges and gaskets
• Are there any air leaks?
Yes
Air leaks located.
SERVICE source of air leak.
RESET PCM to completely clear DTCs.
tr
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
No
Go to next step.
5
CHECK OF HEATED OXYGEN SENSOR
CIRCUIT WIRING WITH PCM CONNECTED
•
Key off.
•
PCM connected.
•
Disconnect suspected heated oxygen
sensor.
•
Jumper heated oxygen sensor signal circuit
to power circuit at heated oxygen sensor
harness connector.
•
NGS tester connected.
•
Key on, engine off.
•
Access correct heated oxygen sensor PID.
•
02S11
Note
•
Heated oxygen sensor displayed as 02S11
(Front), 0 2 S 1 2 (REAR) on NGS tester.
• Is voltage greater than 1.50 volts?
Yes
Heated oxygen sensor signal circuit is not faulty.
REPLACE heated oxygen sensor.
CHANGE oil/filter.
RESET PCM to completely clear DTCs.
tr
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
No
Go to next step.
6
CHECK RESISTANCE OF HEATED OXYGEN
SENSOR SIGNAL CIRCUIT
• Key off.
• Disconnect NGS tester.
• Disconnect PCM. Inspect both end of
connect for bent or pushed out pins,
corrosion or other damage. Service as
necessary.
• Install breakout box. Leave PCM
disconnected.
• Measure resistance between heated
oxygen sensor signal Test Pin at breakout
box and heated oxygen sensor harness
connector.
• H 02S Front=Test Pin 60
• Measure resistance between following Test
Pin at breakout box and heated oxygen
sensor harness connector.
• Ground=Test Pin 91
•
Is resistance less than 5.0 ohms?
Yes
Go to next step.
No
Resistance is high.
SERVICE open circuit.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
tr
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
7
CHECK FOR SHORT IN HEATED OXYGEN
SENSOR CIRCUIT
• Key off.
• Breakout box installed. PCM disconnected.
• Measure resistance between heated
oxygen sensor signal Test Pin at breakout
box and power circuit and heated oxygen
sensor signal Test Pin and ground circuit at
breakout box.
• H 02S (Front)=Test Pin 60
• Power circuit=Test Pin 71/97
• Ground=Test Pin 91
•
Is resistance greater than 10,000 ohms?
Yes
REPLACE PCM.
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
No
SERVICE short circuit.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
tr
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
0 1 -0 1 A -2 7
Содержание MX-6 1998
Страница 1: ......
Страница 501: ...STARTING SYSTEM 3 If not as specified replace the starter interlock switch 01 19 3...
Страница 803: ...MANUAL TRANSAXLE W 6 U 5 1 5 W A C 05 15 7...
Страница 934: ...CONTROL SYSTEM CONTROL SYSTEM STRUCTURAL VIEW W6U740WA0 07 40 2...
Страница 983: ...SERVICE TOOLS 08 60 SERVICE TOOLS 08 RESTRAINTS S S T 08 60 1 08 RESTRAINTS SST 08 60 1...
Страница 1005: ...TROUBLESHOOTING POWER DOOR LOCK SYSTEM From previous page Go to next page W 6 U 9 0 1 W H 3 09 01E 7...
Страница 1168: ...SEATS 4A 4 If not as specified replace the power seat switch 2A 2B t 4B 3A 1C 1A 1F W6U913WA9 09 13 7...