TROUBLESHOOTING [ENGINE CONTROL FS]
STEP
INSPECTION
ACTION
8
CHECK FOR OPEN HEATED OXYGEN
SENSOR HEATER GROUND HARNESS
CIRCUIT
• Key off.
• Disconnect suspected sensor.
• Install breakout box. PCM disconnected.
• Use the following list to measure resistance
between appropriate Test Pins at breakout
box and heated oxygen sensor heater
ground at vehicle harness connector.
• H 02S heater (Front)=Test Pin 93
(Heater ground)
• H 02S heater (Rear)=Test Pin 95
(Heater ground)
• is resistance less than 4.0 ohms?
Yes
Open or shorted or excessive resistance in heater circuit
in PCM.
REPLACE PCM.
REMOVE breakout box.
RECONNECT all components.
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
No
SERVICE open or excessive resistance in heater circuit in
harness.
REMOVE breakout box.
RECONNECT all components.
RESET PCM to completely clear DTCs.
c
r
After Repair Procedure
COMPLETE OBD II Drive Mode.
RERUN OBD Test.
0 1 -0 1 A -3 0
Summary of Contents for MX-6 1998
Page 1: ......
Page 501: ...STARTING SYSTEM 3 If not as specified replace the starter interlock switch 01 19 3...
Page 803: ...MANUAL TRANSAXLE W 6 U 5 1 5 W A C 05 15 7...
Page 934: ...CONTROL SYSTEM CONTROL SYSTEM STRUCTURAL VIEW W6U740WA0 07 40 2...
Page 983: ...SERVICE TOOLS 08 60 SERVICE TOOLS 08 RESTRAINTS S S T 08 60 1 08 RESTRAINTS SST 08 60 1...