Condition for fault identification

Test condition:

Engine running

Battery voltage: 10.7 V to 16 V

No deactivation of voltage to pre-catalyst oxygen sensor

Potential problem source(s):

• Defective wiring harness
• Oxygen sensor before catalytic converter defective
• Defective DME

Terminal condition: none

Voltage condition:

• Onboard electrical system voltage between 9 V and 16 V

Temperature condition:

• Engine warmed to normal temp, above 80 °C

Time condition:

• None

Other conditions:

• Engine ON