Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the spiritual successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la or
lemon-manuals.org.ua
(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)
Or, hide this message:
temporarily or
permanently
Heated Oxygen Sensor Heater On-Vehicle Inspection
1.
Disconnect HO2S-1 or-2 coupler.
2.
Using ohmmeter, measure resistance between terminals "VB" and "GND" of HO2S coupler (1).
If found faulty, replace HO2S.
NOTE: Temperature of HO2S affects resistance value largely. Make sure that HO2S heater is at correct temperature.
3.
Connect HO2S coupler securely.
