October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Current Pump Circuit Inspection

IG "OFF" & Disconnect HO2S (S1) connector.
IG "ON" & ENG "OFF".
Measure the voltage between Current Pump terminal of HO2S (S1) harness connector and chassis ground.
Specification: Approx 2~3V
Is the measured voltage within specification?
YES
- Go to "COMPONENT INSPECTION " procedure.
NO
- Repair or replace as necessary and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.