Dz4 Check The UO2S, UO2SGREF, UO2SHTR Circuits For An Open In The Harness
- Key in OFF position.
- Measure the resistance between:
( + ) Universal HO2S Connector, Harness Side ( - ) PCM Connector, Harness Side UO2S - Pin 6 UO2S - Pin E38 UO2SGREF - Pin 2 UO2SGREF - Pin E26 UO2SHTR - Pin 3 UO2SHTR - Pin E52 - Are the resistances less than 5 ohms?
- Yes:
INSTALL a new Universal HO2S. REFER to the ELECTRONIC ENGINE CONTROLS
.
RESET the keep alive memory (KAM). REFER to RESETTING THE KEEP ALIVE MEMORY (KAM) .
REPEAT the self-test.
- No: REPAIR the open circuit. CLEAR the DTCs. REPEAT the self-test.
- Yes:
INSTALL a new Universal HO2S. REFER to the ELECTRONIC ENGINE CONTROLS
.