Checking the components and wiring
Check the resistance of the heated oxygen sensor (HO2S) between terminals #1 and #2.
Check the signal cable between heated oxygen sensor (HO2S) terminal #2 and engine control module (ECM) terminal #A8 (#A8). Check the power supply between system relay terminal #3 and heated oxygen sensor (HO2S) terminal #1. Check for an open-circuit.
Remedy as necessary.
Other information
- See Connecting the breakout box
- For information about signals on 5 cylinder engines, see Signal specification
- For information about signals for 6 cylinder engines:
- For 6 cylinder engines -2001, see Signal specification
- For 6 cylinder engines 2002-, see Signal specification
- For 6 cylinder engines -2004, see Signal specification
- For 6 cylinder engines 2005-, see Signal specification .
- For resistance values, see: Component specifications
- See Heated oxygen sensor (HO2S), replacing
- See Contents .
- Continue
Refer to Verification